Installing on GCP

OpenShift Container Platform 4.6

Installing OpenShift Container Platform GCP clusters

Red Hat OpenShift Documentation Team

Abstract

This document provides instructions for installing and uninstalling OpenShift Container Platform clusters on Google Cloud Platform.

Chapter 1. Installing on GCP

1.1. Configuring a GCP project

Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.

1.1.1. Creating a GCP project

To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster.

Procedure

1.1.2. Enabling API services in GCP

Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation.

Prerequisites

  • You created a project to host your cluster.

Procedure

  • Enable the following required API services in the project that hosts your cluster. See Enabling services in the GCP documentation.

    Table 1.1. Required API services

    API serviceConsole service name

    Compute Engine API

    compute.googleapis.com

    Google Cloud APIs

    cloudapis.googleapis.com

    Cloud Resource Manager API

    cloudresourcemanager.googleapis.com

    Google DNS API

    dns.googleapis.com

    IAM Service Account Credentials API

    iamcredentials.googleapis.com

    Identity and Access Management (IAM) API

    iam.googleapis.com

    Service Management API

    servicemanagement.googleapis.com

    Service Usage API

    serviceusage.googleapis.com

    Google Cloud Storage JSON API

    storage-api.googleapis.com

    Cloud Storage

    storage-component.googleapis.com

1.1.3. Configuring DNS for GCP

To install OpenShift Container Platform, the Google Cloud Platform (GCP) account you use must have a dedicated public hosted zone in the same project that you host the OpenShift Container Platform cluster. This zone must be authoritative for the domain. The DNS service provides cluster DNS resolution and name lookup for external connections to the cluster.

Procedure

  1. Identify your domain, or subdomain, and registrar. You can transfer an existing domain and registrar or obtain a new one through GCP or another source.

    Note

    If you purchase a new domain, it can take time for the relevant DNS changes to propagate. For more information about purchasing domains through Google, see Google Domains.

  2. Create a public hosted zone for your domain or subdomain in your GCP project. See Creating public zones in the GCP documentation.

    Use an appropriate root domain, such as openshiftcorp.com, or subdomain, such as clusters.openshiftcorp.com.

  3. Extract the new authoritative name servers from the hosted zone records. See Look up your Cloud DNS name servers in the GCP documentation.

    You typically have four name servers.

  4. Update the registrar records for the name servers that your domain uses. For example, if you registered your domain to Google Domains, see the following topic in the Google Domains Help: How to switch to custom name servers.
  5. If you migrated your root domain to Google Cloud DNS, migrate your DNS records. See Migrating to Cloud DNS in the GCP documentation.
  6. If you use a subdomain, follow your company’s procedures to add its delegation records to the parent domain. This process might include a request to your company’s IT department or the division that controls the root domain and DNS services for your company.

1.1.4. GCP account limits

The OpenShift Container Platform cluster uses a number of Google Cloud Platform (GCP) components, but the default Quotas do not affect your ability to install a default OpenShift Container Platform cluster.

A default cluster, which contains three compute and three control plane machines, uses the following resources. Note that some resources are required only during the bootstrap process and are removed after the cluster deploys.

Table 1.2. GCP resources used in a default cluster

ServiceComponentLocationTotal resources requiredResources removed after bootstrap

Service account

IAM

Global

5

0

Firewall Rules

Compute

Global

11

1

Forwarding Rules

Compute

Global

2

0

In-use global IP addresses

Compute

Global

4

1

Health checks

Compute

Global

3

0

Images

Compute

Global

1

0

Networks

Compute

Global

2

0

Static IP addresses

Compute

Region

4

1

Routers

Compute

Global

1

0

Routes

Compute

Global

2

0

Subnetworks

Compute

Global

2

0

Target Pools

Compute

Global

3

0

CPUs

Compute

Region

28

4

Persistent Disk SSD (GB)

Compute

Region

896

128

Note

If any of the quotas are insufficient during installation, the installation program displays an error that states both which quota was exceeded and the region.

Be sure to consider your actual cluster size, planned cluster growth, and any usage from other clusters that are associated with your account. The CPU, Static IP addresses, and Persistent Disk SSD (Storage) quotas are the ones that are most likely to be insufficient.

If you plan to deploy your cluster in one of the following regions, you will exceed the maximum storage quota and are likely to exceed the CPU quota limit:

  • asia-east2
  • asia-northeast2
  • asia-south1
  • australia-southeast1
  • europe-north1
  • europe-west2
  • europe-west3
  • europe-west6
  • northamerica-northeast1
  • southamerica-east1
  • us-west2

You can increase resource quotas from the GCP console, but you might need to file a support ticket. Be sure to plan your cluster size early so that you can allow time to resolve the support ticket before you install your OpenShift Container Platform cluster.

1.1.5. Creating a service account in GCP

OpenShift Container Platform requires a Google Cloud Platform (GCP) service account that provides authentication and authorization to access data in the Google APIs. If you do not have an existing IAM service account that contains the required roles in your project, you must create one.

Prerequisites

  • You created a project to host your cluster.

Procedure

  1. Create a service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation.
  2. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources.

    Note

    While making the service account an Owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable.

  3. Create the service account key in JSON format. See Creating service account keys in the GCP documentation.

    The service account key is required to create a cluster.

1.1.5.1. Required GCP permissions

When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. To deploy an OpenShift Container Platform cluster, the service account requires the following permissions. If you deploy your cluster into an existing VPC, the service account does not require certain networking permissions, which are noted in the following lists:

Required roles for the installation program

  • Compute Admin
  • Security Admin
  • Service Account Admin
  • Service Account User
  • Storage Admin

Required roles for creating network resources during installation

  • DNS Administrator

Optional roles

For the cluster to create new limited credentials for its Operators, add the following role:

  • Service Account Key Admin

The roles are applied to the service accounts that the control plane and compute machines use:

Table 1.3. GCP service account permissions

AccountRoles

Control Plane

roles/compute.instanceAdmin

roles/compute.networkAdmin

roles/compute.securityAdmin

roles/storage.admin

roles/iam.serviceAccountUser

Compute

roles/compute.viewer

roles/storage.admin

1.1.6. Supported GCP regions

You can deploy an OpenShift Container Platform cluster to the following Google Cloud Platform (GCP) regions:

  • asia-east1 (Changhua County, Taiwan)
  • asia-east2 (Hong Kong)
  • asia-northeast1 (Tokyo, Japan)
  • asia-northeast2 (Osaka, Japan)
  • asia-south1 (Mumbai, India)
  • asia-southeast1 (Jurong West, Singapore)
  • australia-southeast1 (Sydney, Australia)
  • europe-north1 (Hamina, Finland)
  • europe-west1 (St. Ghislain, Belgium)
  • europe-west2 (London, England, UK)
  • europe-west3 (Frankfurt, Germany)
  • europe-west4 (Eemshaven, Netherlands)
  • europe-west6 (Zürich, Switzerland)
  • northamerica-northeast1 (Montréal, Québec, Canada)
  • southamerica-east1 (São Paulo, Brazil)
  • us-central1 (Council Bluffs, Iowa, USA)
  • us-east1 (Moncks Corner, South Carolina, USA)
  • us-east4 (Ashburn, Northern Virginia, USA)
  • us-west1 (The Dalles, Oregon, USA)
  • us-west2 (Los Angeles, California, USA)

1.1.7. Next steps

1.2. Manually creating IAM for GCP

1.2.1. Manually create IAM

The Cloud Credential Operator (CCO) can be put into manual mode prior to installation in environments where the cloud identity and access management (IAM) APIs are not reachable, or the administrator prefers not to store an administrator-level credential secret in the cluster kube-system namespace.

Procedure

  1. Run the OpenShift Container Platform installer to generate manifests:

    $ openshift-install create manifests --dir=<installation_directory> 1
    1
    For <installation_directory>, specify the directory name to store the files that the installation program creates.
  2. Insert a ConfigMap into the manifests directory so that the Cloud Credential Operator is placed in manual mode:

    $ cat <<EOF > mycluster/manifests/cco-configmap.yaml
    apiVersion: v1
    kind: ConfigMap
    metadata:
      name: cloud-credential-operator-config
      namespace: openshift-cloud-credential-operator
      annotations:
        release.openshift.io/create-only: "true"
    data:
      disabled: "true"
    EOF
  3. Remove the admin credential secret created using your local cloud credentials. This removal prevents your admin credential from being stored in the cluster:

    $ rm mycluster/openshift/99_cloud-creds-secret.yaml
  4. Obtain the OpenShift Container Platform release image your openshift-install binary is built to use:

    $ openshift-install version

    Example output

    release image quay.io/openshift-release-dev/ocp-release:4.y.z-x86_64

  5. Locate all CredentialsRequests in this release image that target the cloud you are deploying on:

    $ oc adm release extract quay.io/openshift-release-dev/ocp-release:4.y.z-x86_64 --credentials-requests --cloud=gcp

    This displays the details for each request.

    Sample CredentialsRequest

    apiVersion: cloudcredential.openshift.io/v1
    kind: CredentialsRequest
    metadata:
      labels:
        controller-tools.k8s.io: "1.0"
      name: openshift-image-registry-gcs
      namespace: openshift-cloud-credential-operator
    spec:
      secretRef:
        name: installer-cloud-credentials
        namespace: openshift-image-registry
      providerSpec:
        apiVersion: cloudcredential.openshift.io/v1
        kind: GCPProviderSpec
        predefinedRoles:
        - roles/storage.admin
        - roles/iam.serviceAccountUser
        skipServiceCheck: true

  6. Create YAML files for secrets in the openshift-install manifests directory that you generated previously. The secrets must be stored using the namespace and secret name defined in the spec.secretRef for each credentialsRequest. The format for the secret data varies for each cloud provider.
  7. Proceed with cluster creation:

    $ openshift-install create cluster --dir=<installation_directory>
    Important

    Before upgrading a cluster that uses manually maintained credentials, you must ensure that the CCO is in an upgradeable state. For details, see the Upgrading clusters with manually maintained credentials section of the installation content for your cloud provider.

1.2.2. Admin credentials root secret format

Each cloud provider uses a credentials root secret in the kube-system namespace by convention, which is then used to satisfy all CredentialsRequests and create their respective secrets. This is done either by minting new credentials, with mint mode, or by copying the credentials root secret, with passthrough mode.

The format for the secret varies by cloud, and is also used for each CredentialsRequest secret.

Google Cloud Platform (GCP) secret format

apiVersion: v1
kind: Secret
metadata:
  namespace: kube-system
  name: gcp-credentials
stringData:
  service_account.json: <ServiceAccount>

1.2.3. Upgrading clusters with manually maintained credentials

If credentials are added in a future release, the Cloud Credential Operator (CCO) upgradable status for a cluster with manually maintained credentials changes to false. For minor release, for example, from 4.5 to 4.6, this status prevents you from upgrading until you have addressed any updated permissions. For z-stream releases, for example, from 4.5.10 to 4.5.11, the upgrade is not blocked, but the credentials must still be updated for the new release.

Use the Administrator perspective of the web console to determine if the CCO is upgradeable.

  1. Navigate to AdministrationCluster Settings.
  2. To view the CCO status details, click cloud-credential in the Cluster Operators list.
  3. If the Upgradeable status in the Conditions section is False, examine the credentialsRequests for the new release and update the manually maintained credentials on your cluster to match before upgrading.

In addition to creating new credentials for the release image that you are upgrading to, you must review the required permissions for existing credentials and accommodate any new permissions requirements for existing components in the new release. The CCO cannot detect these mismatches and will not set upgradable to false in this case.

The Manually creating IAM section of the installation content for your cloud provider explains how to obtain and use the credentials required for your cloud.

1.2.4. Mint Mode

Mint Mode is supported for AWS, GCP, and Azure.

The default and recommended best practice for running OpenShift Container Platform is to run the installer with an administrator-level cloud credential. The admin credential is stored in the kube-system namespace, and then used by the Cloud Credential Operator to process the CredentialRequests in the cluster and create new users for each with specific permissions.

The benefits of Mint Mode include:

  • Each cluster component only has the permissions it requires.
  • Automatic, on-going reconciliation for cloud credentials including upgrades, which might require additional credentials or permissions.

One drawback is that Mint Mode requires admin credential storage in a cluster kube-system secret.

1.3. Installing a cluster quickly on GCP

In OpenShift Container Platform version 4.5, you can install a cluster on Google Cloud Platform (GCP) that uses the default configuration options.

1.3.1. Prerequisites

1.3.2. Internet and Telemetry access for OpenShift Container Platform

In OpenShift Container Platform 4.5, you require access to the internet to install your cluster. The Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, also requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to the Red Hat OpenShift Cluster Manager (OCM).

Once you confirm that your Red Hat OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually using OCM, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.

You must have internet access to:

  • Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
  • Access Quay.io to obtain the packages that are required to install your cluster.
  • Obtain the packages that are required to perform cluster updates.
Important

If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry.

1.3.3. Generating an SSH private key and adding it to the agent

If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.

Note

In a production environment, you require disaster recovery and debugging.

You can use this key to SSH into the master nodes as the user core. When you deploy the cluster, the key is added to the core user’s ~/.ssh/authorized_keys list.

Note

You must use a local key, not one that you configured with platform-specific approaches such as AWS key pairs.

Procedure

  1. If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:

    $ ssh-keygen -t rsa -b 4096 -N '' \
        -f <path>/<file_name> 1
    1
    Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key.

    Running this command generates an SSH key that does not require a password in the location that you specified.

  2. Start the ssh-agent process as a background task:

    $ eval "$(ssh-agent -s)"

    Example output

    Agent pid 31874

  3. Add your SSH private key to the ssh-agent:

    $ ssh-add <path>/<file_name> 1

    Example output

    Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

    1
    Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa

Next steps

  • When you install OpenShift Container Platform, provide the SSH public key to the installation program.

1.3.4. Obtaining the installation program

Before you install OpenShift Container Platform, download the installation file on a local computer.

Prerequisites

  • A computer that runs Linux or macOS, with 500 MB of local disk space

Procedure

  1. Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
  2. Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.

    Important

    The installation program creates several files on the computer that you use to install your cluster. You must keep both the installation program and the files that the installation program creates after you finish installing the cluster.

    Important

    Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider.

  3. Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

    $ tar xvf openshift-install-linux.tar.gz
  4. From the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret as a .txt file. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

1.3.5. Deploying the cluster

You can install OpenShift Container Platform on a compatible cloud platform.

Important

You can run the create cluster command of the installation program only once, during initial installation.

Prerequisites

  • Configure an account with the cloud platform that hosts your cluster.
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Remove any existing GCP credentials that do not use the service account key for the GCP account that you configured for your cluster and that are stored in the following locations:

    • The GOOGLE_CREDENTIALS, GOOGLE_CLOUD_KEYFILE_JSON, or GCLOUD_KEYFILE_JSON environment variables
    • The ~/.gcp/osServiceAccount.json file
    • The gcloud cli default credentials
  2. Run the installation program:

    $ ./openshift-install create cluster --dir=<installation_directory> \ 1
        --log-level=info 2
    1
    For <installation_directory>, specify the directory name to store the files that the installation program creates.
    2
    To view different installation details, specify warn, debug, or error instead of info.
    Important

    Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    Provide values at the prompts:

    1. Optional: Select an SSH key to use to access your cluster machines.

      Note

      For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

    2. Select gcp as the platform to target.
    3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
    4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
    5. Select the region to deploy the cluster to.
    6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
    7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
    8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
    Note

    If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed.

    When the cluster deployment completes, directions for accessing your cluster, including a link to its web console and credentials for the kubeadmin user, display in your terminal.

    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

    Important

    You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster.

  3. Optional: You can reduce the number of permissions for the service account that you used to install the cluster.

    • If you assigned the Owner role to your service account, you can remove that role and replace it with the Viewer role.
    • If you included the Service Account Key Admin role, you can remove it.

1.3.6. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.3.6.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.3.6.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.3.6.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.3.7. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.3.8. Next steps

1.4. Installing a cluster on GCP with customizations

In OpenShift Container Platform version 4.5, you can install a customized cluster on infrastructure that the installation program provisions on Google Cloud Platform (GCP). To customize the installation, you modify parameters in the install-config.yaml file before you install the cluster.

1.4.1. Prerequisites

1.4.2. Internet and Telemetry access for OpenShift Container Platform

In OpenShift Container Platform 4.5, you require access to the internet to install your cluster. The Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, also requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to the Red Hat OpenShift Cluster Manager (OCM).

Once you confirm that your Red Hat OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually using OCM, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.

You must have internet access to:

  • Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
  • Access Quay.io to obtain the packages that are required to install your cluster.
  • Obtain the packages that are required to perform cluster updates.
Important

If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry.

1.4.3. Generating an SSH private key and adding it to the agent

If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.

Note

In a production environment, you require disaster recovery and debugging.

You can use this key to SSH into the master nodes as the user core. When you deploy the cluster, the key is added to the core user’s ~/.ssh/authorized_keys list.

Note

You must use a local key, not one that you configured with platform-specific approaches such as AWS key pairs.

Procedure

  1. If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:

    $ ssh-keygen -t rsa -b 4096 -N '' \
        -f <path>/<file_name> 1
    1
    Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key.

    Running this command generates an SSH key that does not require a password in the location that you specified.

  2. Start the ssh-agent process as a background task:

    $ eval "$(ssh-agent -s)"

    Example output

    Agent pid 31874

  3. Add your SSH private key to the ssh-agent:

    $ ssh-add <path>/<file_name> 1

    Example output

    Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

    1
    Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa

Next steps

  • When you install OpenShift Container Platform, provide the SSH public key to the installation program.

1.4.4. Obtaining the installation program

Before you install OpenShift Container Platform, download the installation file on a local computer.

Prerequisites

  • A computer that runs Linux or macOS, with 500 MB of local disk space

Procedure

  1. Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
  2. Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.

    Important

    The installation program creates several files on the computer that you use to install your cluster. You must keep both the installation program and the files that the installation program creates after you finish installing the cluster.

    Important

    Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider.

  3. Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

    $ tar xvf openshift-install-linux.tar.gz
  4. From the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret as a .txt file. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

1.4.5. Creating the installation configuration file

You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> 1
      1
      For <installation_directory>, specify the directory name to store the files that the installation program creates.
      Important

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        Note

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.
      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
      5. Select the region to deploy the cluster to.
      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.
  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

1.4.5.1. Installation configuration parameters

Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.

Note

After installation, you cannot modify these parameters in the install-config.yaml file.

Table 1.4. Required parameters

ParameterDescriptionValues

apiVersion

The API version for the install-config.yaml content. The current version is v1. The installer may also support older API versions.

String

baseDomain

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

metadata

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

metadata.name

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters, hyphens (-), and periods (.), such as dev.

platform

The configuration for the specific platform upon which to perform the installation: aws, baremetal, azure, openstack, ovirt, vsphere. For additional information about platform.<platform> parameters, consult the following table for your specific platform.

Object

pullSecret

Get this pull secret from https://cloud.redhat.com/openshift/install/pull-secret to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}

Table 1.5. Optional parameters

ParameterDescriptionValues

additionalTrustBundle

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

compute

The configuration for the machines that comprise the compute nodes.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

compute.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

compute.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on compute machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

compute.name

Required if you use compute. The name of the machine pool.

worker

compute.platform

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

compute.replicas

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

controlPlane

The configuration for the machines that comprise the control plane.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

controlPlane.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

controlPlane.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on control plane machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

controlPlane.name

Required if you use controlPlane. The name of the machine pool.

master

controlPlane.platform

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

controlPlane.replicas

The number of control plane machines to provision.

A positive integer greater than or equal to 3. The default value is 3.

credentialsMode

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Note

Not all CCO modes are supported for all cloud providers. For more information on CCO modes, see the Cloud Credential Operator entry in the Red Hat Operators reference content.

Mint, Passthrough, Manual, or an empty string ("").

fips

Enable or disable FIPS mode. The default is false (disabled). If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.

false or true

imageContentSources

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

imageContentSources.source

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

imageContentSources.mirrors

Specify one or more repositories that may also contain the same images.

Array of strings

networking

The configuration for the Pod network provider in the cluster.

Object

networking.clusterNetwork

The IP address pools for pods. The default is 10.128.0.0/14 with a host prefix of /23.

Array of objects

networking.clusterNetwork.cidr

Required if you use networking.clusterNetwork. The IP block address pool.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.clusterNetwork.hostPrefix

Required if you use networking.clusterNetwork. The prefix size to allocate to each node from the CIDR. For example, 24 would allocate 2^8=256 adresses to each node.

Integer

networking.machineNetwork

The IP address pools for machines.

Array of objects

networking.machineNetwork.cidr

Required if you use networking.machineNetwork. The IP block address pool. The default is 10.0.0.0/16 for all platforms other than libvirt. For libvirt, the default is 192.168.126.0/24.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.networkType

The type of network to install. The default is OpenShiftSDN.

String

networking.serviceNetwork

The IP address pools for services. The default is 172.30.0.0/16.

Array of IP networks. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

publish

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. To deploy a private cluster, which cannot be accessed from the internet, set publish to Internal. The default value is External.

sshKey

The SSH key or keys to authenticate access your cluster machines.

Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

One or more keys. For example:

sshKey:
  <key1>
  <key2>
  <key3>

Table 1.6. Additional Google Cloud Platform (GCP) parameters

ParameterDescriptionValues

platform.gcp.network

The name of the existing VPC that you want to deploy your cluster to.

String.

platform.gcp.type

The GCP machine type.

The GCP machine type.

platform.gcp.zones

The availability zones where the installation program creates machines for the specified MachinePool.

A list of valid GCP availability zones, such as us-central1-a, in a YAML sequence.

platform.gcp.controlPlaneSubnet

The name of the existing subnet in your VPC that you want to deploy your control plane machines to.

The subnet name.

platform.gcp.computeSubnet

The name of the existing subnet in your VPC that you want to deploy your compute machines to.

The subnet name.

1.4.5.2. Sample customized install-config.yaml file for GCP

You can customize the install-config.yaml file to specify more details about your OpenShift Container Platform cluster’s platform or modify the values of the required parameters.

Important

This sample YAML file is provided for reference only. You must obtain your install-config.yaml file by using the installation program and modify it.

apiVersion: v1
baseDomain: example.com 1
controlPlane: 2
  hyperthreading: Enabled 3 4
  name: master
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
compute: 5
- hyperthreading: Enabled 6
  name: worker
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
metadata:
  name: test-cluster 7
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OpenShiftSDN
  serviceNetwork:
  - 172.30.0.0/16
platform:
  gcp:
    ProjectID: openshift-production 8
    region: us-central1 9
pullSecret: '{"auths": ...}' 10
fips: false 11
sshKey: ssh-ed25519 AAAA... 12
1 7 8 9 10
Required. The installation program prompts you for this value.
2 5
If you do not provide these parameters and values, the installation program provides the default value.
3 6
The controlPlane section is a single mapping, but the compute section is a sequence of mappings. To meet the requirements of the different data structures, the first line of the compute section must begin with a hyphen, -, and the first line of the controlPlane section must not. Although both sections currently define a single machine pool, it is possible that future versions of OpenShift Container Platform will support defining multiple compute pools during installation. Only one control plane pool is used.
4
Whether to enable or disable simultaneous multithreading, or hyperthreading. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores. You can disable it by setting the parameter value to Disabled. If you disable simultaneous multithreading in some cluster machines, you must disable it in all cluster machines.
Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance. Use larger machine types, such as n1-standard-8, for your machines if you disable simultaneous multithreading.

11
Whether to enable or disable FIPS mode. By default, FIPS mode is not enabled. If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.
12
You can optionally provide the sshKey value that you use to access the machines in your cluster.
Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

1.4.6. Deploying the cluster

You can install OpenShift Container Platform on a compatible cloud platform.

Important

You can run the create cluster command of the installation program only once, during initial installation.

Prerequisites

  • Configure an account with the cloud platform that hosts your cluster.
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Remove any existing GCP credentials that do not use the service account key for the GCP account that you configured for your cluster and that are stored in the following locations:

    • The GOOGLE_CREDENTIALS, GOOGLE_CLOUD_KEYFILE_JSON, or GCLOUD_KEYFILE_JSON environment variables
    • The ~/.gcp/osServiceAccount.json file
    • The gcloud cli default credentials
  2. Run the installation program:

    $ ./openshift-install create cluster --dir=<installation_directory> \ 1
        --log-level=info 2
    1
    For <installation_directory>, specify the location of your customized ./install-config.yaml file.
    2
    To view different installation details, specify warn, debug, or error instead of info.
    Note

    If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed.

    When the cluster deployment completes, directions for accessing your cluster, including a link to its web console and credentials for the kubeadmin user, display in your terminal.

    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

    Important

    You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster.

  3. Optional: You can reduce the number of permissions for the service account that you used to install the cluster.

    • If you assigned the Owner role to your service account, you can remove that role and replace it with the Viewer role.
    • If you included the Service Account Key Admin role, you can remove it.

1.4.7. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.4.7.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.4.7.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.4.7.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.4.8. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.4.9. Next steps

1.5. Installing a cluster on GCP with network customizations

In OpenShift Container Platform version 4.5, you can install a cluster with a customized network configuration on infrastructure that the installation program provisions on Google Cloud Platform (GCP). By customizing your network configuration, your cluster can coexist with existing IP address allocations in your environment and integrate with existing MTU and VXLAN configurations. To customize the installation, you modify parameters in the install-config.yaml file before you install the cluster.

You must set most of the network configuration parameters during installation, and you can modify only kubeProxy configuration parameters in a running cluster.

1.5.1. Prerequisites

1.5.2. Internet and Telemetry access for OpenShift Container Platform

In OpenShift Container Platform 4.5, you require access to the internet to install your cluster. The Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, also requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to the Red Hat OpenShift Cluster Manager (OCM).

Once you confirm that your Red Hat OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually using OCM, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.

You must have internet access to:

  • Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
  • Access Quay.io to obtain the packages that are required to install your cluster.
  • Obtain the packages that are required to perform cluster updates.
Important

If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry.

1.5.3. Generating an SSH private key and adding it to the agent

If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.

Note

In a production environment, you require disaster recovery and debugging.

You can use this key to SSH into the master nodes as the user core. When you deploy the cluster, the key is added to the core user’s ~/.ssh/authorized_keys list.

Note

You must use a local key, not one that you configured with platform-specific approaches such as AWS key pairs.

Procedure

  1. If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:

    $ ssh-keygen -t rsa -b 4096 -N '' \
        -f <path>/<file_name> 1
    1
    Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key.

    Running this command generates an SSH key that does not require a password in the location that you specified.

  2. Start the ssh-agent process as a background task:

    $ eval "$(ssh-agent -s)"

    Example output

    Agent pid 31874

  3. Add your SSH private key to the ssh-agent:

    $ ssh-add <path>/<file_name> 1

    Example output

    Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

    1
    Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa

Next steps

  • When you install OpenShift Container Platform, provide the SSH public key to the installation program.

1.5.4. Obtaining the installation program

Before you install OpenShift Container Platform, download the installation file on a local computer.

Prerequisites

  • A computer that runs Linux or macOS, with 500 MB of local disk space

Procedure

  1. Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
  2. Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.

    Important

    The installation program creates several files on the computer that you use to install your cluster. You must keep both the installation program and the files that the installation program creates after you finish installing the cluster.

    Important

    Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider.

  3. Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

    $ tar xvf openshift-install-linux.tar.gz
  4. From the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret as a .txt file. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

1.5.5. Creating the installation configuration file

You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> 1
      1
      For <installation_directory>, specify the directory name to store the files that the installation program creates.
      Important

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        Note

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.
      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
      5. Select the region to deploy the cluster to.
      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.
  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

1.5.5.1. Installation configuration parameters

Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.

Note

After installation, you cannot modify these parameters in the install-config.yaml file.

Table 1.7. Required parameters

ParameterDescriptionValues

apiVersion

The API version for the install-config.yaml content. The current version is v1. The installer may also support older API versions.

String

baseDomain

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

metadata

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

metadata.name

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters, hyphens (-), and periods (.), such as dev.

platform

The configuration for the specific platform upon which to perform the installation: aws, baremetal, azure, openstack, ovirt, vsphere. For additional information about platform.<platform> parameters, consult the following table for your specific platform.

Object

pullSecret

Get this pull secret from https://cloud.redhat.com/openshift/install/pull-secret to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}

Table 1.8. Optional parameters

ParameterDescriptionValues

additionalTrustBundle

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

compute

The configuration for the machines that comprise the compute nodes.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

compute.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

compute.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on compute machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

compute.name

Required if you use compute. The name of the machine pool.

worker

compute.platform

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

compute.replicas

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

controlPlane

The configuration for the machines that comprise the control plane.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

controlPlane.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

controlPlane.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on control plane machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

controlPlane.name

Required if you use controlPlane. The name of the machine pool.

master

controlPlane.platform

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

controlPlane.replicas

The number of control plane machines to provision.

A positive integer greater than or equal to 3. The default value is 3.

credentialsMode

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Note

Not all CCO modes are supported for all cloud providers. For more information on CCO modes, see the Cloud Credential Operator entry in the Red Hat Operators reference content.

Mint, Passthrough, Manual, or an empty string ("").

fips

Enable or disable FIPS mode. The default is false (disabled). If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.

false or true

imageContentSources

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

imageContentSources.source

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

imageContentSources.mirrors

Specify one or more repositories that may also contain the same images.

Array of strings

networking

The configuration for the Pod network provider in the cluster.

Object

networking.clusterNetwork

The IP address pools for pods. The default is 10.128.0.0/14 with a host prefix of /23.

Array of objects

networking.clusterNetwork.cidr

Required if you use networking.clusterNetwork. The IP block address pool.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.clusterNetwork.hostPrefix

Required if you use networking.clusterNetwork. The prefix size to allocate to each node from the CIDR. For example, 24 would allocate 2^8=256 adresses to each node.

Integer

networking.machineNetwork

The IP address pools for machines.

Array of objects

networking.machineNetwork.cidr

Required if you use networking.machineNetwork. The IP block address pool. The default is 10.0.0.0/16 for all platforms other than libvirt. For libvirt, the default is 192.168.126.0/24.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.networkType

The type of network to install. The default is OpenShiftSDN.

String

networking.serviceNetwork

The IP address pools for services. The default is 172.30.0.0/16.

Array of IP networks. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

publish

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. To deploy a private cluster, which cannot be accessed from the internet, set publish to Internal. The default value is External.

sshKey

The SSH key or keys to authenticate access your cluster machines.

Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

One or more keys. For example:

sshKey:
  <key1>
  <key2>
  <key3>

Table 1.9. Additional Google Cloud Platform (GCP) parameters

ParameterDescriptionValues

platform.gcp.network

The name of the existing VPC that you want to deploy your cluster to.

String.

platform.gcp.type

The GCP machine type.

The GCP machine type.

platform.gcp.zones

The availability zones where the installation program creates machines for the specified MachinePool.

A list of valid GCP availability zones, such as us-central1-a, in a YAML sequence.

platform.gcp.controlPlaneSubnet

The name of the existing subnet in your VPC that you want to deploy your control plane machines to.

The subnet name.

platform.gcp.computeSubnet

The name of the existing subnet in your VPC that you want to deploy your compute machines to.

The subnet name.

1.5.5.2. Network configuration parameters

You can modify your cluster network configuration parameters in the install-config.yaml configuration file. The following table describes the parameters.

Note

You cannot modify these parameters in the install-config.yaml file after installation.

Table 1.10. Required network parameters

ParameterDescriptionValue

networking.networkType

The default Container Network Interface (CNI) network provider plug-in to deploy.

Either OpenShiftSDN or OVNKubernetes. The default value is OpenShiftSDN.

networking.clusterNetwork[].cidr

A block of IP addresses from which Pod IP addresses are allocated. The OpenShiftSDN network plug-in supports multiple cluster networks. The address blocks for multiple cluster networks must not overlap. Select address pools large enough to fit your anticipated workload.

An IP address allocation in CIDR format. The default value is 10.128.0.0/14.

networking.clusterNetwork[].hostPrefix

The subnet prefix length to assign to each individual node. For example, if hostPrefix is set to 23, then each node is assigned a /23 subnet out of the given cidr, allowing for 510 (2^(32 - 23) - 2) Pod IP addresses.

A subnet prefix. The default value is 23.

networking.serviceNetwork[]

A block of IP addresses for services. OpenShiftSDN allows only one serviceNetwork block. The address block must not overlap with any other network block.

An IP address allocation in CIDR format. The default value is 172.30.0.0/16.

networking.machineNetwork[].cidr

A block of IP addresses assigned to nodes created by the OpenShift Container Platform installation program while installing the cluster. The address block must not overlap with any other network block. Multiple CIDR ranges may be specified.

An IP address allocation in CIDR format. The default value is 10.0.0.0/16.

1.5.5.3. Sample customized install-config.yaml file for GCP

You can customize the install-config.yaml file to specify more details about your OpenShift Container Platform cluster’s platform or modify the values of the required parameters.

Important

This sample YAML file is provided for reference only. You must obtain your install-config.yaml file by using the installation program and modify it.

apiVersion: v1
baseDomain: example.com 1
controlPlane: 2
  hyperthreading: Enabled 3 4
  name: master
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
compute: 5
- hyperthreading: Enabled 6
  name: worker
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
metadata:
  name: test-cluster 7
networking: 8
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OpenShiftSDN
  serviceNetwork:
  - 172.30.0.0/16
platform:
  gcp:
    ProjectID: openshift-production 9
    region: us-central1 10
pullSecret: '{"auths": ...}' 11
fips: false 12
sshKey: ssh-ed25519 AAAA... 13
1 7 9 10 11
Required. The installation program prompts you for this value.
2 5 8
If you do not provide these parameters and values, the installation program provides the default value.
3 6
The controlPlane section is a single mapping, but the compute section is a sequence of mappings. To meet the requirements of the different data structures, the first line of the compute section must begin with a hyphen, -, and the first line of the controlPlane section must not. Although both sections currently define a single machine pool, it is possible that future versions of OpenShift Container Platform will support defining multiple compute pools during installation. Only one control plane pool is used.
4
Whether to enable or disable simultaneous multithreading, or hyperthreading. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores. You can disable it by setting the parameter value to Disabled. If you disable simultaneous multithreading in some cluster machines, you must disable it in all cluster machines.
Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance. Use larger machine types, such as n1-standard-8, for your machines if you disable simultaneous multithreading.

12
Whether to enable or disable FIPS mode. By default, FIPS mode is not enabled. If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.
13
You can optionally provide the sshKey value that you use to access the machines in your cluster.
Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

1.5.6. Modifying advanced network configuration parameters

You can modify the advanced network configuration parameters only before you install the cluster. Advanced configuration customization lets you integrate your cluster into your existing network environment by specifying an MTU or VXLAN port, by allowing customization of kube-proxy settings, and by specifying a different mode for the openshiftSDNConfig parameter.

Important

Modifying the OpenShift Container Platform manifest files directly is not supported.

Prerequisites

  • Create the install-config.yaml file and complete any modifications to it.

Procedure

  1. Use the following command to create manifests:

    $ ./openshift-install create manifests --dir=<installation_directory> 1
    1
    For <installation_directory>, specify the name of the directory that contains the install-config.yaml file for your cluster.
  2. Create a file that is named cluster-network-03-config.yml in the <installation_directory>/manifests/ directory:

    $ touch <installation_directory>/manifests/cluster-network-03-config.yml 1
    1
    For <installation_directory>, specify the directory name that contains the manifests/ directory for your cluster.

    After creating the file, several network configuration files are in the manifests/ directory, as shown:

    $ ls <installation_directory>/manifests/cluster-network-*

    Example output

    cluster-network-01-crd.yml
    cluster-network-02-config.yml
    cluster-network-03-config.yml

  3. Open the cluster-network-03-config.yml file in an editor and enter a CR that describes the Operator configuration you want:

    apiVersion: operator.openshift.io/v1
    kind: Network
    metadata:
      name: cluster
    spec: 1
      clusterNetwork:
      - cidr: 10.128.0.0/14
        hostPrefix: 23
      serviceNetwork:
      - 172.30.0.0/16
      defaultNetwork:
        type: OpenShiftSDN
        openshiftSDNConfig:
          mode: NetworkPolicy
          mtu: 1450
          vxlanPort: 4789
    1
    The parameters for the spec parameter are only an example. Specify your configuration for the Cluster Network Operator in the CR.

    The CNO provides default values for the parameters in the CR, so you must specify only the parameters that you want to change.

  4. Save the cluster-network-03-config.yml file and quit the text editor.
  5. Optional: Back up the manifests/cluster-network-03-config.yml file. The installation program deletes the manifests/ directory when creating the cluster.

1.5.7. Cluster Network Operator configuration

The configuration for the cluster network is specified as part of the Cluster Network Operator (CNO) configuration and stored in a CR object that is named cluster. The CR specifies the parameters for the Network API in the operator.openshift.io API group.

You can specify the cluster network configuration for your OpenShift Container Platform cluster by setting the parameter values for the defaultNetwork parameter in the CNO CR. The following CR displays the default configuration for the CNO and explains both the parameters you can configure and the valid parameter values:

Cluster Network Operator CR

apiVersion: operator.openshift.io/v1
kind: Network
metadata:
  name: cluster
spec:
  clusterNetwork: 1
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  serviceNetwork: 2
  - 172.30.0.0/16
  defaultNetwork: 3
    ...
  kubeProxyConfig: 4
    iptablesSyncPeriod: 30s 5
    proxyArguments:
      iptables-min-sync-period: 6
      - 0s

1 2
Specified in the install-config.yaml file.
3
Configures the default Container Network Interface (CNI) network provider for the cluster network.
4
The parameters for this object specify the kube-proxy configuration. If you do not specify the parameter values, the Cluster Network Operator applies the displayed default parameter values. If you are using the OVN-Kubernetes default CNI network provider, the kube-proxy configuration has no effect.
5
The refresh period for iptables rules. The default value is 30s. Valid suffixes include s, m, and h and are described in the Go time package documentation.
Note

Because of performance improvements introduced in OpenShift Container Platform 4.3 and greater, adjusting the iptablesSyncPeriod parameter is no longer necessary.

6
The minimum duration before refreshing iptables rules. This parameter ensures that the refresh does not happen too frequently. Valid suffixes include s, m, and h and are described in the Go time package.

1.5.7.1. Configuration parameters for the OpenShift SDN default CNI network provider

The following YAML object describes the configuration parameters for the OpenShift SDN default Container Network Interface (CNI) network provider.

defaultNetwork:
  type: OpenShiftSDN 1
  openshiftSDNConfig: 2
    mode: NetworkPolicy 3
    mtu: 1450 4
    vxlanPort: 4789 5
1
Specified in the install-config.yaml file.
2
Specify only if you want to override part of the OpenShift SDN configuration.
3
Configures the network isolation mode for OpenShift SDN. The allowed values are Multitenant, Subnet, or NetworkPolicy. The default value is NetworkPolicy.
4
The maximum transmission unit (MTU) for the VXLAN overlay network. This value is normally configured automatically, but if the nodes in your cluster do not all use the same MTU, then you must set this explicitly to 50 less than the smallest node MTU value.
5
The port to use for all VXLAN packets. The default value is 4789. If you are running in a virtualized environment with existing nodes that are part of another VXLAN network, then you might be required to change this. For example, when running an OpenShift SDN overlay on top of VMware NSX-T, you must select an alternate port for VXLAN, since both SDNs use the same default VXLAN port number.

On Amazon Web Services (AWS), you can select an alternate port for the VXLAN between port 9000 and port 9999.

1.5.7.2. Configuration parameters for the OVN-Kubernetes default CNI network provider

The following YAML object describes the configuration parameters for the OVN-Kubernetes default CNI network provider.

defaultNetwork:
  type: OVNKubernetes 1
  ovnKubernetesConfig: 2
    mtu: 1400 3
    genevePort: 6081 4
1
Specified in the install-config.yaml file.
2
Specify only if you want to override part of the OVN-Kubernetes configuration.
3
The MTU for the Geneve (Generic Network Virtualization Encapsulation) overlay network. This value is normally configured automatically, but if the nodes in your cluster do not all use the same MTU, then you must set this explicitly to 100 less than the smallest node MTU value.
4
The UDP port for the Geneve overlay network.

1.5.7.3. Cluster Network Operator example configuration

A complete CR object for the CNO is displayed in the following example:

Cluster Network Operator example CR

apiVersion: operator.openshift.io/v1
kind: Network
metadata:
  name: cluster
spec:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  serviceNetwork:
  - 172.30.0.0/16
  defaultNetwork:
    type: OpenShiftSDN
    openshiftSDNConfig:
      mode: NetworkPolicy
      mtu: 1450
      vxlanPort: 4789
  kubeProxyConfig:
    iptablesSyncPeriod: 30s
    proxyArguments:
      iptables-min-sync-period:
      - 0s

1.5.8. Deploying the cluster

You can install OpenShift Container Platform on a compatible cloud platform.

Important

You can run the create cluster command of the installation program only once, during initial installation.

Prerequisites

  • Configure an account with the cloud platform that hosts your cluster.
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Run the installation program:

    $ ./openshift-install create cluster --dir=<installation_directory> \ 1
        --log-level=info 2
    1
    For <installation_directory>, specify the
    2
    To view different installation details, specify warn, debug, or error instead of info.
    Note

    If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed.

    When the cluster deployment completes, directions for accessing your cluster, including a link to its web console and credentials for the kubeadmin user, display in your terminal.

    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

    Important

    You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster.

1.5.9. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.5.9.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.5.9.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.5.9.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.5.10. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.5.11. Next steps

1.6. Installing a cluster on GCP into an existing VPC

In OpenShift Container Platform version 4.5, you can install a cluster into an existing Virtual Private Cloud (VPC) on Google Cloud Platform (GCP). The installation program provisions the rest of the required infrastructure, which you can further customize. To customize the installation, you modify parameters in the install-config.yaml file before you install the cluster.

1.6.1. Prerequisites

1.6.2. Internet and Telemetry access for OpenShift Container Platform

In OpenShift Container Platform 4.5, you require access to the internet to install your cluster. The Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, also requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to the Red Hat OpenShift Cluster Manager (OCM).

Once you confirm that your Red Hat OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually using OCM, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.

You must have internet access to:

  • Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
  • Access Quay.io to obtain the packages that are required to install your cluster.
  • Obtain the packages that are required to perform cluster updates.
Important

If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry.

1.6.3. Generating an SSH private key and adding it to the agent

If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.

Note

In a production environment, you require disaster recovery and debugging.

You can use this key to SSH into the master nodes as the user core. When you deploy the cluster, the key is added to the core user’s ~/.ssh/authorized_keys list.

Note

You must use a local key, not one that you configured with platform-specific approaches such as AWS key pairs.

Procedure

  1. If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:

    $ ssh-keygen -t rsa -b 4096 -N '' \
        -f <path>/<file_name> 1
    1
    Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key.

    Running this command generates an SSH key that does not require a password in the location that you specified.

  2. Start the ssh-agent process as a background task:

    $ eval "$(ssh-agent -s)"

    Example output

    Agent pid 31874

  3. Add your SSH private key to the ssh-agent:

    $ ssh-add <path>/<file_name> 1

    Example output

    Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

    1
    Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa

Next steps

  • When you install OpenShift Container Platform, provide the SSH public key to the installation program.

1.6.4. Obtaining the installation program

Before you install OpenShift Container Platform, download the installation file on a local computer.

Prerequisites

  • A computer that runs Linux or macOS, with 500 MB of local disk space

Procedure

  1. Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
  2. Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.

    Important

    The installation program creates several files on the computer that you use to install your cluster. You must keep both the installation program and the files that the installation program creates after you finish installing the cluster.

    Important

    Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider.

  3. Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

    $ tar xvf openshift-install-linux.tar.gz
  4. From the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret as a .txt file. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

1.6.5. Creating the installation configuration file

You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> 1
      1
      For <installation_directory>, specify the directory name to store the files that the installation program creates.
      Important

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        Note

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.
      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
      5. Select the region to deploy the cluster to.
      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.
  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

1.6.5.1. Installation configuration parameters

Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.

Note

After installation, you cannot modify these parameters in the install-config.yaml file.

Table 1.11. Required parameters

ParameterDescriptionValues

apiVersion

The API version for the install-config.yaml content. The current version is v1. The installer may also support older API versions.

String

baseDomain

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

metadata

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

metadata.name

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters, hyphens (-), and periods (.), such as dev.

platform

The configuration for the specific platform upon which to perform the installation: aws, baremetal, azure, openstack, ovirt, vsphere. For additional information about platform.<platform> parameters, consult the following table for your specific platform.

Object

pullSecret

Get this pull secret from https://cloud.redhat.com/openshift/install/pull-secret to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}

Table 1.12. Optional parameters

ParameterDescriptionValues

additionalTrustBundle

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

compute

The configuration for the machines that comprise the compute nodes.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

compute.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

compute.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on compute machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

compute.name

Required if you use compute. The name of the machine pool.

worker

compute.platform

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

compute.replicas

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

controlPlane

The configuration for the machines that comprise the control plane.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

controlPlane.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

controlPlane.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on control plane machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

controlPlane.name

Required if you use controlPlane. The name of the machine pool.

master

controlPlane.platform

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

controlPlane.replicas

The number of control plane machines to provision.

A positive integer greater than or equal to 3. The default value is 3.

credentialsMode

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Note

Not all CCO modes are supported for all cloud providers. For more information on CCO modes, see the Cloud Credential Operator entry in the Red Hat Operators reference content.

Mint, Passthrough, Manual, or an empty string ("").

fips

Enable or disable FIPS mode. The default is false (disabled). If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.

false or true

imageContentSources

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

imageContentSources.source

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

imageContentSources.mirrors

Specify one or more repositories that may also contain the same images.

Array of strings

networking

The configuration for the Pod network provider in the cluster.

Object

networking.clusterNetwork

The IP address pools for pods. The default is 10.128.0.0/14 with a host prefix of /23.

Array of objects

networking.clusterNetwork.cidr

Required if you use networking.clusterNetwork. The IP block address pool.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.clusterNetwork.hostPrefix

Required if you use networking.clusterNetwork. The prefix size to allocate to each node from the CIDR. For example, 24 would allocate 2^8=256 adresses to each node.

Integer

networking.machineNetwork

The IP address pools for machines.

Array of objects

networking.machineNetwork.cidr

Required if you use networking.machineNetwork. The IP block address pool. The default is 10.0.0.0/16 for all platforms other than libvirt. For libvirt, the default is 192.168.126.0/24.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.networkType

The type of network to install. The default is OpenShiftSDN.

String

networking.serviceNetwork

The IP address pools for services. The default is 172.30.0.0/16.

Array of IP networks. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

publish

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. To deploy a private cluster, which cannot be accessed from the internet, set publish to Internal. The default value is External.

sshKey

The SSH key or keys to authenticate access your cluster machines.

Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

One or more keys. For example:

sshKey:
  <key1>
  <key2>
  <key3>

Table 1.13. Additional Google Cloud Platform (GCP) parameters

ParameterDescriptionValues

platform.gcp.network

The name of the existing VPC that you want to deploy your cluster to.

String.

platform.gcp.type

The GCP machine type.

The GCP machine type.

platform.gcp.zones

The availability zones where the installation program creates machines for the specified MachinePool.

A list of valid GCP availability zones, such as us-central1-a, in a YAML sequence.

platform.gcp.controlPlaneSubnet

The name of the existing subnet in your VPC that you want to deploy your control plane machines to.

The subnet name.

platform.gcp.computeSubnet

The name of the existing subnet in your VPC that you want to deploy your compute machines to.

The subnet name.

1.6.5.2. Sample customized install-config.yaml file for GCP

You can customize the install-config.yaml file to specify more details about your OpenShift Container Platform cluster’s platform or modify the values of the required parameters.

Important

This sample YAML file is provided for reference only. You must obtain your install-config.yaml file by using the installation program and modify it.

apiVersion: v1
baseDomain: example.com 1
controlPlane: 2
  hyperthreading: Enabled 3 4
  name: master
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
compute: 5
- hyperthreading: Enabled 6
  name: worker
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
metadata:
  name: test-cluster 7
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OpenShiftSDN
  serviceNetwork:
  - 172.30.0.0/16
platform:
  gcp:
    ProjectID: openshift-production 8
    region: us-central1 9
    network: existing_vpc 10
    controlPlaneSubnet: control_plane_subnet 11
    computeSubnet: compute_subnet 12
pullSecret: '{"auths": ...}' 13
fips: false 14
sshKey: ssh-ed25519 AAAA... 15
1 7 8 9 13
Required. The installation program prompts you for this value.
2 5
If you do not provide these parameters and values, the installation program provides the default value.
3 6
The controlPlane section is a single mapping, but the compute section is a sequence of mappings. To meet the requirements of the different data structures, the first line of the compute section must begin with a hyphen, -, and the first line of the controlPlane section must not. Although both sections currently define a single machine pool, it is possible that future versions of OpenShift Container Platform will support defining multiple compute pools during installation. Only one control plane pool is used.
4
Whether to enable or disable simultaneous multithreading, or hyperthreading. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores. You can disable it by setting the parameter value to Disabled. If you disable simultaneous multithreading in some cluster machines, you must disable it in all cluster machines.
Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance. Use larger machine types, such as n1-standard-8, for your machines if you disable simultaneous multithreading.

10
If you use an existing VPC, specify its name.
11
If you use an existing VPC, specify the name of the existing subnet to deploy the control plane machines to. The subnet must belong to the VPC that you specified.
12
If you use an existing VPC, specify the name of the existing subnet to deploy the compute machines to. The subnet must belong to the VPC that you specified.
14
Whether to enable or disable FIPS mode. By default, FIPS mode is not enabled. If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.
15
You can optionally provide the sshKey value that you use to access the machines in your cluster.
Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

1.6.5.3. Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the Internet and instead have an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites

  • An existing install-config.yaml file.
  • Review the sites that your cluster requires access to and determine whether any need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. Add sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

    Note

    The Proxy object status.noProxy field is populated with the values of the networking.machineNetwork[].cidr, networking.clusterNetwork[].cidr, and networking.serviceNetwork[] fields from your installation configuration.

    For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the Proxy object status.noProxy field is also populated with the instance metadata endpoint (169.254.169.254).

Procedure

  1. Edit your install-config.yaml file and add the proxy settings. For example:

    apiVersion: v1
    baseDomain: my.domain.com
    proxy:
      httpProxy: http://<username>:<pswd>@<ip>:<port> 1
      httpsProxy: http://<username>:<pswd>@<ip>:<port> 2
      noProxy: example.com 3
    additionalTrustBundle: | 4
        -----BEGIN CERTIFICATE-----
        <MY_TRUSTED_CA_CERT>
        -----END CERTIFICATE-----
    ...
    1
    A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpProxy value.
    2
    A proxy URL to use for creating HTTPS connections outside the cluster. If this field is not specified, then httpProxy is used for both HTTP and HTTPS connections. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpsProxy value.
    3
    A comma-separated list of destination domain names, domains, IP addresses, or other network CIDRs to exclude proxying. Preface a domain with . to include all subdomains of that domain. Use * to bypass proxy for all destinations.
    4
    If provided, the installation program generates a ConfigMap that is named user-ca-bundle in the openshift-config namespace that contains one or more additional CA certificates that are required for proxying HTTPS connections. The Cluster Network Operator then creates a trusted-ca-bundle ConfigMap that merges these contents with the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle, and this ConfigMap is referenced in the Proxy object’s trustedCA field. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the RHCOS trust bundle. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must provide the MITM CA certificate.
    Note

    The installation program does not support the proxy readinessEndpoints field.

  2. Save the file and reference it when installing OpenShift Container Platform.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Note

Only the Proxy object named cluster is supported, and no additional proxies can be created.

1.6.6. Deploying the cluster

You can install OpenShift Container Platform on a compatible cloud platform.

Important

You can run the create cluster command of the installation program only once, during initial installation.

Prerequisites

  • Configure an account with the cloud platform that hosts your cluster.
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Remove any existing GCP credentials that do not use the service account key for the GCP account that you configured for your cluster and that are stored in the following locations:

    • The GOOGLE_CREDENTIALS, GOOGLE_CLOUD_KEYFILE_JSON, or GCLOUD_KEYFILE_JSON environment variables
    • The ~/.gcp/osServiceAccount.json file
    • The gcloud cli default credentials
  2. Run the installation program:

    $ ./openshift-install create cluster --dir=<installation_directory> \ 1
        --log-level=info 2
    1
    For <installation_directory>, specify the location of your customized ./install-config.yaml file.
    2
    To view different installation details, specify warn, debug, or error instead of info.
    Note

    If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed.

    When the cluster deployment completes, directions for accessing your cluster, including a link to its web console and credentials for the kubeadmin user, display in your terminal.

    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

    Important

    You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster.

  3. Optional: You can reduce the number of permissions for the service account that you used to install the cluster.

    • If you assigned the Owner role to your service account, you can remove that role and replace it with the Viewer role.
    • If you included the Service Account Key Admin role, you can remove it.

1.6.7. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.6.7.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.6.7.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.6.7.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.6.8. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.6.9. Next steps

1.7. Installing a private cluster on GCP

In OpenShift Container Platform version 4.5, you can install a private cluster into an existing VPC on Google Cloud Platform (GCP). The installation program provisions the rest of the required infrastructure, which you can further customize. To customize the installation, you modify parameters in the install-config.yaml file before you install the cluster.

1.7.1. Prerequisites

1.7.2. Private clusters

You can deploy a private OpenShift Container Platform cluster that does not expose external endpoints. Private clusters are accessible from only an internal network and are not visible to the Internet.

By default, OpenShift Container Platform is provisioned to use publicly-accessible DNS and endpoints. A private cluster sets the DNS, Ingress Controller, and API server to private when you deploy your cluster. This means that the cluster resources are only accessible from your internal network and are not visible to the internet.

To deploy a private cluster, you must use existing networking that meets your requirements. Your cluster resources might be shared between other clusters on the network.

Additionally, you must deploy a private cluster from a machine that has access the API services for the cloud you provision to, the hosts on the network that you provision, and to the internet to obtain installation media. You can use any machine that meets these access requirements and follows your company’s guidelines. For example, this machine can be a bastion host on your cloud network or a machine that has access to the network through a VPN.

1.7.2.1. Private clusters in GCP

To create a private cluster on Google Cloud Platform (GCP), you must provide an existing private VPC and subnets to host the cluster. The installation program must also be able to resolve the DNS records that the cluster requires. The installation program configures the Ingress Operator and API server for only internal traffic.

The cluster still requires access to Internet to access the GCP APIs.

The following items are not required or created when you install a private cluster:

  • Public subnets
  • Public network load balancers, which support public ingress
  • A public DNS zone that matches the baseDomain for the cluster

The installation program does use the baseDomain that you specify to create a private DNS zone and the required records for the cluster. The cluster is configured so that the Operators do not create public records for the cluster and all cluster machines are placed in the private subnets that you specify.

Because it is not possible to limit access to external load balancers based on source tags, the private cluster uses only internal load balancers to allow access to internal instances.

The internal load balancer relies on Instance Groups rather than the Target Pools that the network load balancers use. The installation program creates instance groups for each zone, even if there is no instance in that group.

  • The cluster IP address is internal only.
  • One forwarding rule manages both the Kubernetes API and Machine config server ports.
  • The backend service is comprised of each zone’s instance group and, while it exists, the bootstrap instance group.
  • The firewall uses a single rule that is based on only internal source ranges.
1.7.2.1.1. Limitations

No health check for the Machine config server, /healthz, runs because of a difference in load balancer functionality. Two internal load balancers cannot share a single IP address, but two network load balaners can share a single external IP address. Instead, the health of an instance is determined entirely by the /readyz check on port 6443.

1.7.3. About using a custom VPC

In OpenShift Container Platform 4.5, you can deploy a cluster into an existing VPC in Google Cloud Platform (GCP). If you do, you must also use existing subnets within the VPC and routing rules.

By deploying OpenShift Container Platform into an existing GCP VPC, you might be able to avoid limit constraints in new accounts or more easily abide by the operational constraints that your company’s guidelines set. This is a good option to use if you cannot obtain the infrastructure creation permissions that are required to create the VPC yourself.

1.7.3.1. Requirements for using your VPC

The installation program will no longer create the following components:

  • VPC
  • Subnets
  • Cloud Router
  • Cloud NAT
  • NAT IP addresses

If you use a custom VPC, you must correctly configure it and its subnets for the installation program and the cluster to use. The installation program cannot subdivide network ranges for the cluster to use, set route tables for the subnets, or set VPC options like DHCP, so you must do so before you install the cluster.

Your VPC and subnets must meet the following characteristics:

  • The VPC must be in the same GCP project that you deploy the OpenShift Container Platform cluster to.
  • To allow access to the internet from the control plane and compute machines, you must configure Cloud NAT on the subnets to allow egress to it. These machines do not have a public address. Even if you do not require access to the internet, you must allow egress to the VPC network to obtain the installation program and images. Because multiple Cloud NATs cannot be configured on the shared subnets, the installation program cannot configure it.

To ensure that the subnets that you provide are suitable, the installation program confirms the following data:

  • All the subnets that you specify exist and belong to the VPC that you specified.
  • The subnet CIDRs belong to the machine CIDR.
  • You must provide a subnet to deploy the cluster control plane and compute machines to. You can use the same subnet for both machine types.

If you destroy a cluster that uses an existing VPC, the VPC is not deleted.

1.7.3.2. Division of permissions

Starting with OpenShift Container Platform 4.3, you do not need all of the permissions that are required for an installation program-provisioned infrastructure cluster to deploy a cluster. This change mimics the division of permissions that you might have at your company: some individuals can create different resources in your clouds than others. For example, you might be able to create application-specific items, like instances, buckets, and load balancers, but not networking-related components such as VPCs, subnets, or ingress rules.

The GCP credentials that you use when you create your cluster do not need the networking permissions that are required to make VPCs and core networking components within the VPC, such as subnets, routing tables, internet gateways, NAT, and VPN. You still need permission to make the application resources that the machines within the cluster require, such as load balancers, security groups, storage, and nodes.

1.7.3.3. Isolation between clusters

If you deploy OpenShift Container Platform to an existing network, the isolation of cluster services is preserved by firewall rules that reference the machines in your cluster by the cluster’s infrastructure ID. Only traffic within the cluster is allowed.

If you deploy multiple clusters to the same VPC, the following components might share access between clusters:

  • The API, which is globally available with an external publishing strategy or available throughout the network in an internal publishing strategy
  • Debugging tools, such as ports on VM instances that are open to the machineCidr for SSH and ICMP access

1.7.4. Internet and Telemetry access for OpenShift Container Platform

In OpenShift Container Platform 4.5, you require access to the internet to install your cluster. The Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, also requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to the Red Hat OpenShift Cluster Manager (OCM).

Once you confirm that your Red Hat OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually using OCM, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.

You must have internet access to:

  • Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
  • Access Quay.io to obtain the packages that are required to install your cluster.
  • Obtain the packages that are required to perform cluster updates.
Important

If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry.

1.7.5. Generating an SSH private key and adding it to the agent

If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.

Note

In a production environment, you require disaster recovery and debugging.

You can use this key to SSH into the master nodes as the user core. When you deploy the cluster, the key is added to the core user’s ~/.ssh/authorized_keys list.

Note

You must use a local key, not one that you configured with platform-specific approaches such as AWS key pairs.

Procedure

  1. If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:

    $ ssh-keygen -t rsa -b 4096 -N '' \
        -f <path>/<file_name> 1
    1
    Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key.

    Running this command generates an SSH key that does not require a password in the location that you specified.

  2. Start the ssh-agent process as a background task:

    $ eval "$(ssh-agent -s)"

    Example output

    Agent pid 31874

  3. Add your SSH private key to the ssh-agent:

    $ ssh-add <path>/<file_name> 1

    Example output

    Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

    1
    Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa

Next steps

  • When you install OpenShift Container Platform, provide the SSH public key to the installation program.

1.7.6. Obtaining the installation program

Before you install OpenShift Container Platform, download the installation file on a local computer.

Prerequisites

  • A computer that runs Linux or macOS, with 500 MB of local disk space

Procedure

  1. Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
  2. Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.

    Important

    The installation program creates several files on the computer that you use to install your cluster. You must keep both the installation program and the files that the installation program creates after you finish installing the cluster.

    Important

    Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider.

  3. Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

    $ tar xvf openshift-install-linux.tar.gz
  4. From the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret as a .txt file. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

1.7.7. Manually creating the installation configuration file

For installations of a private OpenShift Container Platform cluster that are only accessible from an internal network and are not visible to the Internet, you must manually generate your installation configuration file.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the access token for your cluster.

Procedure

  1. Create an installation directory to store your required installation assets in:

    $ mkdir <installation_directory>
    Important

    You must create a directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

  2. Customize the following install-config.yaml file template and save it in the <installation_directory>.

    Note

    You must name this configuration file install-config.yaml.

  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the next step of the installation process. You must back it up now.

1.7.7.1. Installation configuration parameters

Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.

Note

After installation, you cannot modify these parameters in the install-config.yaml file.

Table 1.14. Required parameters

ParameterDescriptionValues

apiVersion

The API version for the install-config.yaml content. The current version is v1. The installer may also support older API versions.

String

baseDomain

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

metadata

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

metadata.name

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters, hyphens (-), and periods (.), such as dev.

platform

The configuration for the specific platform upon which to perform the installation: aws, baremetal, azure, openstack, ovirt, vsphere. For additional information about platform.<platform> parameters, consult the following table for your specific platform.

Object

pullSecret

Get this pull secret from https://cloud.redhat.com/openshift/install/pull-secret to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}

Table 1.15. Optional parameters

ParameterDescriptionValues

additionalTrustBundle

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

compute

The configuration for the machines that comprise the compute nodes.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

compute.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

compute.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on compute machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

compute.name

Required if you use compute. The name of the machine pool.

worker

compute.platform

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

compute.replicas

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

controlPlane

The configuration for the machines that comprise the control plane.

Array of machine-pool objects. For details, see the following "Machine-pool" table.

controlPlane.architecture

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are amd64 (the default).

String

controlPlane.hyperthreading

Whether to enable or disable simultaneous multithreading, or hyperthreading, on control plane machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

controlPlane.name

Required if you use controlPlane. The name of the machine pool.

master

controlPlane.platform

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value.

aws, azure, gcp, openstack, ovirt, vsphere, or {}

controlPlane.replicas

The number of control plane machines to provision.

A positive integer greater than or equal to 3. The default value is 3.

credentialsMode

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Note

Not all CCO modes are supported for all cloud providers. For more information on CCO modes, see the Cloud Credential Operator entry in the Red Hat Operators reference content.

Mint, Passthrough, Manual, or an empty string ("").

fips

Enable or disable FIPS mode. The default is false (disabled). If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.

false or true

imageContentSources

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

imageContentSources.source

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

imageContentSources.mirrors

Specify one or more repositories that may also contain the same images.

Array of strings

networking

The configuration for the Pod network provider in the cluster.

Object

networking.clusterNetwork

The IP address pools for pods. The default is 10.128.0.0/14 with a host prefix of /23.

Array of objects

networking.clusterNetwork.cidr

Required if you use networking.clusterNetwork. The IP block address pool.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.clusterNetwork.hostPrefix

Required if you use networking.clusterNetwork. The prefix size to allocate to each node from the CIDR. For example, 24 would allocate 2^8=256 adresses to each node.

Integer

networking.machineNetwork

The IP address pools for machines.

Array of objects

networking.machineNetwork.cidr

Required if you use networking.machineNetwork. The IP block address pool. The default is 10.0.0.0/16 for all platforms other than libvirt. For libvirt, the default is 192.168.126.0/24.

IP network. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

networking.networkType

The type of network to install. The default is OpenShiftSDN.

String

networking.serviceNetwork

The IP address pools for services. The default is 172.30.0.0/16.

Array of IP networks. IP networks are represented as strings using Classless Inter-Domain Routing (CIDR) notation with a traditional IP address or network number, followed by the forward slash (/) character, followed by a decimal value between 0 and 32 that describes the number of significant bits. For example, 10.0.0.0/16 represents IP addresses 10.0.0.0 through 10.0.255.255.

publish

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. To deploy a private cluster, which cannot be accessed from the internet, set publish to Internal. The default value is External.

sshKey

The SSH key or keys to authenticate access your cluster machines.

Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

One or more keys. For example:

sshKey:
  <key1>
  <key2>
  <key3>

Table 1.16. Additional Google Cloud Platform (GCP) parameters

ParameterDescriptionValues

platform.gcp.network

The name of the existing VPC that you want to deploy your cluster to.

String.

platform.gcp.type

The GCP machine type.

The GCP machine type.

platform.gcp.zones

The availability zones where the installation program creates machines for the specified MachinePool.

A list of valid GCP availability zones, such as us-central1-a, in a YAML sequence.

platform.gcp.controlPlaneSubnet

The name of the existing subnet in your VPC that you want to deploy your control plane machines to.

The subnet name.

platform.gcp.computeSubnet

The name of the existing subnet in your VPC that you want to deploy your compute machines to.

The subnet name.

1.7.7.2. Sample customized install-config.yaml file for GCP

You can customize the install-config.yaml file to specify more details about your OpenShift Container Platform cluster’s platform or modify the values of the required parameters.

Important

This sample YAML file is provided for reference only. You must obtain your install-config.yaml file by using the installation program and modify it.

apiVersion: v1
baseDomain: example.com 1
controlPlane: 2
  hyperthreading: Enabled 3 4
  name: master
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
compute: 5
- hyperthreading: Enabled 6
  name: worker
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
metadata:
  name: test-cluster 7
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OpenShiftSDN
  serviceNetwork:
  - 172.30.0.0/16
platform:
  gcp:
    ProjectID: openshift-production 8
    region: us-central1 9
    network: existing_vpc 10
    controlPlaneSubnet: control_plane_subnet 11
    computeSubnet: compute_subnet 12
pullSecret: '{"auths": ...}' 13
fips: false 14
sshKey: ssh-ed25519 AAAA... 15
publish: Internal 16
1 7 8 9 13
Required. The installation program prompts you for this value.
2 5
If you do not provide these parameters and values, the installation program provides the default value.
3 6
The controlPlane section is a single mapping, but the compute section is a sequence of mappings. To meet the requirements of the different data structures, the first line of the compute section must begin with a hyphen, -, and the first line of the controlPlane section must not. Although both sections currently define a single machine pool, it is possible that future versions of OpenShift Container Platform will support defining multiple compute pools during installation. Only one control plane pool is used.
4
Whether to enable or disable simultaneous multithreading, or hyperthreading. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores. You can disable it by setting the parameter value to Disabled. If you disable simultaneous multithreading in some cluster machines, you must disable it in all cluster machines.
Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance. Use larger machine types, such as n1-standard-8, for your machines if you disable simultaneous multithreading.

10
If you use an existing VPC, specify its name.
11
If you use an existing VPC, specify the name of the existing subnet to deploy the control plane machines to. The subnet must belong to the VPC that you specified.
12
If you use an existing VPC, specify the name of the existing subnet to deploy the compute machines to. The subnet must belong to the VPC that you specified.
14
Whether to enable or disable FIPS mode. By default, FIPS mode is not enabled. If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.
15
You can optionally provide the sshKey value that you use to access the machines in your cluster.
Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

16
How to publish the user-facing endpoints of your cluster. Set publish to Internal to deploy a private cluster, which cannot be accessed from the internet. The default value is External.

1.7.7.3. Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the Internet and instead have an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites

  • An existing install-config.yaml file.
  • Review the sites that your cluster requires access to and determine whether any need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. Add sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

    Note

    The Proxy object status.noProxy field is populated with the values of the networking.machineNetwork[].cidr, networking.clusterNetwork[].cidr, and networking.serviceNetwork[] fields from your installation configuration.

    For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the Proxy object status.noProxy field is also populated with the instance metadata endpoint (169.254.169.254).

Procedure

  1. Edit your install-config.yaml file and add the proxy settings. For example:

    apiVersion: v1
    baseDomain: my.domain.com
    proxy:
      httpProxy: http://<username>:<pswd>@<ip>:<port> 1
      httpsProxy: http://<username>:<pswd>@<ip>:<port> 2
      noProxy: example.com 3
    additionalTrustBundle: | 4
        -----BEGIN CERTIFICATE-----
        <MY_TRUSTED_CA_CERT>
        -----END CERTIFICATE-----
    ...
    1
    A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpProxy value.
    2
    A proxy URL to use for creating HTTPS connections outside the cluster. If this field is not specified, then httpProxy is used for both HTTP and HTTPS connections. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpsProxy value.
    3
    A comma-separated list of destination domain names, domains, IP addresses, or other network CIDRs to exclude proxying. Preface a domain with . to include all subdomains of that domain. Use * to bypass proxy for all destinations.
    4
    If provided, the installation program generates a ConfigMap that is named user-ca-bundle in the openshift-config namespace that contains one or more additional CA certificates that are required for proxying HTTPS connections. The Cluster Network Operator then creates a trusted-ca-bundle ConfigMap that merges these contents with the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle, and this ConfigMap is referenced in the Proxy object’s trustedCA field. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the RHCOS trust bundle. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must provide the MITM CA certificate.
    Note

    The installation program does not support the proxy readinessEndpoints field.

  2. Save the file and reference it when installing OpenShift Container Platform.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Note

Only the Proxy object named cluster is supported, and no additional proxies can be created.

1.7.8. Deploying the cluster

You can install OpenShift Container Platform on a compatible cloud platform.

Important

You can run the create cluster command of the installation program only once, during initial installation.

Prerequisites

  • Configure an account with the cloud platform that hosts your cluster.
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Run the installation program:

    $ ./openshift-install create cluster --dir=<installation_directory> \ 1
        --log-level=info 2
    1
    For <installation_directory>, specify the
    2
    To view different installation details, specify warn, debug, or error instead of info.
    Note

    If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed.

    When the cluster deployment completes, directions for accessing your cluster, including a link to its web console and credentials for the kubeadmin user, display in your terminal.

    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

    Important

    You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster.

1.7.9. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.7.9.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.7.9.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.7.9.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.7.10. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.7.11. Next steps

1.8. Installing a cluster on user-provisioned infrastructure in GCP by using Deployment Manager templates

In OpenShift Container Platform version 4.5, you can install a cluster on Google Cloud Platform (GCP) that uses infrastructure that you provide.

The steps for performing a user-provided infrastructure install are outlined here. Several Deployment Manager templates are provided to assist in completing these steps or to help model your own. You are also free to create the required resources through other methods; the templates are just an example.

1.8.1. Prerequisites

1.8.2. Certificate signing requests management

Because your cluster has limited access to automatic machine management when you use infrastructure that you provision, you must provide a mechanism for approving cluster certificate signing requests (CSRs) after installation. The kube-controller-manager only approves the kubelet client CSRs. The machine-approver cannot guarantee the validity of a serving certificate that is requested by using kubelet credentials because it cannot confirm that the correct machine issued the request. You must determine and implement a method of verifying the validity of the kubelet serving certificate requests and approving them.

1.8.3. Configuring your GCP project

Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.

1.8.3.1. Creating a GCP project

To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster.

Procedure

1.8.3.2. Enabling API services in GCP

Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation.

Prerequisites

  • You created a project to host your cluster.

Procedure

  • Enable the following required API services in the project that hosts your cluster. See Enabling services in the GCP documentation.

    Table 1.17. Required API services

    API serviceConsole service name

    Cloud Deployment Manager V2 API

    deploymentmanager.googleapis.com

    Compute Engine API

    compute.googleapis.com

    Google Cloud APIs

    cloudapis.googleapis.com

    Cloud Resource Manager API

    cloudresourcemanager.googleapis.com

    Google DNS API

    dns.googleapis.com

    IAM Service Account Credentials API

    iamcredentials.googleapis.com

    Identity and Access Management (IAM) API

    iam.googleapis.com

    Service Management API

    servicemanagement.googleapis.com

    Service Usage API

    serviceusage.googleapis.com

    Google Cloud Storage JSON API

    storage-api.googleapis.com

    Cloud Storage

    storage-component.googleapis.com

1.8.3.3. Configuring DNS for GCP

To install OpenShift Container Platform, the Google Cloud Platform (GCP) account you use must have a dedicated public hosted zone in the same project that you host the OpenShift Container Platform cluster. This zone must be authoritative for the domain. The DNS service provides cluster DNS resolution and name lookup for external connections to the cluster.

Procedure

  1. Identify your domain, or subdomain, and registrar. You can transfer an existing domain and registrar or obtain a new one through GCP or another source.

    Note

    If you purchase a new domain, it can take time for the relevant DNS changes to propagate. For more information about purchasing domains through Google, see Google Domains.

  2. Create a public hosted zone for your domain or subdomain in your GCP project. See Creating public zones in the GCP documentation.

    Use an appropriate root domain, such as openshiftcorp.com, or subdomain, such as clusters.openshiftcorp.com.

  3. Extract the new authoritative name servers from the hosted zone records. See Look up your Cloud DNS name servers in the GCP documentation.

    You typically have four name servers.

  4. Update the registrar records for the name servers that your domain uses. For example, if you registered your domain to Google Domains, see the following topic in the Google Domains Help: How to switch to custom name servers.
  5. If you migrated your root domain to Google Cloud DNS, migrate your DNS records. See Migrating to Cloud DNS in the GCP documentation.
  6. If you use a subdomain, follow your company’s procedures to add its delegation records to the parent domain. This process might include a request to your company’s IT department or the division that controls the root domain and DNS services for your company.

1.8.3.4. GCP account limits

The OpenShift Container Platform cluster uses a number of Google Cloud Platform (GCP) components, but the default Quotas do not affect your ability to install a default OpenShift Container Platform cluster.

A default cluster, which contains three compute and three control plane machines, uses the following resources. Note that some resources are required only during the bootstrap process and are removed after the cluster deploys.

Table 1.18. GCP resources used in a default cluster

ServiceComponentLocationTotal resources requiredResources removed after bootstrap

Service account

IAM

Global

5

0

Firewall Rules

Networking

Global

11

1

Forwarding Rules

Compute

Global

2

0

Health checks

Compute

Global

2

0

Images

Compute

Global

1

0

Networks

Networking

Global

1

0

Routers

Networking

Global

1

0

Routes

Networking

Global

2

0

Subnetworks

Compute

Global

2

0

Target Pools

Networking

Global

2

0

Note

If any of the quotas are insufficient during installation, the installation program displays an error that states both which quota was exceeded and the region.

Be sure to consider your actual cluster size, planned cluster growth, and any usage from other clusters that are associated with your account. The CPU, Static IP addresses, and Persistent Disk SSD (Storage) quotas are the ones that are most likely to be insufficient.

If you plan to deploy your cluster in one of the following regions, you will exceed the maximum storage quota and are likely to exceed the CPU quota limit:

  • asia-east2
  • asia-northeast2
  • asia-south1
  • australia-southeast1
  • europe-north1
  • europe-west2
  • europe-west3
  • europe-west6
  • northamerica-northeast1
  • southamerica-east1
  • us-west2

You can increase resource quotas from the GCP console, but you might need to file a support ticket. Be sure to plan your cluster size early so that you can allow time to resolve the support ticket before you install your OpenShift Container Platform cluster.

1.8.3.5. Creating a service account in GCP

OpenShift Container Platform requires a Google Cloud Platform (GCP) service account that provides authentication and authorization to access data in the Google APIs. If you do not have an existing IAM service account that contains the required roles in your project, you must create one.

Prerequisites

  • You created a project to host your cluster.

Procedure

  1. Create a service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation.
  2. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources.

    Note

    While making the service account an Owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable.

  3. Create the service account key in JSON format. See Creating service account keys in the GCP documentation.

    The service account key is required to create a cluster.

1.8.3.5.1. Required GCP permissions

When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. To deploy an OpenShift Container Platform cluster, the service account requires the following permissions. If you deploy your cluster into an existing VPC, the service account does not require certain networking permissions, which are noted in the following lists:

Required roles for the installation program

  • Compute Admin
  • Security Admin
  • Service Account Admin
  • Service Account User
  • Storage Admin

Required roles for creating network resources during installation

  • DNS Administrator

Required roles for user-provisioned GCP infrastructure

  • Deployment Manager Editor
  • Service Account Key Admin

Optional roles

For the cluster to create new limited credentials for its Operators, add the following role:

  • Service Account Key Admin

The roles are applied to the service accounts that the control plane and compute machines use:

Table 1.19. GCP service account permissions

AccountRoles

Control Plane

roles/compute.instanceAdmin

roles/compute.networkAdmin

roles/compute.securityAdmin

roles/storage.admin

roles/iam.serviceAccountUser

Compute

roles/compute.viewer

roles/storage.admin

1.8.3.6. Supported GCP regions

You can deploy an OpenShift Container Platform cluster to the following Google Cloud Platform (GCP) regions:

  • asia-east1 (Changhua County, Taiwan)
  • asia-east2 (Hong Kong)
  • asia-northeast1 (Tokyo, Japan)
  • asia-northeast2 (Osaka, Japan)
  • asia-south1 (Mumbai, India)
  • asia-southeast1 (Jurong West, Singapore)
  • australia-southeast1 (Sydney, Australia)
  • europe-north1 (Hamina, Finland)
  • europe-west1 (St. Ghislain, Belgium)
  • europe-west2 (London, England, UK)
  • europe-west3 (Frankfurt, Germany)
  • europe-west4 (Eemshaven, Netherlands)
  • europe-west6 (Zürich, Switzerland)
  • northamerica-northeast1 (Montréal, Québec, Canada)
  • southamerica-east1 (São Paulo, Brazil)
  • us-central1 (Council Bluffs, Iowa, USA)
  • us-east1 (Moncks Corner, South Carolina, USA)
  • us-east4 (Ashburn, Northern Virginia, USA)
  • us-west1 (The Dalles, Oregon, USA)
  • us-west2 (Los Angeles, California, USA)

1.8.3.7. Installing and configuring CLI tools for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must install and configure the CLI tools for GCP.

Prerequisites

  • You created a project to host your cluster.
  • You created a service account and granted it the required permissions.

Procedure

  1. Install the following binaries in $PATH:

    • gcloud
    • gsutil

    See Install the latest Cloud SDK version in the GCP documentation.

  2. Authenticate using the gcloud tool with your configured service account.

1.8.4. Creating the installation files for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must generate the files that the installation program needs to deploy your cluster and modify them so that the cluster creates only the machines that it will use. You generate and customize the install-config.yaml file, Kubernetes manifests, and Ignition config files.

1.8.4.1. Creating the installation configuration file

You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> 1
      1
      For <installation_directory>, specify the directory name to store the files that the installation program creates.
      Important

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        Note

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.
      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
      5. Select the region to deploy the cluster to.
      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
    3. Optional: If you do not want the cluster to provision compute machines, empty the compute pool by editing the resulting install-config.yaml file to set replicas to 0 for the compute pool:

      compute:
      - hyperthreading: Enabled
        name: worker
        platform: {}
        replicas: 0 1
      1
      Set to 0.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.
  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

1.8.4.2. Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the Internet and instead have an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites

  • An existing install-config.yaml file.
  • Review the sites that your cluster requires access to and determine whether any need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. Add sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

    Note

    The Proxy object status.noProxy field is populated with the values of the networking.machineNetwork[].cidr, networking.clusterNetwork[].cidr, and networking.serviceNetwork[] fields from your installation configuration.

    For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the Proxy object status.noProxy field is also populated with the instance metadata endpoint (169.254.169.254).

Procedure

  1. Edit your install-config.yaml file and add the proxy settings. For example:

    apiVersion: v1
    baseDomain: my.domain.com
    proxy:
      httpProxy: http://<username>:<pswd>@<ip>:<port> 1
      httpsProxy: http://<username>:<pswd>@<ip>:<port> 2
      noProxy: example.com 3
    additionalTrustBundle: | 4
        -----BEGIN CERTIFICATE-----
        <MY_TRUSTED_CA_CERT>
        -----END CERTIFICATE-----
    ...
    1
    A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpProxy value.
    2
    A proxy URL to use for creating HTTPS connections outside the cluster. If this field is not specified, then httpProxy is used for both HTTP and HTTPS connections. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpsProxy value.
    3
    A comma-separated list of destination domain names, domains, IP addresses, or other network CIDRs to exclude proxying. Preface a domain with . to include all subdomains of that domain. Use * to bypass proxy for all destinations.
    4
    If provided, the installation program generates a ConfigMap that is named user-ca-bundle in the openshift-config namespace that contains one or more additional CA certificates that are required for proxying HTTPS connections. The Cluster Network Operator then creates a trusted-ca-bundle ConfigMap that merges these contents with the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle, and this ConfigMap is referenced in the Proxy object’s trustedCA field. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the RHCOS trust bundle. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must provide the MITM CA certificate.
    Note

    The installation program does not support the proxy readinessEndpoints field.

  2. Save the file and reference it when installing OpenShift Container Platform.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Note

Only the Proxy object named cluster is supported, and no additional proxies can be created.

1.8.4.3. Creating the Kubernetes manifest and Ignition config files

Because you must modify some cluster definition files and manually start the cluster machines, you must generate the Kubernetes manifest and Ignition config files that the cluster needs to make its machines.

Important

The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

Prerequisites

  • Obtain the OpenShift Container Platform installation program.
  • Create the install-config.yaml installation configuration file.

Procedure

  1. Generate the Kubernetes manifests for the cluster:

    $ ./openshift-install create manifests --dir=<installation_directory> 1

    Example output

    INFO Consuming Install Config from target directory
    WARNING Making control-plane schedulable by setting MastersSchedulable to true for Scheduler cluster settings

    1
    For <installation_directory>, specify the installation directory that contains the install-config.yaml file you created.

    Because you create your own compute machines later in the installation process, you can safely ignore this warning.

  2. Remove the Kubernetes manifest files that define the control plane machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_master-machines-*.yaml

    By removing these files, you prevent the cluster from automatically generating control plane machines.

  3. Optional: If you do not want the cluster to provision compute machines, remove the Kubernetes manifest files that define the worker machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_worker-machineset-*.yaml

    Because you create and manage the worker machines yourself, you do not need to initialize these machines.

  4. Modify the <installation_directory>/manifests/cluster-scheduler-02-config.yml Kubernetes manifest file to prevent pods from being scheduled on the control plane machines:

    1. Open the <installation_directory>/manifests/cluster-scheduler-02-config.yml file.
    2. Locate the mastersSchedulable parameter and set its value to False.
    3. Save and exit the file.
  5. Optional: If you do not want the Ingress Operator to create DNS records on your behalf, remove the privateZone and publicZone sections from the <installation_directory>/manifests/cluster-dns-02-config.yml DNS configuration file:

    apiVersion: config.openshift.io/v1
    kind: DNS
    metadata:
      creationTimestamp: null
      name: cluster
    spec:
      baseDomain: example.openshift.com
      privateZone: 1
        id: mycluster-100419-private-zone
      publicZone: 2
        id: example.openshift.com
    status: {}
    1 2
    Remove this section completely.

    If you do so, you must add ingress DNS records manually in a later step.

  6. Obtain the Ignition config files:

    $ ./openshift-install create ignition-configs --dir=<installation_directory> 1
    1
    For <installation_directory>, specify the same installation directory.

    The following files are generated in the directory:

    .
    ├── auth
    │   ├── kubeadmin-password
    │   └── kubeconfig
    ├── bootstrap.ign
    ├── master.ign
    ├── metadata.json
    └── worker.ign

1.8.5. Exporting common variables

1.8.5.1. Extracting the infrastructure name

The Ignition config files contain a unique cluster identifier that you can use to uniquely identify your cluster in Google Cloud Platform (GCP). The provided Deployment Manager templates contain references to this infrastructure name, so you must extract it.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  • To extract and view the infrastructure name from the Ignition config file metadata, run the following command:

    $ jq -r .infraID <installation_directory>/metadata.json 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.

    Example output

    openshift-vw9j6 1

    1
    The output of this command is your cluster name and a random string.

1.8.5.2. Exporting common variables for Deployment Manager templates

You must export a common set of variables that are used with the provided Deployment Manager templates used to assist in completing a user-provided infrastructure install on Google Cloud Platform (GCP).

Note

Specific Deployment Manager templates can also require additional exported variables, which are detailed in their related procedures.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  1. Export the following common variables to be used by the provided Deployment Manager templates:

    $ export BASE_DOMAIN='<base_domain>'
    $ export BASE_DOMAIN_ZONE_NAME='<base_domain_zone_name>'
    $ export NETWORK_CIDR='10.0.0.0/16'
    $ export MASTER_SUBNET_CIDR='10.0.0.0/19'
    $ export WORKER_SUBNET_CIDR='10.0.32.0/19'
    
    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    $ export CLUSTER_NAME=`jq -r .clusterName <installation_directory>/metadata.json`
    $ export INFRA_ID=`jq -r .infraID <installation_directory>/metadata.json`
    $ export PROJECT_NAME=`jq -r .gcp.projectID <installation_directory>/metadata.json`
    $ export REGION=`jq -r .gcp.region <installation_directory>/metadata.json`
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.

1.8.6. Creating a VPC in GCP

You must create a VPC in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. You can customize the VPC to meet your requirements. One way to create the VPC is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.

Procedure

  1. Copy the template from the Deployment Manager template for the VPC section of this topic and save it as 01_vpc.py on your computer. This template describes the VPC that your cluster requires.
  2. Create a 01_vpc.yaml resource definition file:

    $ cat <<EOF >01_vpc.yaml
    imports:
    - path: 01_vpc.py
    
    resources:
    - name: cluster-vpc
      type: 01_vpc.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
        master_subnet_cidr: '${MASTER_SUBNET_CIDR}' 3
        worker_subnet_cidr: '${WORKER_SUBNET_CIDR}' 4
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    master_subnet_cidr is the CIDR for the master subnet, for example 10.0.0.0/19.
    4
    worker_subnet_cidr is the CIDR for the worker subnet, for example 10.0.32.0/19.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-vpc --config 01_vpc.yaml

1.8.6.1. Deployment Manager template for the VPC

You can use the following Deployment Manager template to deploy the VPC that you need for your OpenShift Container Platform cluster:

Example 1.1. 01_vpc.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-network',
        'type': 'compute.v1.network',
        'properties': {
            'region': context.properties['region'],
            'autoCreateSubnetworks': False
        }
    }, {
        'name': context.properties['infra_id'] + '-master-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['master_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['worker_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-router',
        'type': 'compute.v1.router',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'nats': [{
                'name': context.properties['infra_id'] + '-nat-master',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 7168,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-master-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }, {
                'name': context.properties['infra_id'] + '-nat-worker',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 512,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-worker-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }]
        }
    }]

    return {'resources': resources}

1.8.7. Creating networking and load balancing components in GCP

You must configure networking and load balancing in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for the network and load balancers section of this topic and save it as 02_infra.py on your computer. This template describes the networking and load balancing objects that your cluster requires.
  2. Export the following variable required by the resource definition:

    $ export CLUSTER_NETWORK=`gcloud compute networks describe ${INFRA_ID}-network --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} --format json | jq -r .selfLink`
  3. Create a 02_infra.yaml resource definition file:

    $ cat <<EOF >02_infra.yaml
    imports:
    - path: 02_infra.py
    
    resources:
    - name: cluster-infra
      type: 02_infra.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
    
        cluster_domain: '${CLUSTER_NAME}.${BASE_DOMAIN}' 3
        cluster_network: '${CLUSTER_NETWORK}' 4
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    cluster_domain is the domain for the cluster, for example openshift.example.com.
    4
    cluster_network is the selfLink URL to the cluster network.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-infra --config 02_infra.yaml
  5. The templates do not create DNS entries due to limitations of Deployment Manager, so you must create them manually:

    1. Export the following variable:

      $ export CLUSTER_IP=`gcloud compute addresses describe ${INFRA_ID}-cluster-public-ip --region=${REGION} --format json | jq -r .address`
    2. Add external DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}
    3. Add internal DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api-int.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone

1.8.7.1. Deployment Manager template for the network and load balancers

You can use the following Deployment Manager template to deploy the networking objects and load balancers that you need for your OpenShift Container Platform cluster:

02_infra.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-cluster-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-api-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 6080,
            'requestPath': '/readyz'
        }
    }, {
        'name': context.properties['infra_id'] + '-api-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-api-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-api-target-pool.selfLink)',
            'portRange': '6443'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 22624,
            'requestPath': '/healthz'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-ign-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-ign-target-pool.selfLink)',
            'portRange': '22623'
        }
    }, {
        'name': context.properties['infra_id'] + '-private-zone',
        'type': 'dns.v1.managedZone',
        'properties': {
            'description': '',
            'dnsName': context.properties['cluster_domain'] + '.',
            'visibility': 'private',
            'privateVisibilityConfig': {
                'networks': [{
                    'networkUrl': context.properties['cluster_network']
                }]
            }
        }
    }]
    return {'resources': resources}

1.8.8. Creating firewall rules and IAM roles in GCP

You must create security groups and roles in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for firewall rules and IAM roles section of this topic and save it as 03_security.py on your computer. This template describes the security groups and roles that your cluster requires.
  2. Export the following variables required by the resource definition:

    $ export MASTER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-master-nat-ip --region ${REGION} --format json | jq -r .address`
    $ export WORKER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-worker-nat-ip --region ${REGION} --format json | jq -r .address`
  3. Create a 03_security.yaml resource definition file:

    $ cat <<EOF >03_security.yaml
    imports:
    - path: 03_security.py
    
    resources:
    - name: cluster-security
      type: 03_security.py
      properties:
        allowed_external_cidr: '0.0.0.0/0' 1
        infra_id: '${INFRA_ID}' 2
        region: '${REGION}' 3
        cluster_network: '${CLUSTER_NETWORK}' 4
        network_cidr: '${NETWORK_CIDR}' 5
        master_nat_ip: '${MASTER_NAT_IP}' 6
        worker_nat_ip: '${WORKER_NAT_IP}' 7
    EOF
    1
    allowed_external_cidr is the CIDR range that can access the cluster API and SSH to the bootstrap host. For an internal cluster, set this value to ${NETWORK_CIDR}.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    region is the region to deploy the cluster into, for example us-central1.
    4
    cluster_network is the selfLink URL to the cluster network.
    5
    network_cidr is the CIDR of the VPC network, for example 10.0.0.0/16.
    6
    master_nat_ip is the IP address of the master NAT, for example 34.94.100.1.
    7
    worker_nat_ip is the IP address of the worker NAT, for example 34.94.200.1.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-security --config 03_security.yaml
  5. Export the variable for the master service account:

    $ export MASTER_SA=${INFRA_ID}-m@${PROJECT_NAME}.iam.gserviceaccount.com
  6. Export the variable for the master service account:

    $ export WORKER_SA=${INFRA_ID}-w@${PROJECT_NAME}.iam.gserviceaccount.com
  7. The templates do not create the policy bindings due to limitations of Deployment Manager, so you must create them manually:

    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.instanceAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.securityAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/iam.serviceAccountUser"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/storage.admin"
    
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/compute.viewer"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/storage.admin"
  8. Create a service account key and store it locally for later use:

    $ gcloud iam service-accounts keys create service-account-key.json --iam-account=${MASTER_SA}

1.8.8.1. Deployment Manager template for firewall rules and IAM roles

You can use the following Deployment Manager template to deploy the security objects that you need for your OpenShift Container Platform cluster:

03_security.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-api',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6443']
            }],
            'sourceRanges':  ['0.0.0.0/0'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-mcs',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['22623']
            }],
            'sourceRanges':  [
                context.properties['network_cidr'],
                context.properties['master_nat_ip'],
                context.properties['worker_nat_ip']
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-health-checks',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6080', '22624']
            }],
            'sourceRanges':  ['35.191.0.0/16', '209.85.152.0/22', '209.85.204.0/22'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-etcd',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['2379-2380']
            }],
            'sourceTags': [context.properties['infra_id'] + '-master'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-control-plane',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['10257']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10259']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-network',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'icmp'
            },{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges':  [context.properties['network_cidr']],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-cluster',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'udp',
                'ports': ['4789', '6081']
            },{
                'IPProtocol': 'tcp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'udp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10250']
            },{
                'IPProtocol': 'tcp',
                'ports': ['30000-32767']
            },{
                'IPProtocol': 'udp',
                'ports': ['30000-32767']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-m',
            'displayName': context.properties['infra_id'] + '-master-node'
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-w',
            'displayName': context.properties['infra_id'] + '-worker-node'
        }
    }]

    return {'resources': resources}

1.8.9. Creating the RHCOS cluster image for the GCP infrastructure

You must use a valid Red Hat Enterprise Linux CoreOS (RHCOS) image for Google Cloud Platform (GCP) for your OpenShift Container Platform nodes.

Procedure

  1. Obtain the RHCOS image from the Product Downloads page on the Red Hat customer portal or the RHCOS image mirror page.

    Important

    The RHCOS images might not change with every release of OpenShift Container Platform. You must download an image with the highest version that is less than or equal to the OpenShift Container Platform version that you install. Use the image version that matches your OpenShift Container Platform version if it is available.

    The file name contains the OpenShift Container Platform version number in the format rhcos-<version>-gcp.tar.

  2. Export the following variable:

    $ export IMAGE_SOURCE=<downloaded_image_file_path>
  3. Create the cluster image:

    $ gcloud compute images create "${INFRA_ID}-rhcos-image" \
        --source-uri="${IMAGE_SOURCE}"

1.8.10. Creating the bootstrap machine in GCP

You must create the bootstrap machine in Google Cloud Platform (GCP) to use during OpenShift Container Platform cluster initialization. One way to create this machine is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your bootstrap machine, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.

Procedure

  1. Copy the template from the Deployment Manager template for the bootstrap machine section of this topic and save it as 04_bootstrap.py on your computer. This template describes the bootstrap machine that your cluster requires.
  2. Export the variables that the deployment template uses:

    1. Export the control plane subnet location:

      $ export CONTROL_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-master-subnet --region=${REGION} --format json | jq -r .selfLink`
    2. Export the location of the Red Hat Enterprise Linux CoreOS (RHCOS) image that the installation program requires:

      $ export CLUSTER_IMAGE=`gcloud compute images describe ${INFRA_ID}-rhcos-image --format json | jq -r .selfLink`
    3. Export the three zones that the cluster uses:

      $ export ZONE_0=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[0] | cut -d "/" -f9`
      $ export ZONE_1=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[1] | cut -d "/" -f9`
      $ export ZONE_2=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[2] | cut -d "/" -f9`
  3. Create a bucket and upload the bootstrap.ign file:

    $ gsutil mb gs://${INFRA_ID}-bootstrap-ignition
    $ gsutil cp bootstrap.ign gs://${INFRA_ID}-bootstrap-ignition/
  4. Create a signed URL for the bootstrap instance to use to access the Ignition config. Export the URL from the output as a variable:

    $ export BOOTSTRAP_IGN=`gsutil signurl -d 1h service-account-key.json \
        gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign | grep "^gs:" | awk '{print $5}'`
  5. Create a 04_bootstrap.yaml resource definition file:

    $ cat <<EOF >04_bootstrap.yaml
    imports:
    - path: 04_bootstrap.py
    
    resources:
    - name: cluster-bootstrap
      type: 04_bootstrap.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
        zone: '${ZONE_0}' 3
    
        cluster_network: '${CLUSTER_NETWORK}' 4
        control_subnet: '${CONTROL_SUBNET}' 5
        image: '${CLUSTER_IMAGE}' 6
        machine_type: 'n1-standard-4' 7
        root_volume_size: '128' 8
    
        bootstrap_ign: '${BOOTSTRAP_IGN}' 9
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    zone is the zone to deploy the bootstrap instance into, for example us-central1-b.
    4
    cluster_network is the selfLink URL to the cluster network.
    5
    control_subnet is the selfLink URL to the control subnet.
    6
    image is the selfLink URL to the RHCOS image.
    7
    machine_type is the machine type of the instance, for example n1-standard-4.
    8
    bootstrap_ign is the URL output when creating a signed URL above.
  6. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-bootstrap --config 04_bootstrap.yaml
  7. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the bootstrap machine manually:

    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap

1.8.10.1. Deployment Manager template for the bootstrap machine

You can use the following Deployment Manager template to deploy the bootstrap machine that you need for your OpenShift Container Platform cluster:

Example 1.2. 04_bootstrap.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-bootstrap-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': '{"ignition":{"config":{"replace":{"source":"' + context.properties['bootstrap_ign'] + '"}},"version":"3.1.0"}}',
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet'],
                'accessConfigs': [{
                    'natIP': '$(ref.' + context.properties['infra_id'] + '-bootstrap-public-ip.address)'
                }]
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                    context.properties['infra_id'] + '-bootstrap'
                ]
            },
            'zone': context.properties['zone']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap-instance-group',
        'type': 'compute.v1.instanceGroup',
        'properties': {
            'namedPorts': [
                {
                    'name': 'ignition',
                    'port': 22623
                }, {
                    'name': 'https',
                    'port': 6443
                }
            ],
            'network': context.properties['cluster_network'],
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.8.11. Creating the control plane machines in GCP

You must create the control plane machines in Google Cloud Platform (GCP) for your cluster to use. One way to create these machines is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your control plane machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.

Procedure

  1. Copy the template from the Deployment Manager template for control plane machines section of this topic and save it as 05_control_plane.py on your computer. This template describes the control plane machines that your cluster requires.
  2. Export the following variables needed by the resource definition:

    $ export MASTER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-master-node " | awk '{print $2}'`
    $ export MASTER_IGNITION=`cat master.ign`
  3. Create a 05_control_plane.yaml resource definition file:

    $ cat <<EOF >05_control_plane.yaml
    imports:
    - path: 05_control_plane.py
    
    resources:
    - name: cluster-control-plane
      type: 05_control_plane.py
      properties:
        infra_id: '${INFRA_ID}' 1
        zones: 2
        - '${ZONE_0}'
        - '${ZONE_1}'
        - '${ZONE_2}'
    
        control_subnet: '${CONTROL_SUBNET}' 3
        image: '${CLUSTER_IMAGE}' 4
        machine_type: 'n1-standard-4' 5
        root_volume_size: '128'
        service_account_email: '${MASTER_SERVICE_ACCOUNT_EMAIL}' 6
    
        ignition: '${MASTER_IGNITION}' 7
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    zones are the zones to deploy the control plane instances into, for example us-central1-a, us-central1-b, and us-central1-c.
    3
    control_subnet is the selfLink URL to the control subnet.
    4
    image is the selfLink URL to the RHCOS image.
    5
    machine_type is the machine type of the instance, for example n1-standard-4.
    6
    service_account_email is the email address for the master service account that you created.
    7
    ignition is the contents of the master.ign file.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-control-plane --config 05_control_plane.yaml
  5. The templates do not manage DNS entries due to limitations of Deployment Manager, so you must add the etcd entries manually:

    $ export MASTER0_IP=`gcloud compute instances describe ${INFRA_ID}-m-0 --zone ${ZONE_0} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER1_IP=`gcloud compute instances describe ${INFRA_ID}-m-1 --zone ${ZONE_1} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER2_IP=`gcloud compute instances describe ${INFRA_ID}-m-2 --zone ${ZONE_2} --format json | jq -r .networkInterfaces[0].networkIP`
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER0_IP} --name etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER1_IP} --name etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER2_IP} --name etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add \
      "0 10 2380 etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      --name _etcd-server-ssl._tcp.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type SRV --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone
  6. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the control plane machines manually:

    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2

1.8.11.1. Deployment Manager template for control plane machines

You can use the following Deployment Mananger template to deploy the control plane machines that you need for your OpenShift Container Platform cluster:

Example 1.3. 05_control_plane.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-master-0',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][0] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][0] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][0]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-1',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][1] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][1] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][1]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-2',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][2] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][2] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][2]
        }
    }]

    return {'resources': resources}

1.8.12. Wait for bootstrap completion and remove bootstrap resources in GCP

After you create all of the required infrastructure in Google Cloud Platform (GCP), wait for the bootstrap process to complete on the machines that you provisioned by using the Ignition config files that you generated with the installation program.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Change to the directory that contains the installation program and run the following command:

    $ ./openshift-install wait-for bootstrap-complete --dir=<installation_directory> \ 1
        --log-level info 2
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2
    To view different installation details, specify warn, debug, or error instead of info.

    If the command exits without a FATAL warning, your production control plane has initialized.

  2. Delete the bootstrap resources:

    $ gcloud compute target-pools remove-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools remove-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gsutil rm gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign
    $ gsutil rb gs://${INFRA_ID}-bootstrap-ignition
    $ gcloud deployment-manager deployments delete ${INFRA_ID}-bootstrap

1.8.13. Creating additional worker machines in GCP

You can create worker machines in Google Cloud Platform (GCP) for your cluster to use by launching individual instances discretely or by automated processes outside the cluster, such as Auto Scaling Groups. You can also take advantage of the built-in cluster scaling mechanisms and the machine API in OpenShift Container Platform.

In this example, you manually launch one instance by using the Deployment Manager template. Additional instances can be launched by including additional resources of type 06_worker.py in the file.

Note

If you do not use the provided Deployment Manager template to create your worker machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Copy the template from the Deployment Manager template for worker machines section of this topic and save it as 06_worker.py on your computer. This template describes the worker machines that your cluster requires.
  2. Export the variables that the resource definition uses.

    1. Export the subnet that hosts the compute machines:

      $ export COMPUTE_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-worker-subnet --region=${REGION} --format json | jq -r .selfLink`
    2. Export the email address for your service account:

      $ export WORKER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-worker-node " | awk '{print $2}'`
    3. Export the location of the compute machine Ignition config file:

      $ export WORKER_IGNITION=`cat worker.ign`
  3. Create a 06_worker.yaml resource definition file:

    $ cat <<EOF >06_worker.yaml
    imports:
    - path: 06_worker.py
    
    resources:
    - name: 'w-a-0' 1
      type: 06_worker.py
      properties:
        infra_id: '${INFRA_ID}' 2
        zone: '${ZONE_0}' 3
    
        compute_subnet: '${COMPUTE_SUBNET}' 4
        image: '${CLUSTER_IMAGE}' 5
        machine_type: 'n1-standard-4' 6
        root_volume_size: '128'
        service_account_email: '${WORKER_SERVICE_ACCOUNT_EMAIL}' 7
    
        ignition: '${WORKER_IGNITION}' 8
    EOF
    1
    name is the name of the worker machine, for example w-a-0.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    zone is the zone to deploy the worker machine into, for example us-central1-a.
    4
    compute_subnet is the selfLink URL to the compute subnet.
    5
    image is the selfLink URL to the RHCOS image.
    6
    machine_type is the machine type of the instance, for example n1-standard-4.
    7
    service_account_email is the email address for the worker service account that you created.
    8
    ignition is the contents of the worker.ign file.
  4. Optional: If you want to launch additional instances, include additional resources of type 06_worker.py in your 06_worker.yaml resource definition file.
  5. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-worker --config 06_worker.yaml

1.8.13.1. Deployment Manager template for worker machines

You can use the following Deloyment Manager template to deploy the worker machines that you need for your OpenShift Container Platform cluster:

Example 1.4. 06_worker.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-' + context.env['name'],
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['compute_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-worker',
                ]
            },
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.8.14. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.8.14.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.8.14.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.8.14.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.8.15. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.8.16. Approving the CSRs for your machines

When you add machines to a cluster, two pending certificate signing requests (CSRs) are generated for each machine that you added. You must confirm that these CSRs are approved or, if necessary, approve them yourself.

Prerequisites

  • You added machines to your cluster.

Procedure

  1. Confirm that the cluster recognizes the machines:

    $ oc get nodes

    Example output

    NAME      STATUS    ROLES   AGE  VERSION
    master-0  Ready     master  63m  v1.19.0
    master-1  Ready     master  63m  v1.19.0
    master-2  Ready     master  64m  v1.19.0
    worker-0  NotReady  worker  76s  v1.19.0
    worker-1  NotReady  worker  70s  v1.19.0

    The output lists all of the machines that you created.

  2. Review the pending CSRs and ensure that you see a client and server request with the Pending or Approved status for each machine that you added to the cluster:

    $ oc get csr

    Example output

    NAME        AGE     REQUESTOR                                                                   CONDITION
    csr-8b2br   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending 1
    csr-8vnps   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending
    csr-bfd72   5m26s   system:node:ip-10-0-50-126.us-east-2.compute.internal                       Pending 2
    csr-c57lv   5m26s   system:node:ip-10-0-95-157.us-east-2.compute.internal                       Pending
    ...

    1
    A client request CSR.
    2
    A server request CSR.

    In this example, two machines are joining the cluster. You might see more approved CSRs in the list.

  3. If the CSRs were not approved, after all of the pending CSRs for the machines you added are in Pending status, approve the CSRs for your cluster machines:

    Note

    Because the CSRs rotate automatically, approve your CSRs within an hour of adding the machines to the cluster. If you do not approve them within an hour, the certificates will rotate, and more than two certificates will be present for each node. You must approve all of these certificates. After you approve the initial CSRs, the subsequent node client CSRs are automatically approved by the cluster kube-controller-manager. You must implement a method of automatically approving the kubelet serving certificate requests.

    • To approve them individually, run the following command for each valid CSR:

      $ oc adm certificate approve <csr_name> 1
      1
      <csr_name> is the name of a CSR from the list of current CSRs.
    • To approve all pending CSRs, run the following command:

      $ oc get csr -o go-template='{{range .items}}{{if not .status}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}' | xargs oc adm certificate approve

Additional information

1.8.17. Optional: Adding the ingress DNS records

If you removed the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs, you must manually create DNS records that point at the ingress load balancer. You can create either a wildcard *.apps.{baseDomain}. or specific records. You can use A, CNAME, and other records per your requirements.

Prerequisites

  • Configure a GCP account.
  • Remove the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.
  • Create the worker machines.

Procedure

  1. Wait for the Ingress router to create a load balancer and populate the EXTERNAL-IP field:

    $ oc -n openshift-ingress get service router-default

    Example output

    NAME             TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)                      AGE
    router-default   LoadBalancer   172.30.18.154   35.233.157.184   80:32288/TCP,443:31215/TCP   98

  2. Add the A record to your zones:

    • To use A records:

      1. Export the variable for the router IP address:

        $ export ROUTER_IP=`oc -n openshift-ingress get service router-default --no-headers | awk '{print $4}'`
      2. Add the A record to the private zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      3. For an external cluster, also add the A record to the public zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    • To add explicit domains instead of using a wildcard, create entries for each of the cluster’s current routes:

      $ oc get --all-namespaces -o jsonpath='{range .items[*]}{range .status.ingress[*]}{.host}{"\n"}{end}{end}' routes

      Example output

      oauth-openshift.apps.your.cluster.domain.example.com
      console-openshift-console.apps.your.cluster.domain.example.com
      downloads-openshift-console.apps.your.cluster.domain.example.com
      alertmanager-main-openshift-monitoring.apps.your.cluster.domain.example.com
      grafana-openshift-monitoring.apps.your.cluster.domain.example.com
      prometheus-k8s-openshift-monitoring.apps.your.cluster.domain.example.com

1.8.18. Completing a GCP installation on user-provisioned infrastructure

After you start the OpenShift Container Platform installation on Google Cloud Platform (GCP) user-provisioned infrastructure, you can monitor the cluster events until the cluster is ready.

Prerequisites

  • Deploy the bootstrap machine for an OpenShift Container Platform cluster on user-provisioned GCP infrastructure.
  • Install the oc CLI and log in.

Procedure

  1. Complete the cluster installation:

    $ ./openshift-install --dir=<installation_directory> wait-for install-complete 1

    Example output

    INFO Waiting up to 30m0s for the cluster to initialize...

    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

  2. Observe the running state of your cluster.

    1. Run the following command to view the current cluster version and status:

      $ oc get clusterversion

      Example output

      NAME      VERSION   AVAILABLE   PROGRESSING   SINCE   STATUS
      version             False       True          24m     Working towards 4.5.4: 99% complete

    2. Run the following command to view the Operators managed on the control plane by the Cluster Version Operator (CVO):

      $ oc get clusteroperators

      Example output

      NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
      authentication                             4.5.4     True        False         False      7m56s
      cloud-credential                           4.5.4     True        False         False      31m
      cluster-autoscaler                         4.5.4     True        False         False      16m
      console                                    4.5.4     True        False         False      10m
      csi-snapshot-controller                    4.5.4     True        False         False      16m
      dns                                        4.5.4     True        False         False      22m
      etcd                                       4.5.4     False       False         False      25s
      image-registry                             4.5.4     True        False         False      16m
      ingress                                    4.5.4     True        False         False      16m
      insights                                   4.5.4     True        False         False      17m
      kube-apiserver                             4.5.4     True        False         False      19m
      kube-controller-manager                    4.5.4     True        False         False      20m
      kube-scheduler                             4.5.4     True        False         False      20m
      kube-storage-version-migrator              4.5.4     True        False         False      16m
      machine-api                                4.5.4     True        False         False      22m
      machine-config                             4.5.4     True        False         False      22m
      marketplace                                4.5.4     True        False         False      16m
      monitoring                                 4.5.4     True        False         False      10m
      network                                    4.5.4     True        False         False      23m
      node-tuning                                4.5.4     True        False         False      23m
      openshift-apiserver                        4.5.4     True        False         False      17m
      openshift-controller-manager               4.5.4     True        False         False      15m
      openshift-samples                          4.5.4     True        False         False      16m
      operator-lifecycle-manager                 4.5.4     True        False         False      22m
      operator-lifecycle-manager-catalog         4.5.4     True        False         False      22m
      operator-lifecycle-manager-packageserver   4.5.4     True        False         False      18m
      service-ca                                 4.5.4     True        False         False      23m
      service-catalog-apiserver                  4.5.4     True        False         False      23m
      service-catalog-controller-manager         4.5.4     True        False         False      23m
      storage                                    4.5.4     True        False         False      17m

    3. Run the following command to view your cluster pods:

      $ oc get pods --all-namespaces

      Example output

      NAMESPACE                                               NAME                                                                READY     STATUS      RESTARTS   AGE
      kube-system                                             etcd-member-ip-10-0-3-111.us-east-2.compute.internal                1/1       Running     0          35m
      kube-system                                             etcd-member-ip-10-0-3-239.us-east-2.compute.internal                1/1       Running     0          37m
      kube-system                                             etcd-member-ip-10-0-3-24.us-east-2.compute.internal                 1/1       Running     0          35m
      openshift-apiserver-operator                            openshift-apiserver-operator-6d6674f4f4-h7t2t                       1/1       Running     1          37m
      openshift-apiserver                                     apiserver-fm48r                                                     1/1       Running     0          30m
      openshift-apiserver                                     apiserver-fxkvv                                                     1/1       Running     0          29m
      openshift-apiserver                                     apiserver-q85nm                                                     1/1       Running     0          29m
      ...
      openshift-service-ca-operator                           openshift-service-ca-operator-66ff6dc6cd-9r257                      1/1       Running     0          37m
      openshift-service-ca                                    apiservice-cabundle-injector-695b6bcbc-cl5hm                        1/1       Running     0          35m
      openshift-service-ca                                    configmap-cabundle-injector-8498544d7-25qn6                         1/1       Running     0          35m
      openshift-service-ca                                    service-serving-cert-signer-6445fc9c6-wqdqn                         1/1       Running     0          35m
      openshift-service-catalog-apiserver-operator            openshift-service-catalog-apiserver-operator-549f44668b-b5q2w       1/1       Running     0          32m
      openshift-service-catalog-controller-manager-operator   openshift-service-catalog-controller-manager-operator-b78cr2lnm     1/1       Running     0          31m

    When the current cluster version is AVAILABLE, the installation is complete.

1.8.19. Next steps

1.9. Installing a cluster with shared VPC on user-provisioned infrastructure in GCP by using Deployment Manager templates

In OpenShift Container Platform version 4.5, you can install a cluster into a shared Virtual Private Cloud (VPC) on Google Cloud Platform (GCP) that uses infrastructure that you provide.

The steps for performing a user-provided infrastructure installation into a shared VPC are outlined here. Several Deployment Manager templates are provided to assist in completing these steps or to help model your own. You are also free to create the required resources through other methods; the templates are just an example.

1.9.1. Prerequisites

1.9.2. Certificate signing requests management

Because your cluster has limited access to automatic machine management when you use infrastructure that you provision, you must provide a mechanism for approving cluster certificate signing requests (CSRs) after installation. The kube-controller-manager only approves the kubelet client CSRs. The machine-approver cannot guarantee the validity of a serving certificate that is requested by using kubelet credentials because it cannot confirm that the correct machine issued the request. You must determine and implement a method of verifying the validity of the kubelet serving certificate requests and approving them.

1.9.3. Configuring the GCP project that hosts your cluster

Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.

1.9.3.1. Creating a GCP project

To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster.

Procedure

1.9.3.2. Enabling API services in GCP

Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation.

Prerequisites

  • You created a project to host your cluster.

Procedure

  • Enable the following required API services in the project that hosts your cluster. See Enabling services in the GCP documentation.

    Table 1.20. Required API services

    API serviceConsole service name

    Cloud Deployment Manager V2 API

    deploymentmanager.googleapis.com

    Compute Engine API

    compute.googleapis.com

    Google Cloud APIs

    cloudapis.googleapis.com

    Cloud Resource Manager API

    cloudresourcemanager.googleapis.com

    Google DNS API

    dns.googleapis.com

    IAM Service Account Credentials API

    iamcredentials.googleapis.com

    Identity and Access Management (IAM) API

    iam.googleapis.com

    Service Management API

    servicemanagement.googleapis.com

    Service Usage API

    serviceusage.googleapis.com

    Google Cloud Storage JSON API

    storage-api.googleapis.com

    Cloud Storage

    storage-component.googleapis.com

1.9.3.3. GCP account limits

The OpenShift Container Platform cluster uses a number of Google Cloud Platform (GCP) components, but the default Quotas do not affect your ability to install a default OpenShift Container Platform cluster.

A default cluster, which contains three compute and three control plane machines, uses the following resources. Note that some resources are required only during the bootstrap process and are removed after the cluster deploys.

Table 1.21. GCP resources used in a default cluster

ServiceComponentLocationTotal resources requiredResources removed after bootstrap

Service account

IAM

Global

5

0

Firewall Rules

Networking

Global

11

1

Forwarding Rules

Compute

Global

2

0

Health checks

Compute

Global

2

0

Images

Compute

Global

1

0

Networks

Networking

Global

1

0

Routers

Networking

Global

1

0

Routes

Networking

Global

2

0

Subnetworks

Compute

Global

2

0

Target Pools

Networking

Global

2

0

Note

If any of the quotas are insufficient during installation, the installation program displays an error that states both which quota was exceeded and the region.

Be sure to consider your actual cluster size, planned cluster growth, and any usage from other clusters that are associated with your account. The CPU, Static IP addresses, and Persistent Disk SSD (Storage) quotas are the ones that are most likely to be insufficient.

If you plan to deploy your cluster in one of the following regions, you will exceed the maximum storage quota and are likely to exceed the CPU quota limit:

  • asia-east2
  • asia-northeast2
  • asia-south1
  • australia-southeast1
  • europe-north1
  • europe-west2
  • europe-west3
  • europe-west6
  • northamerica-northeast1
  • southamerica-east1
  • us-west2

You can increase resource quotas from the GCP console, but you might need to file a support ticket. Be sure to plan your cluster size early so that you can allow time to resolve the support ticket before you install your OpenShift Container Platform cluster.

1.9.3.4. Creating a service account in GCP

OpenShift Container Platform requires a Google Cloud Platform (GCP) service account that provides authentication and authorization to access data in the Google APIs. If you do not have an existing IAM service account that contains the required roles in your project, you must create one.

Prerequisites

  • You created a project to host your cluster.

Procedure

  1. Create a service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation.
  2. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources.

    Note

    While making the service account an Owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable.

  3. Create the service account key in JSON format. See Creating service account keys in the GCP documentation.

    The service account key is required to create a cluster.

1.9.3.4.1. Required GCP permissions

When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. To deploy an OpenShift Container Platform cluster, the service account requires the following permissions. If you deploy your cluster into an existing VPC, the service account does not require certain networking permissions, which are noted in the following lists:

Required roles for the installation program

  • Compute Admin
  • Security Admin
  • Service Account Admin
  • Service Account User
  • Storage Admin

Required roles for creating network resources during installation

  • DNS Administrator

Required roles for user-provisioned GCP infrastructure

  • Deployment Manager Editor
  • Service Account Key Admin

Optional roles

For the cluster to create new limited credentials for its Operators, add the following role:

  • Service Account Key Admin

The roles are applied to the service accounts that the control plane and compute machines use:

Table 1.22. GCP service account permissions

AccountRoles

Control Plane

roles/compute.instanceAdmin

roles/compute.networkAdmin

roles/compute.securityAdmin

roles/storage.admin

roles/iam.serviceAccountUser

Compute

roles/compute.viewer

roles/storage.admin

1.9.3.5. Supported GCP regions

You can deploy an OpenShift Container Platform cluster to the following Google Cloud Platform (GCP) regions:

  • asia-east1 (Changhua County, Taiwan)
  • asia-east2 (Hong Kong)
  • asia-northeast1 (Tokyo, Japan)
  • asia-northeast2 (Osaka, Japan)
  • asia-south1 (Mumbai, India)
  • asia-southeast1 (Jurong West, Singapore)
  • australia-southeast1 (Sydney, Australia)
  • europe-north1 (Hamina, Finland)
  • europe-west1 (St. Ghislain, Belgium)
  • europe-west2 (London, England, UK)
  • europe-west3 (Frankfurt, Germany)
  • europe-west4 (Eemshaven, Netherlands)
  • europe-west6 (Zürich, Switzerland)
  • northamerica-northeast1 (Montréal, Québec, Canada)
  • southamerica-east1 (São Paulo, Brazil)
  • us-central1 (Council Bluffs, Iowa, USA)
  • us-east1 (Moncks Corner, South Carolina, USA)
  • us-east4 (Ashburn, Northern Virginia, USA)
  • us-west1 (The Dalles, Oregon, USA)
  • us-west2 (Los Angeles, California, USA)

1.9.3.6. Installing and configuring CLI tools for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must install and configure the CLI tools for GCP.

Prerequisites

  • You created a project to host your cluster.
  • You created a service account and granted it the required permissions.

Procedure

  1. Install the following binaries in $PATH:

    • gcloud
    • gsutil

    See Install the latest Cloud SDK version in the GCP documentation.

  2. Authenticate using the gcloud tool with your configured service account.

1.9.4. Configuring the GCP project that hosts your shared VPC network

If you use a shared Virtual Private Cloud (VPC) to host your OpenShift Container Platform cluster in Google Cloud Platform (GCP), you must configure the project that hosts it.

Note

If you already have a project that hosts the shared VPC network, review this section to ensure that the project meets all of the requirements to install an OpenShift Container Platform cluster.

Procedure

  1. Create a project to host the shared VPC for your OpenShift Container Platform cluster. See Creating and Managing Projects in the GCP documentation.
  2. Create a service account in the project that hosts your shared VPC. See Creating a service account in the GCP documentation.
  3. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources.

    Note

    While making the service account an Owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable.

    The service account for the project that hosts the shared VPC network requires the following roles:

    • Compute Network User
    • Compute Security Admin
    • Deployment Manager Editor
    • DNS Administrator
    • Security Admin
    • Network Management Admin
  4. Set up the shared VPC. See Setting up Shared VPC in the GCP documentation.

1.9.4.1. Configuring DNS for GCP

To install OpenShift Container Platform, the Google Cloud Platform (GCP) account you use must have a dedicated public hosted zone in the project that hosts the shared VPC that you install the cluster into. This zone must be authoritative for the domain. The DNS service provides cluster DNS resolution and name lookup for external connections to the cluster.

Procedure

  1. Identify your domain, or subdomain, and registrar. You can transfer an existing domain and registrar or obtain a new one through GCP or another source.

    Note

    If you purchase a new domain, it can take time for the relevant DNS changes to propagate. For more information about purchasing domains through Google, see Google Domains.

  2. Create a public hosted zone for your domain or subdomain in your GCP project. See Creating public zones in the GCP documentation.

    Use an appropriate root domain, such as openshiftcorp.com, or subdomain, such as clusters.openshiftcorp.com.

  3. Extract the new authoritative name servers from the hosted zone records. See Look up your Cloud DNS name servers in the GCP documentation.

    You typically have four name servers.

  4. Update the registrar records for the name servers that your domain uses. For example, if you registered your domain to Google Domains, see the following topic in the Google Domains Help: How to switch to custom name servers.
  5. If you migrated your root domain to Google Cloud DNS, migrate your DNS records. See Migrating to Cloud DNS in the GCP documentation.
  6. If you use a subdomain, follow your company’s procedures to add its delegation records to the parent domain. This process might include a request to your company’s IT department or the division that controls the root domain and DNS services for your company.

1.9.4.2. Creating a VPC in GCP

You must create a VPC in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. You can customize the VPC to meet your requirements. One way to create the VPC is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.

Procedure

  1. Copy the template from the Deployment Manager template for the VPC section of this topic and save it as 01_vpc.py on your computer. This template describes the VPC that your cluster requires.
  2. Export the following variables required by the resource definition:

    1. Export the control plane CIDR:

      $ export MASTER_SUBNET_CIDR='10.0.0.0/19'
    2. Export the compute CIDR:

      $ export WORKER_SUBNET_CIDR='10.0.32.0/19'
    3. Export the region to deploy the VPC network and cluster to:

      $ export REGION='<region>'
  3. Export the variable for the ID of the project that hosts the shared VPC:

    $ export HOST_PROJECT=<host_project>
  4. Export the variable for the email of the service account that belongs to host project:

    $ export HOST_PROJECT_ACCOUNT=<host_service_account_email>
  5. Create a 01_vpc.yaml resource definition file:

    $ cat <<EOF >01_vpc.yaml
    imports:
    - path: 01_vpc.py
    
    resources:
    - name: cluster-vpc
      type: 01_vpc.py
      properties:
        infra_id: '<prefix>' 1
        region: '${REGION}' 2
        master_subnet_cidr: '${MASTER_SUBNET_CIDR}' 3
        worker_subnet_cidr: '${WORKER_SUBNET_CIDR}' 4
    EOF
    1
    infra_id is the prefix of the network name.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    master_subnet_cidr is the CIDR for the master subnet, for example 10.0.0.0/19.
    4
    worker_subnet_cidr is the CIDR for the worker subnet, for example 10.0.32.0/19.
  6. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create <vpc_deployment_name> --config 01_vpc.yaml --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} 1
    1
    For <vpc_deployment_name>, specify the name of the VPC to deploy.
  7. Export the VPC variable that other components require:

    1. Export the name of the host project network:

      $ export HOST_PROJECT_NETWORK=<vpc_network>
    2. Export the name of the host project control plane subnet:

      $ export HOST_PROJECT_CONTROL_SUBNET=<control_plane_subnet>
    3. Export the name of the host project compute subnet:

      $ export HOST_PROJECT_COMPUTE_SUBNET=<compute_subnet>
1.9.4.2.1. Deployment Manager template for the VPC

You can use the following Deployment Manager template to deploy the VPC that you need for your OpenShift Container Platform cluster:

Example 1.5. 01_vpc.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-network',
        'type': 'compute.v1.network',
        'properties': {
            'region': context.properties['region'],
            'autoCreateSubnetworks': False
        }
    }, {
        'name': context.properties['infra_id'] + '-master-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['master_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['worker_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-router',
        'type': 'compute.v1.router',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'nats': [{
                'name': context.properties['infra_id'] + '-nat-master',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 7168,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-master-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }, {
                'name': context.properties['infra_id'] + '-nat-worker',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 512,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-worker-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }]
        }
    }]

    return {'resources': resources}

1.9.5. Creating the installation files for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must generate the files that the installation program needs to deploy your cluster and modify them so that the cluster creates only the machines that it will use. You generate and customize the install-config.yaml file, Kubernetes manifests, and Ignition config files.

1.9.5.1. Manually creating the installation configuration file

For installations of OpenShift Container Platform that use user-provisioned infrastructure, you manually generate your installation configuration file.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the access token for your cluster.

Procedure

  1. Create an installation directory to store your required installation assets in:

    $ mkdir <installation_directory>
    Important

    You must create a directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

  2. Customize the following install-config.yaml file template and save it in the <installation_directory>.

    Note

    You must name this configuration file install-config.yaml.

  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the next step of the installation process. You must back it up now.

1.9.5.2. Sample customized install-config.yaml file for GCP

You can customize the install-config.yaml file to specify more details about your OpenShift Container Platform cluster’s platform or modify the values of the required parameters.

Important

This sample YAML file is provided for reference only. You must obtain your install-config.yaml file by using the installation program and modify it.

apiVersion: v1
baseDomain: example.com 1
controlPlane: 2
  hyperthreading: Enabled 3 4
  name: master
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 3
compute: 5
- hyperthreading: Enabled 6
  name: worker
  platform:
    gcp:
      type: n2-standard-4
      zones:
      - us-central1-a
      - us-central1-c
  replicas: 0
metadata:
  name: test-cluster
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OpenShiftSDN
  serviceNetwork:
  - 172.30.0.0/16
platform:
  gcp:
    ProjectID: openshift-production
    region: us-central1 7
pullSecret: '{"auths": ...}'
fips: false 8
sshKey: ssh-ed25519 AAAA... 9
publish: Internal 10
1
Specify the public DNS on the host project.
2 5
If you do not provide these parameters and values, the installation program provides the default value.
3 6
The controlPlane section is a single mapping, but the compute section is a sequence of mappings. To meet the requirements of the different data structures, the first line of the compute section must begin with a hyphen, -, and the first line of the controlPlane section must not. Although both sections currently define a single machine pool, it is possible that future versions of OpenShift Container Platform will support defining multiple compute pools during installation. Only one control plane pool is used.
4
Whether to enable or disable simultaneous multithreading, or hyperthreading. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores. You can disable it by setting the parameter value to Disabled. If you disable simultaneous multithreading in some cluster machines, you must disable it in all cluster machines.
Important

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance. Use larger machine types, such as n1-standard-8, for your machines if you disable simultaneous multithreading.

7
Specify the region that your VPC network is in.
8
Whether to enable or disable FIPS mode. By default, FIPS mode is not enabled. If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.
9
You can optionally provide the sshKey value that you use to access the machines in your cluster.
Note

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

10
How to publish the user-facing endpoints of your cluster. Set publish to Internal to deploy a private cluster, which cannot be accessed from the internet. The default value is External. To use a shared VPC in a cluster that uses infrastructure that you provision, you must set publish to Internal. The installation program will no longer be able to access the public DNS zone for the base domain in the host project.

1.9.5.3. Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the Internet and instead have an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites

  • An existing install-config.yaml file.
  • Review the sites that your cluster requires access to and determine whether any need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. Add sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

    Note

    The Proxy object status.noProxy field is populated with the values of the networking.machineNetwork[].cidr, networking.clusterNetwork[].cidr, and networking.serviceNetwork[] fields from your installation configuration.

    For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the Proxy object status.noProxy field is also populated with the instance metadata endpoint (169.254.169.254).

Procedure

  1. Edit your install-config.yaml file and add the proxy settings. For example:

    apiVersion: v1
    baseDomain: my.domain.com
    proxy:
      httpProxy: http://<username>:<pswd>@<ip>:<port> 1
      httpsProxy: http://<username>:<pswd>@<ip>:<port> 2
      noProxy: example.com 3
    additionalTrustBundle: | 4
        -----BEGIN CERTIFICATE-----
        <MY_TRUSTED_CA_CERT>
        -----END CERTIFICATE-----
    ...
    1
    A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpProxy value.
    2
    A proxy URL to use for creating HTTPS connections outside the cluster. If this field is not specified, then httpProxy is used for both HTTP and HTTPS connections. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpsProxy value.
    3
    A comma-separated list of destination domain names, domains, IP addresses, or other network CIDRs to exclude proxying. Preface a domain with . to include all subdomains of that domain. Use * to bypass proxy for all destinations.
    4
    If provided, the installation program generates a ConfigMap that is named user-ca-bundle in the openshift-config namespace that contains one or more additional CA certificates that are required for proxying HTTPS connections. The Cluster Network Operator then creates a trusted-ca-bundle ConfigMap that merges these contents with the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle, and this ConfigMap is referenced in the Proxy object’s trustedCA field. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the RHCOS trust bundle. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must provide the MITM CA certificate.
    Note

    The installation program does not support the proxy readinessEndpoints field.

  2. Save the file and reference it when installing OpenShift Container Platform.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Note

Only the Proxy object named cluster is supported, and no additional proxies can be created.

1.9.5.4. Creating the Kubernetes manifest and Ignition config files

Because you must modify some cluster definition files and manually start the cluster machines, you must generate the Kubernetes manifest and Ignition config files that the cluster needs to make its machines.

Important

The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

Prerequisites

  • Obtain the OpenShift Container Platform installation program.
  • Create the install-config.yaml installation configuration file.

Procedure

  1. Generate the Kubernetes manifests for the cluster:

    $ ./openshift-install create manifests --dir=<installation_directory> 1

    Example output

    INFO Consuming Install Config from target directory
    WARNING Making control-plane schedulable by setting MastersSchedulable to true for Scheduler cluster settings

    1
    For <installation_directory>, specify the installation directory that contains the install-config.yaml file you created.

    Because you create your own compute machines later in the installation process, you can safely ignore this warning.

  2. Remove the Kubernetes manifest files that define the control plane machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_master-machines-*.yaml

    By removing these files, you prevent the cluster from automatically generating control plane machines.

  3. Remove the Kubernetes manifest files that define the worker machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_worker-machineset-*.yaml

    Because you create and manage the worker machines yourself, you do not need to initialize these machines.

  4. Modify the <installation_directory>/manifests/cluster-scheduler-02-config.yml Kubernetes manifest file to prevent pods from being scheduled on the control plane machines:

    1. Open the <installation_directory>/manifests/cluster-scheduler-02-config.yml file.
    2. Locate the mastersSchedulable parameter and set its value to False.
    3. Save and exit the file.
  5. Remove the privateZone sections from the <installation_directory>/manifests/cluster-dns-02-config.yml DNS configuration file:

    apiVersion: config.openshift.io/v1
    kind: DNS
    metadata:
      creationTimestamp: null
      name: cluster
    spec:
      baseDomain: example.openshift.com
      privateZone: 1
        id: mycluster-100419-private-zone
    status: {}
    1
    Remove this section completely.
  6. Configure the cloud provider for your VPC.

    1. Open the <installation_directory>/manifests/cloud-provider-config.yaml file.
    2. Add the network-project-id parameter and set its value to the ID of project that hosts the shared VPC network.
    3. Add the network-name parameter and set its value to the name of the shared VPC network that hosts the OpenShift Container Platform cluster.
    4. Replace the value of the subnetwork-name parameter with the value of the shared VPC subnet that hosts your compute machines.

    The contents of the <installation_directory>/manifests/cloud-provider-config.yaml resemble the following example:

    config: |+
      [global]
      project-id      = example-project
      regional        = true
      multizone       = true
      node-tags       = opensh-ptzzx-master
      node-tags       = opensh-ptzzx-worker
      node-instance-prefix = opensh-ptzzx
      external-instance-groups-prefix = opensh-ptzzx
      network-project-id = example-shared-vpc
      network-name    = example-network
      subnetwork-name = example-worker-subnet
  7. If you deploy a cluster that is not on a private network, open the <installation_directory>/manifests/cluster-ingress-default-ingresscontroller.yaml file and replace the value of the scope parameter with External. The contents of the file resemble the following example:

    apiVersion: operator.openshift.io/v1
    kind: IngressController
    metadata:
      creationTimestamp: null
      name: default
      namespace: openshift-ingress-operator
    spec:
      endpointPublishingStrategy:
        loadBalancer:
          scope: External
        type: LoadBalancerService
    status:
      availableReplicas: 0
      domain: ''
      selector: ''
  8. Obtain the Ignition config files:

    $ ./openshift-install create ignition-configs --dir=<installation_directory> 1
    1
    For <installation_directory>, specify the same installation directory.

    The following files are generated in the directory:

    .
    ├── auth
    │   ├── kubeadmin-password
    │   └── kubeconfig
    ├── bootstrap.ign
    ├── master.ign
    ├── metadata.json
    └── worker.ign

1.9.6. Exporting common variables

1.9.6.1. Extracting the infrastructure name

Additional resources

The Ignition config files contain a unique cluster identifier that you can use to uniquely identify your cluster in Google Cloud Platform (GCP). The provided Deployment Manager templates contain references to this infrastructure name, so you must extract it.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  • To extract and view the infrastructure name from the Ignition config file metadata, run the following command:

    $ jq -r .infraID <installation_directory>/metadata.json 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.

    Example output

    openshift-vw9j6 1

    1
    The output of this command is your cluster name and a random string.

1.9.6.2. Exporting common variables for Deployment Manager templates

You must export a common set of variables that are used with the provided Deployment Manager templates used to assist in completing a user-provided infrastructure install on Google Cloud Platform (GCP).

Note

Specific Deployment Manager templates can also require additional exported variables, which are detailed in their related procedures.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  1. Export the following common variables to be used by the provided Deployment Manager templates:
$ export BASE_DOMAIN='<base_domain>' 1
$ export BASE_DOMAIN_ZONE_NAME='<base_domain_zone_name>' 2
$ export NETWORK_CIDR='10.0.0.0/16'

$ export KUBECONFIG=<installation_directory>/auth/kubeconfig 3
$ export CLUSTER_NAME=`jq -r .clusterName <installation_directory>/metadata.json`
$ export INFRA_ID=`jq -r .infraID <installation_directory>/metadata.json`
$ export PROJECT_NAME=`jq -r .gcp.projectID <installation_directory>/metadata.json`
1 2
Supply the values for the host project.
3
For <installation_directory>, specify the path to the directory that you stored the installation files in.

1.9.7. Creating load balancers in GCP

You must configure load balancers in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for the internal load balancer section of this topic and save it as 02_lb_int.py on your computer. This template describes the internal load balancing objects that your cluster requires.
  2. For an external cluster, also copy the template from the Deployment Manager template for the external load balancer section of this topic and save it as 02_lb_ext.py on your computer. This template describes the external load balancing objects that your cluster requires.
  3. Export the variables that the deployment template uses:

    1. Export the cluster network location:

      $ export CLUSTER_NETWORK=`gcloud compute networks describe ${HOST_PROJECT_NETWORK} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} --format json | jq -r .selfLink`
    2. Export the control plane subnet location:

      $ export CONTROL_SUBNET=`gcloud compute networks subnets describe ${HOST_PROJECT_CONTROL_SUBNET} --region=${REGION} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} --format json | jq -r .selfLink`
    3. Export the three zones that the cluster uses:

      $ export ZONE_0=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[0] | cut -d "/" -f9`
      $ export ZONE_1=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[1] | cut -d "/" -f9`
      $ export ZONE_2=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[2] | cut -d "/" -f9`
  4. Create a 02_lb.yaml resource definition file:

    • For an internal cluster, run the following command:

      $ cat <<EOF >02_lb.yaml
      imports:
      - path: 02_lb_int.py
      
      resources:
      - name: cluster-lb-int
        type: 02_lb_int.py
        properties:
          cluster_network: '${CLUSTER_NETWORK}' 1
          control_subnet: '${CONTROL_SUBNET}' 2
          infra_id: '${INFRA_ID}' 3
          region: '${REGION}' 4
          zones:
          - '${ZONE_0}'
          - '${ZONE_1}'
          - '${ZONE_2}'
      EOF
      1
      cluster_network is the selfLink URL to the cluster network.
      2
      control_subnet is the selfLink URL to the control subnet.
      3
      infra_id is the INFRA_ID infrastructure name from the extraction step.
      4
      region is the region to deploy the cluster into, for example us-central1.
    • For an external cluster, run the following command:

      $ cat <<EOF >02_lb.yaml
      imports:
      - path: 02_lb_ext.py
      - path: 02_lb_int.py
      resources:
      - name: cluster-lb-ext
        type: 02_lb_ext.py
        properties:
          infra_id: '${INFRA_ID}' 1
          region: '${REGION}' 2
      - name: cluster-lb-int
        type: 02_lb_int.py
        properties:
          cluster_network: '${CLUSTER_NETWORK}' 3
          control_subnet: '${CONTROL_SUBNET}' 4
          infra_id: '${INFRA_ID}' 5
          region: '${REGION}' 6
          zones:
          - '${ZONE_0}'
          - '${ZONE_1}'
          - '${ZONE_2}'
      EOF
      1 5
      infra_id is the INFRA_ID infrastructure name from the extraction step.
      2 6
      region is the region to deploy the cluster into, for example us-central1.
      3
      cluster_network is the selfLink URL to the cluster network.
      4
      control_subnet is the selfLink URL to the control subnet.
  5. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-lb --config 02_lb.yaml
  6. Export the cluster IP address:

    $ export CLUSTER_IP=$(gcloud compute addresses describe ${INFRA_ID}-cluster-ip --region=${REGION} --format json | jq -r .address)
  7. For an external cluster, also export the cluster public IP address:

    $ export CLUSTER_PUBLIC_IP=$(gcloud compute addresses describe ${INFRA_ID}-cluster-public-ip --region=${REGION} --format json | jq -r .address)

1.9.7.1. Deployment Manager template for the external load balancer

You can use the following Deployment Manager template to deploy the external load balancer that you need for your OpenShift Container Platform cluster:

Example 1.6. 02_lb_ext.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-cluster-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        # Refer to docs/dev/kube-apiserver-health-check.md on how to correctly setup health check probe for kube-apiserver
        'name': context.properties['infra_id'] + '-api-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 6080,
            'requestPath': '/readyz'
        }
    }, {
        'name': context.properties['infra_id'] + '-api-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-api-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-api-target-pool.selfLink)',
            'portRange': '6443'
        }
    }]

    return {'resources': resources}

1.9.7.2. Deployment Manager template for the internal load balancer

You can use the following Deployment Manager template to deploy the internal load balancer that you need for your OpenShift Container Platform cluster:

Example 1.7. 02_lb_int.py Deployment Manager template

def GenerateConfig(context):

    backends = []
    for zone in context.properties['zones']:
        backends.append({
            'group': '$(ref.' + context.properties['infra_id'] + '-master-' + zone + '-instance-group' + '.selfLink)'
        })

    resources = [{
        'name': context.properties['infra_id'] + '-cluster-ip',
        'type': 'compute.v1.address',
        'properties': {
            'addressType': 'INTERNAL',
            'region': context.properties['region'],
            'subnetwork': context.properties['control_subnet']
        }
    }, {
        # Refer to docs/dev/kube-apiserver-health-check.md on how to correctly setup health check probe for kube-apiserver
        'name': context.properties['infra_id'] + '-api-internal-health-check',
        'type': 'compute.v1.healthCheck',
        'properties': {
            'httpsHealthCheck': {
                'port': 6443,
                'requestPath': '/readyz'
            },
            'type': "HTTPS"
        }
    }, {
        'name': context.properties['infra_id'] + '-api-internal-backend-service',
        'type': 'compute.v1.regionBackendService',
        'properties': {
            'backends': backends,
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-internal-health-check.selfLink)'],
            'loadBalancingScheme': 'INTERNAL',
            'region': context.properties['region'],
            'protocol': 'TCP',
            'timeoutSec': 120
        }
    }, {
        'name': context.properties['infra_id'] + '-api-internal-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'backendService': '$(ref.' + context.properties['infra_id'] + '-api-internal-backend-service.selfLink)',
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-ip.selfLink)',
            'loadBalancingScheme': 'INTERNAL',
            'ports': ['6443','22623'],
            'region': context.properties['region'],
            'subnetwork': context.properties['control_subnet']
        }
    }]

    for zone in context.properties['zones']:
        resources.append({
            'name': context.properties['infra_id'] + '-master-' + zone + '-instance-group',
            'type': 'compute.v1.instanceGroup',
            'properties': {
                'namedPorts': [
                    {
                        'name': 'ignition',
                        'port': 22623
                    }, {
                        'name': 'https',
                        'port': 6443
                    }
                ],
                'network': context.properties['cluster_network'],
                'zone': zone
            }
        })

    return {'resources': resources}

1.9.8. Creating a private DNS zone in GCP

You must configure a private DNS zone in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create this component is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for the private DNS section of this topic and save it as 02_dns.py on your computer. This template describes the private DNS objects that your cluster requires.
  2. Create a 02_dns.yaml resource definition file:

    $ cat <<EOF >02_dns.yaml
    imports:
    - path: 02_dns.py
    
    resources:
    - name: cluster-dns
      type: 02_dns.py
      properties:
        infra_id: '${INFRA_ID}' 1
        cluster_domain: '${CLUSTER_NAME}.${BASE_DOMAIN}' 2
        cluster_network: '${CLUSTER_NETWORK}' 3
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    cluster_domain is the domain for the cluster, for example openshift.example.com.
    3
    cluster_network is the selfLink URL to the cluster network.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-dns --config 02_dns.yaml --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
  4. The templates do not create DNS entries due to limitations of Deployment Manager, so you must create them manually:

    1. Add the internal DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api-int.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    2. For an external cluster, also add the external DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} dns record-sets transaction add ${CLUSTER_PUBLIC_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}

1.9.8.1. Deployment Manager template for the private DNS

You can use the following Deployment Manager template to deploy the private DNS that you need for your OpenShift Container Platform cluster:

Example 1.8. 02_dns.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-private-zone',
        'type': 'dns.v1.managedZone',
        'properties': {
            'description': '',
            'dnsName': context.properties['cluster_domain'] + '.',
            'visibility': 'private',
            'privateVisibilityConfig': {
                'networks': [{
                    'networkUrl': context.properties['cluster_network']
                }]
            }
        }
    }]

    return {'resources': resources}

1.9.9. Creating firewall rules in GCP

You must create firewall rules in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for firewall rules section of this topic and save it as 03_firewall.py on your computer. This template describes the security groups that your cluster requires.
  2. Create a 03_firewall.yaml resource definition file:

    $ cat <<EOF >03_firewall.yaml
    imports:
    - path: 03_firewall.py
    
    resources:
    - name: cluster-firewall
      type: 03_firewall.py
      properties:
        allowed_external_cidr: '0.0.0.0/0' 1
        infra_id: '${INFRA_ID}' 2
        cluster_network: '${CLUSTER_NETWORK}' 3
        network_cidr: '${NETWORK_CIDR}' 4
    EOF
    1
    allowed_external_cidr is the CIDR range that can access the cluster API and SSH to the bootstrap host. For an internal cluster, set this value to ${NETWORK_CIDR}.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    cluster_network is the selfLink URL to the cluster network.
    4
    network_cidr is the CIDR of the VPC network, for example 10.0.0.0/16.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-firewall --config 03_firewall.yaml --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}

1.9.9.1. Deployment Manager template for firewall rules

You can use the following Deployment Manager template to deploy the firewall rues that you need for your OpenShift Container Platform cluster:

Example 1.9. 03_firewall.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-bootstrap-in-ssh',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges': [context.properties['allowed_external_cidr']],
            'targetTags': [context.properties['infra_id'] + '-bootstrap']
        }
    }, {
        'name': context.properties['infra_id'] + '-api',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6443']
            }],
            'sourceRanges': [context.properties['allowed_external_cidr']],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-health-checks',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6080', '6443', '22624']
            }],
            'sourceRanges': ['35.191.0.0/16', '130.211.0.0/22', '209.85.152.0/22', '209.85.204.0/22'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-etcd',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['2379-2380']
            }],
            'sourceTags': [context.properties['infra_id'] + '-master'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-control-plane',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['10257']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10259']
            },{
                'IPProtocol': 'tcp',
                'ports': ['22623']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-network',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'icmp'
            },{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges': [context.properties['network_cidr']],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-cluster',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'udp',
                'ports': ['4789', '6081']
            },{
                'IPProtocol': 'tcp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'udp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10250']
            },{
                'IPProtocol': 'tcp',
                'ports': ['30000-32767']
            },{
                'IPProtocol': 'udp',
                'ports': ['30000-32767']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }]

    return {'resources': resources}

1.9.10. Creating IAM roles in GCP

You must create IAM roles in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for IAM roles section of this topic and save it as 03_iam.py on your computer. This template describes the IAM roles that your cluster requires.
  2. Create a 03_iam.yaml resource definition file:

    $ cat <<EOF >03_iam.yaml
    imports:
    - path: 03_iam.py
    resources:
    - name: cluster-iam
      type: 03_iam.py
      properties:
        infra_id: '${INFRA_ID}' 1
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-iam --config 03_iam.yaml
  4. Export the variable for the master service account:

    $ export MASTER_SA=`gcloud iam service-accounts list | grep "^${INFRA_ID}-master-node " | awk '{print $2}'`
  5. Export the variable for the master service account:

    $ export WORKER_SA=`gcloud iam service-accounts list | grep "^${INFRA_ID}-worker-node " | awk '{print $2}'`
  6. Assign the permissions that the installation program requires to the service accounts for the subnets that host the control plane and compute subnets:

    1. Grant the networkViewer role of the project that hosts your shared VPC to the master service account:

      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} projects add-iam-policy-binding ${HOST_PROJECT} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkViewer"
    2. Grant the networkUser role to the master service account for the control plane subnet:

      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} compute networks subnets add-iam-policy-binding "${HOST_PROJECT_CONTROL_SUBNET}" --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkUser" --region ${REGION}
    3. Grant the networkUser role to the worker service account for the control plane subnet:

      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} compute networks subnets add-iam-policy-binding "${HOST_PROJECT_CONTROL_SUBNET}" --member "serviceAccount:${WORKER_SA}" --role "roles/compute.networkUser" --region ${REGION}
    4. Grant the networkUser role to the master service account for the compute subnet:

      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} compute networks subnets add-iam-policy-binding "${HOST_PROJECT_COMPUTE_SUBNET}" --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkUser" --region ${REGION}
    5. Grant the networkUser role to the worker service account for the compute subnet:

      $ gcloud --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT} compute networks subnets add-iam-policy-binding "${HOST_PROJECT_COMPUTE_SUBNET}" --member "serviceAccount:${WORKER_SA}" --role "roles/compute.networkUser" --region ${REGION}
  7. The templates do not create the policy bindings due to limitations of Deployment Manager, so you must create them manually:

    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.instanceAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.securityAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/iam.serviceAccountUser"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/storage.admin"
    
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/compute.viewer"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/storage.admin"
  8. Create a service account key and store it locally for later use:

    $ gcloud iam service-accounts keys create service-account-key.json --iam-account=${MASTER_SA}

1.9.10.1. Deployment Manager template for IAM roles

You can use the following Deployment Manager template to deploy the IAM roles that you need for your OpenShift Container Platform cluster:

Example 1.10. 03_iam.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-master-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-m',
            'displayName': context.properties['infra_id'] + '-master-node'
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-w',
            'displayName': context.properties['infra_id'] + '-worker-node'
        }
    }]

    return {'resources': resources}

1.9.11. Creating the RHCOS cluster image for the GCP infrastructure

You must use a valid Red Hat Enterprise Linux CoreOS (RHCOS) image for Google Cloud Platform (GCP) for your OpenShift Container Platform nodes.

Procedure

  1. Obtain the RHCOS image from the Product Downloads page on the Red Hat customer portal or the RHCOS image mirror page.

    Important

    The RHCOS images might not change with every release of OpenShift Container Platform. You must download an image with the highest version that is less than or equal to the OpenShift Container Platform version that you install. Use the image version that matches your OpenShift Container Platform version if it is available.

    The file name contains the OpenShift Container Platform version number in the format rhcos-<version>-gcp.tar.

  2. Export the following variable:

    $ export IMAGE_SOURCE=<downloaded_image_file_path>
  3. Create the cluster image:

    $ gcloud compute images create "${INFRA_ID}-rhcos-image" \
        --source-uri="${IMAGE_SOURCE}"

1.9.12. Creating the bootstrap machine in GCP

You must create the bootstrap machine in Google Cloud Platform (GCP) to use during OpenShift Container Platform cluster initialization. One way to create this machine is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your bootstrap machine, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.

Procedure

  1. Copy the template from the Deployment Manager template for the bootstrap machine section of this topic and save it as 04_bootstrap.py on your computer. This template describes the bootstrap machine that your cluster requires.
  2. Export the variables that the deployment template uses:

    1. Export the control plane subnet location:
    2. Export the location of the Red Hat Enterprise Linux CoreOS (RHCOS) image that the installation program requires:

      $ export CLUSTER_IMAGE=`gcloud compute images describe ${INFRA_ID}-rhcos-image --format json | jq -r .selfLink`
  3. Create a bucket and upload the bootstrap.ign file:

    $ gsutil mb gs://${INFRA_ID}-bootstrap-ignition
    $ gsutil cp bootstrap.ign gs://${INFRA_ID}-bootstrap-ignition/
  4. Create a signed URL for the bootstrap instance to use to access the Ignition config. Export the URL from the output as a variable:

    $ export BOOTSTRAP_IGN=`gsutil signurl -d 1h service-account-key.json \
        gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign | grep "^gs:" | awk '{print $5}'`
  5. Create a 04_bootstrap.yaml resource definition file:

    $ cat <<EOF >04_bootstrap.yaml
    imports:
    - path: 04_bootstrap.py
    
    resources:
    - name: cluster-bootstrap
      type: 04_bootstrap.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
        zone: '${ZONE_0}' 3
    
        cluster_network: '${CLUSTER_NETWORK}' 4
        control_subnet: '${CONTROL_SUBNET}' 5
        image: '${CLUSTER_IMAGE}' 6
        machine_type: 'n1-standard-4' 7
        root_volume_size: '128' 8
    
        bootstrap_ign: '${BOOTSTRAP_IGN}' 9
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    zone is the zone to deploy the bootstrap instance into, for example us-central1-b.
    4
    cluster_network is the selfLink URL to the cluster network.
    5
    control_subnet is the selfLink URL to the control subnet.
    6
    image is the selfLink URL to the RHCOS image.
    7
    machine_type is the machine type of the instance, for example n1-standard-4.
    8
    bootstrap_ign is the URL output when creating a signed URL above.
  6. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-bootstrap --config 04_bootstrap.yaml
  7. Add the bootstrap instance to the internal load balancer instance group:

    $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-bootstrap-instance-group --zone=${ZONE_0} --instances=${INFRA_ID}-bootstrap
  8. Add the bootstrap instance group to the internal load balancer backend service:

    $ gcloud compute backend-services add-backend ${INFRA_ID}-api-internal-backend-service --region=${REGION} --instance-group=${INFRA_ID}-bootstrap-instance-group --instance-group-zone=${ZONE_0}

1.9.12.1. Deployment Manager template for the bootstrap machine

You can use the following Deployment Manager template to deploy the bootstrap machine that you need for your OpenShift Container Platform cluster:

Example 1.11. 04_bootstrap.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-bootstrap-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': '{"ignition":{"config":{"replace":{"source":"' + context.properties['bootstrap_ign'] + '"}},"version":"3.1.0"}}',
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet'],
                'accessConfigs': [{
                    'natIP': '$(ref.' + context.properties['infra_id'] + '-bootstrap-public-ip.address)'
                }]
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                    context.properties['infra_id'] + '-bootstrap'
                ]
            },
            'zone': context.properties['zone']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap-instance-group',
        'type': 'compute.v1.instanceGroup',
        'properties': {
            'namedPorts': [
                {
                    'name': 'ignition',
                    'port': 22623
                }, {
                    'name': 'https',
                    'port': 6443
                }
            ],
            'network': context.properties['cluster_network'],
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.9.13. Creating the control plane machines in GCP

You must create the control plane machines in Google Cloud Platform (GCP) for your cluster to use. One way to create these machines is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your control plane machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.

Procedure

  1. Copy the template from the Deployment Manager template for control plane machines section of this topic and save it as 05_control_plane.py on your computer. This template describes the control plane machines that your cluster requires.
  2. Export the following variables needed by the resource definition:

    $ export MASTER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-master-node " | awk '{print $2}'`
    $ export MASTER_IGNITION=`cat master.ign`
  3. Create a 05_control_plane.yaml resource definition file:

    $ cat <<EOF >05_control_plane.yaml
    imports:
    - path: 05_control_plane.py
    
    resources:
    - name: cluster-control-plane
      type: 05_control_plane.py
      properties:
        infra_id: '${INFRA_ID}' 1
        zones: 2
        - '${ZONE_0}'
        - '${ZONE_1}'
        - '${ZONE_2}'
    
        control_subnet: '${CONTROL_SUBNET}' 3
        image: '${CLUSTER_IMAGE}' 4
        machine_type: 'n1-standard-4' 5
        root_volume_size: '128'
        service_account_email: '${MASTER_SERVICE_ACCOUNT_EMAIL}' 6
    
        ignition: '${MASTER_IGNITION}' 7
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    zones are the zones to deploy the control plane instances into, for example us-central1-a, us-central1-b, and us-central1-c.
    3
    control_subnet is the selfLink URL to the control subnet.
    4
    image is the selfLink URL to the RHCOS image.
    5
    machine_type is the machine type of the instance, for example n1-standard-4.
    6
    service_account_email is the email address for the master service account that you created.
    7
    ignition is the contents of the master.ign file.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-control-plane --config 05_control_plane.yaml
  5. The templates do not manage DNS entries due to limitations of Deployment Manager, so you must add the etcd entries manually:

    $ export MASTER0_IP=`gcloud compute instances describe ${INFRA_ID}-m-0 --zone ${ZONE_0} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER1_IP=`gcloud compute instances describe ${INFRA_ID}-m-1 --zone ${ZONE_1} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER2_IP=`gcloud compute instances describe ${INFRA_ID}-m-2 --zone ${ZONE_2} --format json | jq -r .networkInterfaces[0].networkIP`
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    $ gcloud dns record-sets transaction add ${MASTER0_IP} --name etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    $ gcloud dns record-sets transaction add ${MASTER1_IP} --name etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    $ gcloud dns record-sets transaction add ${MASTER2_IP} --name etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    $ gcloud dns record-sets transaction add \
      "0 10 2380 etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      --name _etcd-server-ssl._tcp.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type SRV --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
  6. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the control plane machines manually.

    • For an internal cluster, use the following commands:

      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_0}-instance-group --zone=${ZONE_0} --instances=${INFRA_ID}-m-0
      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_1}-instance-group --zone=${ZONE_1} --instances=${INFRA_ID}-m-1
      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_2}-instance-group --zone=${ZONE_2} --instances=${INFRA_ID}-m-2
    • For an external cluster, use the following commands:

      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_0}-instance-group --zone=${ZONE_0} --instances=${INFRA_ID}-m-0
      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_1}-instance-group --zone=${ZONE_1} --instances=${INFRA_ID}-m-1
      $ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_2}-instance-group --zone=${ZONE_2} --instances=${INFRA_ID}-m-2
      
      $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
      $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
      $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2

1.9.13.1. Deployment Manager template for control plane machines

You can use the following Deployment Mananger template to deploy the control plane machines that you need for your OpenShift Container Platform cluster:

Example 1.12. 05_control_plane.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-master-0',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][0] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][0] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][0]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-1',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][1] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][1] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][1]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-2',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][2] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][2] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][2]
        }
    }]

    return {'resources': resources}

1.9.14. Wait for bootstrap completion and remove bootstrap resources in GCP

After you create all of the required infrastructure in Google Cloud Platform (GCP), wait for the bootstrap process to complete on the machines that you provisioned by using the Ignition config files that you generated with the installation program.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Change to the directory that contains the installation program and run the following command:

    $ ./openshift-install wait-for bootstrap-complete --dir=<installation_directory> \ 1
        --log-level info 2
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2
    To view different installation details, specify warn, debug, or error instead of info.

    If the command exits without a FATAL warning, your production control plane has initialized.

  2. Delete the bootstrap resources:

    $ gcloud compute backend-services remove-backend ${INFRA_ID}-api-internal-backend-service --region=${REGION} --instance-group=${INFRA_ID}-bootstrap-instance-group --instance-group-zone=${ZONE_0}
    $ gsutil rm gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign
    $ gsutil rb gs://${INFRA_ID}-bootstrap-ignition
    $ gcloud deployment-manager deployments delete -q ${INFRA_ID}-bootstrap

1.9.15. Creating additional worker machines in GCP

You can create worker machines in Google Cloud Platform (GCP) for your cluster to use by launching individual instances discretely or by automated processes outside the cluster, such as Auto Scaling Groups. You can also take advantage of the built-in cluster scaling mechanisms and the machine API in OpenShift Container Platform.

In this example, you manually launch one instance by using the Deployment Manager template. Additional instances can be launched by including additional resources of type 06_worker.py in the file.

Note

If you do not use the provided Deployment Manager template to create your worker machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Copy the template from the Deployment Manager template for worker machines section of this topic and save it as 06_worker.py on your computer. This template describes the worker machines that your cluster requires.
  2. Export the variables that the resource definition uses.

    1. Export the subnet that hosts the compute machines:

      $ export COMPUTE_SUBNET=$(gcloud compute networks subnets describe ${HOST_PROJECT_COMPUTE_SUBNET} --region=${REGION} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} --format json | jq -r .selfLink)`
    2. Export the email address for your service account:

      $ export WORKER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-worker-node " | awk '{print $2}'`
    3. Export the location of the compute machine Ignition config file:

      $ export WORKER_IGNITION=`cat worker.ign`
  3. Create a 06_worker.yaml resource definition file:

    $ cat <<EOF >06_worker.yaml
    imports:
    - path: 06_worker.py
    
    resources:
    - name: 'w-a-0' 1
      type: 06_worker.py
      properties:
        infra_id: '${INFRA_ID}' 2
        zone: '${ZONE_0}' 3
    
        compute_subnet: '${COMPUTE_SUBNET}' 4
        image: '${CLUSTER_IMAGE}' 5
        machine_type: 'n1-standard-4' 6
        root_volume_size: '128'
        service_account_email: '${WORKER_SERVICE_ACCOUNT_EMAIL}' 7
    
        ignition: '${WORKER_IGNITION}' 8
    EOF
    1
    name is the name of the worker machine, for example w-a-0.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    zone is the zone to deploy the worker machine into, for example us-central1-a.
    4
    compute_subnet is the selfLink URL to the compute subnet.
    5
    image is the selfLink URL to the RHCOS image.
    6
    machine_type is the machine type of the instance, for example n1-standard-4.
    7
    service_account_email is the email address for the worker service account that you created.
    8
    ignition is the contents of the worker.ign file.
  4. Optional: If you want to launch additional instances, include additional resources of type 06_worker.py in your 06_worker.yaml resource definition file.
  5. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-worker --config 06_worker.yaml

1.9.15.1. Deployment Manager template for worker machines

You can use the following Deloyment Manager template to deploy the worker machines that you need for your OpenShift Container Platform cluster:

Example 1.13. 06_worker.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-' + context.env['name'],
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['compute_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-worker',
                ]
            },
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.9.16. Installing the CLI by downloading the binary

You can install the OpenShift CLI (oc) in order to interact with OpenShift Container Platform from a command-line interface. You can install oc on Linux, Windows, or macOS.

Important

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.5. Download and install the new version of oc.

1.9.16.1. Installing the CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Linux from the drop-down menu and click Download command-line tools.
  4. Unpack the archive:

    $ tar xvzf <file>
  5. Place the oc binary in a directory that is on your PATH.

    To check your PATH, execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.9.16.2. Installing the CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select Windows from the drop-down menu and click Download command-line tools.
  4. Unzip the archive with a ZIP program.
  5. Move the oc binary to a directory that is on your PATH.

    To check your PATH, open the command prompt and execute the following command:

    C:\> path

After you install the CLI, it is available using the oc command:

C:\> oc <command>

1.9.16.3. Installing the CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

  1. Navigate to the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site.
  2. Select your infrastructure provider, and, if applicable, your installation type.
  3. In the Command-line interface section, select MacOS from the drop-down menu and click Download command-line tools.
  4. Unpack and unzip the archive.
  5. Move the oc binary to a directory on your PATH.

    To check your PATH, open a terminal and execute the following command:

    $ echo $PATH

After you install the CLI, it is available using the oc command:

$ oc <command>

1.9.17. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.9.18. Approving the CSRs for your machines

When you add machines to a cluster, two pending certificate signing requests (CSRs) are generated for each machine that you added. You must confirm that these CSRs are approved or, if necessary, approve them yourself.

Prerequisites

  • You added machines to your cluster.

Procedure

  1. Confirm that the cluster recognizes the machines:

    $ oc get nodes

    Example output

    NAME      STATUS    ROLES   AGE  VERSION
    master-0  Ready     master  63m  v1.19.0
    master-1  Ready     master  63m  v1.19.0
    master-2  Ready     master  64m  v1.19.0
    worker-0  NotReady  worker  76s  v1.19.0
    worker-1  NotReady  worker  70s  v1.19.0

    The output lists all of the machines that you created.

  2. Review the pending CSRs and ensure that you see a client and server request with the Pending or Approved status for each machine that you added to the cluster:

    $ oc get csr

    Example output

    NAME        AGE     REQUESTOR                                                                   CONDITION
    csr-8b2br   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending 1
    csr-8vnps   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending
    csr-bfd72   5m26s   system:node:ip-10-0-50-126.us-east-2.compute.internal                       Pending 2
    csr-c57lv   5m26s   system:node:ip-10-0-95-157.us-east-2.compute.internal                       Pending
    ...

    1
    A client request CSR.
    2
    A server request CSR.

    In this example, two machines are joining the cluster. You might see more approved CSRs in the list.

  3. If the CSRs were not approved, after all of the pending CSRs for the machines you added are in Pending status, approve the CSRs for your cluster machines:

    Note

    Because the CSRs rotate automatically, approve your CSRs within an hour of adding the machines to the cluster. If you do not approve them within an hour, the certificates will rotate, and more than two certificates will be present for each node. You must approve all of these certificates. After you approve the initial CSRs, the subsequent node client CSRs are automatically approved by the cluster kube-controller-manager. You must implement a method of automatically approving the kubelet serving certificate requests.

    • To approve them individually, run the following command for each valid CSR:

      $ oc adm certificate approve <csr_name> 1
      1
      <csr_name> is the name of a CSR from the list of current CSRs.
    • To approve all pending CSRs, run the following command:

      $ oc get csr -o go-template='{{range .items}}{{if not .status}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}' | xargs oc adm certificate approve

Additional information

1.9.19. Adding the ingress DNS records

If you removed the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs, you must manually create DNS records that point at the ingress load balancer. You can create either a wildcard *.apps.{baseDomain}. or specific records. You can use A, CNAME, and other records per your requirements.

Prerequisites

  • Configure a GCP account.
  • Remove the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.
  • Create the worker machines.

Procedure

  1. Wait for the Ingress router to create a load balancer and populate the EXTERNAL-IP field:

    $ oc -n openshift-ingress get service router-default

    Example output

    NAME             TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)                      AGE
    router-default   LoadBalancer   172.30.18.154   35.233.157.184   80:32288/TCP,443:31215/TCP   98

  2. Add the A record to your zones:

    • To use A records:

      1. Export the variable for the router IP address:

        $ export ROUTER_IP=`oc -n openshift-ingress get service router-default --no-headers | awk '{print $4}'`
      2. Add the A record to the private zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      3. For an external cluster, also add the A record to the public zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    • To add explicit domains instead of using a wildcard, create entries for each of the cluster’s current routes:

      $ oc get --all-namespaces -o jsonpath='{range .items[*]}{range .status.ingress[*]}{.host}{"\n"}{end}{end}' routes

      Example output

      oauth-openshift.apps.your.cluster.domain.example.com
      console-openshift-console.apps.your.cluster.domain.example.com
      downloads-openshift-console.apps.your.cluster.domain.example.com
      alertmanager-main-openshift-monitoring.apps.your.cluster.domain.example.com
      grafana-openshift-monitoring.apps.your.cluster.domain.example.com
      prometheus-k8s-openshift-monitoring.apps.your.cluster.domain.example.com

1.9.20. Adding ingress firewall rules

The cluster requires several firewall rules. If you do not use a shared VPC, these rules are created by the ingress controller via the GCP cloud provider. When you use a shared VPC, you can either create cluster-wide firewall rules for all services now or create each rule based on events, when the cluster requests access. By creating each rule when the cluster requests access, you know exactly which firewall rules are required. By creating cluster-wide firewall rules, you can apply the same rule set across multiple clusters.

If you choose to create each rule based on events, you must create firewall rules after you provision the cluster and during the life of the cluster when the console notifies you that rules are missing. Events that are similar to the following event are displayed, and you must add the firewall rules that are required:

Example output

Firewall change required by security admin: `gcloud compute firewall-rules create k8s-fw-a26e631036a3f46cba28f8df67266d55 --network example-network --description "{\"kubernetes.io/service-name\":\"openshift-ingress/router-default\", \"kubernetes.io/service-ip\":\"35.237.236.234\"}\" --allow tcp:443,tcp:80 --source-ranges 0.0.0.0/0 --target-tags exampl-fqzq7-master,exampl-fqzq7-worker --project example-project`

If you encounter issues when creating these rule-based events, you can configure the cluster-wide firewall rules while your cluster is running.

1.9.20.1. Creating cluster-wide firewall rules for a shared VPC in GCP

You can create cluster-wide firewall rules to allow the access that the OpenShift Container Platform cluster requires.

Warning

If you do not choose to create firewall rules based on cluster events, you must create cluster-wide firewall rules.

Prerequisites

  • You exported the variables that the Deployment Manager templates require to deploy your cluster.
  • You created the networking and load balancing components in GCP that your cluster requires.

Procedure

  1. Add a single firewall rule to allow the Google Cloud Engine health checks to access all of the services. This rule enables the ingress load balancers to determine the health status of their instances.

    $ gcloud compute firewall-rules create --allow='tcp:30000-32767,udp:30000-32767' --network="${CLUSTER_NETWORK}" --source-ranges='130.211.0.0/22,35.191.0.0/16,209.85.152.0/22,209.85.204.0/22' --target-tags="${INFRA_ID}-master,${INFRA_ID}-worker" ${INFRA_ID}-ingress-hc --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT}
  2. Add a single firewall rule to allow access to all cluster services:

    • For an external cluster:

      $ gcloud compute firewall-rules create --allow='tcp:80,tcp:443' --network="${CLUSTER_NETWORK}" --source-ranges="0.0.0.0/0" --target-tags="${INFRA_ID}-master,${INFRA_ID}-worker" ${INFRA_ID}-ingress --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT}
    • For a private cluster:

      $ gcloud compute firewall-rules create --allow='tcp:80,tcp:443' --network="${CLUSTER_NETWORK}" --source-ranges=${NETWORK_CIDR} --target-tags="${INFRA_ID}-master,${INFRA_ID}-worker" ${INFRA_ID}-ingress --account=${HOST_PROJECT_ACCOUNT} --project=${HOST_PROJECT}

    Because this rule only allows traffic on TCP ports 80 and 443, ensure that you add all the ports that your services use.

1.9.21. Completing a GCP installation on user-provisioned infrastructure

After you start the OpenShift Container Platform installation on Google Cloud Platform (GCP) user-provisioned infrastructure, you can monitor the cluster events until the cluster is ready.

Prerequisites

  • Deploy the bootstrap machine for an OpenShift Container Platform cluster on user-provisioned GCP infrastructure.
  • Install the oc CLI and log in.

Procedure

  1. Complete the cluster installation:

    $ ./openshift-install --dir=<installation_directory> wait-for install-complete 1

    Example output

    INFO Waiting up to 30m0s for the cluster to initialize...

    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

  2. Observe the running state of your cluster.

    1. Run the following command to view the current cluster version and status:

      $ oc get clusterversion

      Example output

      NAME      VERSION   AVAILABLE   PROGRESSING   SINCE   STATUS
      version             False       True          24m     Working towards 4.5.4: 99% complete

    2. Run the following command to view the Operators managed on the control plane by the Cluster Version Operator (CVO):

      $ oc get clusteroperators

      Example output

      NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
      authentication                             4.5.4     True        False         False      7m56s
      cloud-credential                           4.5.4     True        False         False      31m
      cluster-autoscaler                         4.5.4     True        False         False      16m
      console                                    4.5.4     True        False         False      10m
      csi-snapshot-controller                    4.5.4     True        False         False      16m
      dns                                        4.5.4     True        False         False      22m
      etcd                                       4.5.4     False       False         False      25s
      image-registry                             4.5.4     True        False         False      16m
      ingress                                    4.5.4     True        False         False      16m
      insights                                   4.5.4     True        False         False      17m
      kube-apiserver                             4.5.4     True        False         False      19m
      kube-controller-manager                    4.5.4     True        False         False      20m
      kube-scheduler                             4.5.4     True        False         False      20m
      kube-storage-version-migrator              4.5.4     True        False         False      16m
      machine-api                                4.5.4     True        False         False      22m
      machine-config                             4.5.4     True        False         False      22m
      marketplace                                4.5.4     True        False         False      16m
      monitoring                                 4.5.4     True        False         False      10m
      network                                    4.5.4     True        False         False      23m
      node-tuning                                4.5.4     True        False         False      23m
      openshift-apiserver                        4.5.4     True        False         False      17m
      openshift-controller-manager               4.5.4     True        False         False      15m
      openshift-samples                          4.5.4     True        False         False      16m
      operator-lifecycle-manager                 4.5.4     True        False         False      22m
      operator-lifecycle-manager-catalog         4.5.4     True        False         False      22m
      operator-lifecycle-manager-packageserver   4.5.4     True        False         False      18m
      service-ca                                 4.5.4     True        False         False      23m
      service-catalog-apiserver                  4.5.4     True        False         False      23m
      service-catalog-controller-manager         4.5.4     True        False         False      23m
      storage                                    4.5.4     True        False         False      17m

    3. Run the following command to view your cluster pods:

      $ oc get pods --all-namespaces

      Example output

      NAMESPACE                                               NAME                                                                READY     STATUS      RESTARTS   AGE
      kube-system                                             etcd-member-ip-10-0-3-111.us-east-2.compute.internal                1/1       Running     0          35m
      kube-system                                             etcd-member-ip-10-0-3-239.us-east-2.compute.internal                1/1       Running     0          37m
      kube-system                                             etcd-member-ip-10-0-3-24.us-east-2.compute.internal                 1/1       Running     0          35m
      openshift-apiserver-operator                            openshift-apiserver-operator-6d6674f4f4-h7t2t                       1/1       Running     1          37m
      openshift-apiserver                                     apiserver-fm48r                                                     1/1       Running     0          30m
      openshift-apiserver                                     apiserver-fxkvv                                                     1/1       Running     0          29m
      openshift-apiserver                                     apiserver-q85nm                                                     1/1       Running     0          29m
      ...
      openshift-service-ca-operator                           openshift-service-ca-operator-66ff6dc6cd-9r257                      1/1       Running     0          37m
      openshift-service-ca                                    apiservice-cabundle-injector-695b6bcbc-cl5hm                        1/1       Running     0          35m
      openshift-service-ca                                    configmap-cabundle-injector-8498544d7-25qn6                         1/1       Running     0          35m
      openshift-service-ca                                    service-serving-cert-signer-6445fc9c6-wqdqn                         1/1       Running     0          35m
      openshift-service-catalog-apiserver-operator            openshift-service-catalog-apiserver-operator-549f44668b-b5q2w       1/1       Running     0          32m
      openshift-service-catalog-controller-manager-operator   openshift-service-catalog-controller-manager-operator-b78cr2lnm     1/1       Running     0          31m

    When the current cluster version is AVAILABLE, the installation is complete.

1.9.22. Next steps

1.10. Installing a cluster on GCP in a restricted network

In OpenShift Container Platform version 4.5, you can install a cluster on Google Cloud Platform (GCP) that uses infrastructure that you provide and an internal mirror of the installation release content.

Important

While you can install an OpenShift Container Platform cluster by using mirrored installation release content, your cluster still requires internet access to use the GCP APIs.

The steps for performing a user-provided infrastructure install are outlined here. Several Deployment Manager templates are provided to assist in completing these steps or to help model your own. You are also free to create the required resources through other methods; the templates are just an example.

1.10.1. Prerequisites

1.10.2. Configuring your GCP project

Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.

1.10.2.1. Creating a GCP project

To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster.

Procedure

1.10.2.2. Enabling API services in GCP

Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation.

Prerequisites

  • You created a project to host your cluster.

Procedure

  • Enable the following required API services in the project that hosts your cluster. See Enabling services in the GCP documentation.

    Table 1.23. Required API services

    API serviceConsole service name

    Compute Engine API

    compute.googleapis.com

    Google Cloud APIs

    cloudapis.googleapis.com

    Cloud Resource Manager API

    cloudresourcemanager.googleapis.com

    Google DNS API

    dns.googleapis.com

    IAM Service Account Credentials API

    iamcredentials.googleapis.com

    Identity and Access Management (IAM) API

    iam.googleapis.com

    Service Management API

    servicemanagement.googleapis.com

    Service Usage API

    serviceusage.googleapis.com

    Google Cloud Storage JSON API

    storage-api.googleapis.com

    Cloud Storage

    storage-component.googleapis.com

1.10.2.3. Configuring DNS for GCP

To install OpenShift Container Platform, the Google Cloud Platform (GCP) account you use must have a dedicated public hosted zone in the same project that you host the OpenShift Container Platform cluster. This zone must be authoritative for the domain. The DNS service provides cluster DNS resolution and name lookup for external connections to the cluster.

Procedure

  1. Identify your domain, or subdomain, and registrar. You can transfer an existing domain and registrar or obtain a new one through GCP or another source.

    Note

    If you purchase a new domain, it can take time for the relevant DNS changes to propagate. For more information about purchasing domains through Google, see Google Domains.

  2. Create a public hosted zone for your domain or subdomain in your GCP project. See Creating public zones in the GCP documentation.

    Use an appropriate root domain, such as openshiftcorp.com, or subdomain, such as clusters.openshiftcorp.com.

  3. Extract the new authoritative name servers from the hosted zone records. See Look up your Cloud DNS name servers in the GCP documentation.

    You typically have four name servers.

  4. Update the registrar records for the name servers that your domain uses. For example, if you registered your domain to Google Domains, see the following topic in the Google Domains Help: How to switch to custom name servers.
  5. If you migrated your root domain to Google Cloud DNS, migrate your DNS records. See Migrating to Cloud DNS in the GCP documentation.
  6. If you use a subdomain, follow your company’s procedures to add its delegation records to the parent domain. This process might include a request to your company’s IT department or the division that controls the root domain and DNS services for your company.

1.10.2.4. GCP account limits

The OpenShift Container Platform cluster uses a number of Google Cloud Platform (GCP) components, but the default Quotas do not affect your ability to install a default OpenShift Container Platform cluster.

A default cluster, which contains three compute and three control plane machines, uses the following resources. Note that some resources are required only during the bootstrap process and are removed after the cluster deploys.

Table 1.24. GCP resources used in a default cluster

ServiceComponentLocationTotal resources requiredResources removed after bootstrap

Service account

IAM

Global

5

0

Firewall Rules

Networking

Global

11

1

Forwarding Rules

Compute

Global

2

0

Health checks

Compute

Global

2

0

Images

Compute

Global

1

0

Networks

Networking

Global

1

0

Routers

Networking

Global

1

0

Routes

Networking

Global

2

0

Subnetworks

Compute

Global

2

0

Target Pools

Networking

Global

2

0

Note

If any of the quotas are insufficient during installation, the installation program displays an error that states both which quota was exceeded and the region.

Be sure to consider your actual cluster size, planned cluster growth, and any usage from other clusters that are associated with your account. The CPU, Static IP addresses, and Persistent Disk SSD (Storage) quotas are the ones that are most likely to be insufficient.

If you plan to deploy your cluster in one of the following regions, you will exceed the maximum storage quota and are likely to exceed the CPU quota limit:

  • asia-east2
  • asia-northeast2
  • asia-south1
  • australia-southeast1
  • europe-north1
  • europe-west2
  • europe-west3
  • europe-west6
  • northamerica-northeast1
  • southamerica-east1
  • us-west2

You can increase resource quotas from the GCP console, but you might need to file a support ticket. Be sure to plan your cluster size early so that you can allow time to resolve the support ticket before you install your OpenShift Container Platform cluster.

1.10.2.5. Creating a service account in GCP

OpenShift Container Platform requires a Google Cloud Platform (GCP) service account that provides authentication and authorization to access data in the Google APIs. If you do not have an existing IAM service account that contains the required roles in your project, you must create one.

Prerequisites

  • You created a project to host your cluster.

Procedure

  1. Create a service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation.
  2. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources.

    Note

    While making the service account an Owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable.

  3. Create the service account key in JSON format. See Creating service account keys in the GCP documentation.

    The service account key is required to create a cluster.

1.10.2.5.1. Required GCP permissions

When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. To deploy an OpenShift Container Platform cluster, the service account requires the following permissions. If you deploy your cluster into an existing VPC, the service account does not require certain networking permissions, which are noted in the following lists:

Required roles for the installation program

  • Compute Admin
  • Security Admin
  • Service Account Admin
  • Service Account User
  • Storage Admin

Required roles for creating network resources during installation

  • DNS Administrator

Required roles for user-provisioned GCP infrastructure

  • Deployment Manager Editor
  • Service Account Key Admin

Optional roles

For the cluster to create new limited credentials for its Operators, add the following role:

  • Service Account Key Admin

The roles are applied to the service accounts that the control plane and compute machines use:

Table 1.25. GCP service account permissions

AccountRoles

Control Plane

roles/compute.instanceAdmin

roles/compute.networkAdmin

roles/compute.securityAdmin

roles/storage.admin

roles/iam.serviceAccountUser

Compute

roles/compute.viewer

roles/storage.admin

1.10.2.6. Supported GCP regions

You can deploy an OpenShift Container Platform cluster to the following Google Cloud Platform (GCP) regions:

  • asia-east1 (Changhua County, Taiwan)
  • asia-east2 (Hong Kong)
  • asia-northeast1 (Tokyo, Japan)
  • asia-northeast2 (Osaka, Japan)
  • asia-south1 (Mumbai, India)
  • asia-southeast1 (Jurong West, Singapore)
  • australia-southeast1 (Sydney, Australia)
  • europe-north1 (Hamina, Finland)
  • europe-west1 (St. Ghislain, Belgium)
  • europe-west2 (London, England, UK)
  • europe-west3 (Frankfurt, Germany)
  • europe-west4 (Eemshaven, Netherlands)
  • europe-west6 (Zürich, Switzerland)
  • northamerica-northeast1 (Montréal, Québec, Canada)
  • southamerica-east1 (São Paulo, Brazil)
  • us-central1 (Council Bluffs, Iowa, USA)
  • us-east1 (Moncks Corner, South Carolina, USA)
  • us-east4 (Ashburn, Northern Virginia, USA)
  • us-west1 (The Dalles, Oregon, USA)
  • us-west2 (Los Angeles, California, USA)

1.10.2.7. Installing and configuring CLI tools for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must install and configure the CLI tools for GCP.

Prerequisites

  • You created a project to host your cluster.
  • You created a service account and granted it the required permissions.

Procedure

  1. Install the following binaries in $PATH:

    • gcloud
    • gsutil

    See Install the latest Cloud SDK version in the GCP documentation.

  2. Authenticate using the gcloud tool with your configured service account.

1.10.3. Creating the installation files for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must generate the files that the installation program needs to deploy your cluster and modify them so that the cluster creates only the machines that it will use. You generate and customize the install-config.yaml file, Kubernetes manifests, and Ignition config files.

1.10.3.1. Creating the installation configuration file

You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure

  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> 1
      1
      For <installation_directory>, specify the directory name to store the files that the installation program creates.
      Important

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        Note

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.
      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.
      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
      5. Select the region to deploy the cluster to.
      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.
      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.
  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    Important

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

1.10.3.2. Creating the Kubernetes manifest and Ignition config files

Because you must modify some cluster definition files and manually start the cluster machines, you must generate the Kubernetes manifest and Ignition config files that the cluster needs to make its machines.

Important

The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

Prerequisites

  • Obtain the OpenShift Container Platform installation program. For a restricted network installation, these files are on your mirror host.
  • Create the install-config.yaml installation configuration file.

Procedure

  1. Generate the Kubernetes manifests for the cluster:

    $ ./openshift-install create manifests --dir=<installation_directory> 1

    Example output

    INFO Consuming Install Config from target directory
    WARNING Making control-plane schedulable by setting MastersSchedulable to true for Scheduler cluster settings

    1
    For <installation_directory>, specify the installation directory that contains the install-config.yaml file you created.

    Because you create your own compute machines later in the installation process, you can safely ignore this warning.

  2. Remove the Kubernetes manifest files that define the control plane machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_master-machines-*.yaml

    By removing these files, you prevent the cluster from automatically generating control plane machines.

  3. Optional: If you do not want the cluster to provision compute machines, remove the Kubernetes manifest files that define the worker machines:

    $ rm -f <installation_directory>/openshift/99_openshift-cluster-api_worker-machineset-*.yaml

    Because you create and manage the worker machines yourself, you do not need to initialize these machines.

  4. Modify the <installation_directory>/manifests/cluster-scheduler-02-config.yml Kubernetes manifest file to prevent pods from being scheduled on the control plane machines:

    1. Open the <installation_directory>/manifests/cluster-scheduler-02-config.yml file.
    2. Locate the mastersSchedulable parameter and set its value to False.
    3. Save and exit the file.
  5. Optional: If you do not want the Ingress Operator to create DNS records on your behalf, remove the privateZone and publicZone sections from the <installation_directory>/manifests/cluster-dns-02-config.yml DNS configuration file:

    apiVersion: config.openshift.io/v1
    kind: DNS
    metadata:
      creationTimestamp: null
      name: cluster
    spec:
      baseDomain: example.openshift.com
      privateZone: 1
        id: mycluster-100419-private-zone
      publicZone: 2
        id: example.openshift.com
    status: {}
    1 2
    Remove this section completely.

    If you do so, you must add ingress DNS records manually in a later step.

  6. Obtain the Ignition config files:

    $ ./openshift-install create ignition-configs --dir=<installation_directory> 1
    1
    For <installation_directory>, specify the same installation directory.

    The following files are generated in the directory:

    .
    ├── auth
    │   ├── kubeadmin-password
    │   └── kubeconfig
    ├── bootstrap.ign
    ├── master.ign
    ├── metadata.json
    └── worker.ign

1.10.4. Exporting common variables

1.10.4.1. Extracting the infrastructure name

The Ignition config files contain a unique cluster identifier that you can use to uniquely identify your cluster in Google Cloud Platform (GCP). The provided Deployment Manager templates contain references to this infrastructure name, so you must extract it.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  • To extract and view the infrastructure name from the Ignition config file metadata, run the following command:

    $ jq -r .infraID <installation_directory>/metadata.json 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.

    Example output

    openshift-vw9j6 1

    1
    The output of this command is your cluster name and a random string.

1.10.4.2. Exporting common variables for Deployment Manager templates

You must export a common set of variables that are used with the provided Deployment Manager templates used to assist in completing a user-provided infrastructure install on Google Cloud Platform (GCP).

Note

Specific Deployment Manager templates can also require additional exported variables, which are detailed in their related procedures.

Prerequisites

  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
  • Generate the Ignition config files for your cluster.
  • Install the jq package.

Procedure

  1. Export the following common variables to be used by the provided Deployment Manager templates:

    $ export BASE_DOMAIN='<base_domain>'
    $ export BASE_DOMAIN_ZONE_NAME='<base_domain_zone_name>'
    $ export NETWORK_CIDR='10.0.0.0/16'
    $ export MASTER_SUBNET_CIDR='10.0.0.0/19'
    $ export WORKER_SUBNET_CIDR='10.0.32.0/19'
    
    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    $ export CLUSTER_NAME=`jq -r .clusterName <installation_directory>/metadata.json`
    $ export INFRA_ID=`jq -r .infraID <installation_directory>/metadata.json`
    $ export PROJECT_NAME=`jq -r .gcp.projectID <installation_directory>/metadata.json`
    $ export REGION=`jq -r .gcp.region <installation_directory>/metadata.json`
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.

1.10.5. Creating a VPC in GCP

You must create a VPC in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. You can customize the VPC to meet your requirements. One way to create the VPC is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.

Procedure

  1. Copy the template from the Deployment Manager template for the VPC section of this topic and save it as 01_vpc.py on your computer. This template describes the VPC that your cluster requires.
  2. Create a 01_vpc.yaml resource definition file:

    $ cat <<EOF >01_vpc.yaml
    imports:
    - path: 01_vpc.py
    
    resources:
    - name: cluster-vpc
      type: 01_vpc.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
        master_subnet_cidr: '${MASTER_SUBNET_CIDR}' 3
        worker_subnet_cidr: '${WORKER_SUBNET_CIDR}' 4
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    master_subnet_cidr is the CIDR for the master subnet, for example 10.0.0.0/19.
    4
    worker_subnet_cidr is the CIDR for the worker subnet, for example 10.0.32.0/19.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-vpc --config 01_vpc.yaml

1.10.5.1. Deployment Manager template for the VPC

You can use the following Deployment Manager template to deploy the VPC that you need for your OpenShift Container Platform cluster:

Example 1.14. 01_vpc.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-network',
        'type': 'compute.v1.network',
        'properties': {
            'region': context.properties['region'],
            'autoCreateSubnetworks': False
        }
    }, {
        'name': context.properties['infra_id'] + '-master-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['master_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['worker_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-router',
        'type': 'compute.v1.router',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'nats': [{
                'name': context.properties['infra_id'] + '-nat-master',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 7168,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-master-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }, {
                'name': context.properties['infra_id'] + '-nat-worker',
                'natIpAllocateOption': 'AUTO_ONLY',
                'minPortsPerVm': 512,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-worker-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }]
        }
    }]

    return {'resources': resources}

1.10.6. Creating networking and load balancing components in GCP

You must configure networking and load balancing in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for the network and load balancers section of this topic and save it as 02_infra.py on your computer. This template describes the networking and load balancing objects that your cluster requires.
  2. Export the following variable required by the resource definition:

    $ export CLUSTER_NETWORK=`gcloud compute networks describe ${INFRA_ID}-network --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT} --format json | jq -r .selfLink`
  3. Create a 02_infra.yaml resource definition file:

    $ cat <<EOF >02_infra.yaml
    imports:
    - path: 02_infra.py
    
    resources:
    - name: cluster-infra
      type: 02_infra.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
    
        cluster_domain: '${CLUSTER_NAME}.${BASE_DOMAIN}' 3
        cluster_network: '${CLUSTER_NETWORK}' 4
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    cluster_domain is the domain for the cluster, for example openshift.example.com.
    4
    cluster_network is the selfLink URL to the cluster network.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-infra --config 02_infra.yaml
  5. The templates do not create DNS entries due to limitations of Deployment Manager, so you must create them manually:

    1. Export the following variable:

      $ export CLUSTER_IP=`gcloud compute addresses describe ${INFRA_ID}-cluster-public-ip --region=${REGION} --format json | jq -r .address`
    2. Add external DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}
    3. Add internal DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api-int.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone

1.10.6.1. Deployment Manager template for the network and load balancers

You can use the following Deployment Manager template to deploy the networking objects and load balancers that you need for your OpenShift Container Platform cluster:

02_infra.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-cluster-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-api-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 6080,
            'requestPath': '/readyz'
        }
    }, {
        'name': context.properties['infra_id'] + '-api-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-api-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-api-target-pool.selfLink)',
            'portRange': '6443'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 22624,
            'requestPath': '/healthz'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-ign-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-ign-target-pool.selfLink)',
            'portRange': '22623'
        }
    }, {
        'name': context.properties['infra_id'] + '-private-zone',
        'type': 'dns.v1.managedZone',
        'properties': {
            'description': '',
            'dnsName': context.properties['cluster_domain'] + '.',
            'visibility': 'private',
            'privateVisibilityConfig': {
                'networks': [{
                    'networkUrl': context.properties['cluster_network']
                }]
            }
        }
    }]
    return {'resources': resources}

1.10.7. Creating firewall rules and IAM roles in GCP

You must create security groups and roles in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.

Procedure

  1. Copy the template from the Deployment Manager template for firewall rules and IAM roles section of this topic and save it as 03_security.py on your computer. This template describes the security groups and roles that your cluster requires.
  2. Export the following variables required by the resource definition:

    $ export MASTER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-master-nat-ip --region ${REGION} --format json | jq -r .address`
    $ export WORKER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-worker-nat-ip --region ${REGION} --format json | jq -r .address`
  3. Create a 03_security.yaml resource definition file:

    $ cat <<EOF >03_security.yaml
    imports:
    - path: 03_security.py
    
    resources:
    - name: cluster-security
      type: 03_security.py
      properties:
        allowed_external_cidr: '0.0.0.0/0' 1
        infra_id: '${INFRA_ID}' 2
        region: '${REGION}' 3
        cluster_network: '${CLUSTER_NETWORK}' 4
        network_cidr: '${NETWORK_CIDR}' 5
        master_nat_ip: '${MASTER_NAT_IP}' 6
        worker_nat_ip: '${WORKER_NAT_IP}' 7
    EOF
    1
    allowed_external_cidr is the CIDR range that can access the cluster API and SSH to the bootstrap host. For an internal cluster, set this value to ${NETWORK_CIDR}.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    region is the region to deploy the cluster into, for example us-central1.
    4
    cluster_network is the selfLink URL to the cluster network.
    5
    network_cidr is the CIDR of the VPC network, for example 10.0.0.0/16.
    6
    master_nat_ip is the IP address of the master NAT, for example 34.94.100.1.
    7
    worker_nat_ip is the IP address of the worker NAT, for example 34.94.200.1.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-security --config 03_security.yaml
  5. Export the variable for the master service account:

    $ export MASTER_SA=${INFRA_ID}-m@${PROJECT_NAME}.iam.gserviceaccount.com
  6. Export the variable for the master service account:

    $ export WORKER_SA=${INFRA_ID}-w@${PROJECT_NAME}.iam.gserviceaccount.com
  7. The templates do not create the policy bindings due to limitations of Deployment Manager, so you must create them manually:

    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.instanceAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.securityAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/iam.serviceAccountUser"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/storage.admin"
    
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/compute.viewer"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/storage.admin"
  8. Create a service account key and store it locally for later use:

    $ gcloud iam service-accounts keys create service-account-key.json --iam-account=${MASTER_SA}

1.10.7.1. Deployment Manager template for firewall rules and IAM roles

You can use the following Deployment Manager template to deploy the security objects that you need for your OpenShift Container Platform cluster:

03_security.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-api',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6443']
            }],
            'sourceRanges':  ['0.0.0.0/0'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-mcs',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['22623']
            }],
            'sourceRanges':  [
                context.properties['network_cidr'],
                context.properties['master_nat_ip'],
                context.properties['worker_nat_ip']
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-health-checks',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6080', '22624']
            }],
            'sourceRanges':  ['35.191.0.0/16', '209.85.152.0/22', '209.85.204.0/22'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-etcd',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['2379-2380']
            }],
            'sourceTags': [context.properties['infra_id'] + '-master'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-control-plane',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['10257']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10259']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-network',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'icmp'
            },{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges':  [context.properties['network_cidr']],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-cluster',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'udp',
                'ports': ['4789', '6081']
            },{
                'IPProtocol': 'tcp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'udp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10250']
            },{
                'IPProtocol': 'tcp',
                'ports': ['30000-32767']
            },{
                'IPProtocol': 'udp',
                'ports': ['30000-32767']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-m',
            'displayName': context.properties['infra_id'] + '-master-node'
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-w',
            'displayName': context.properties['infra_id'] + '-worker-node'
        }
    }]

    return {'resources': resources}

1.10.8. Creating the RHCOS cluster image for the GCP infrastructure

You must use a valid Red Hat Enterprise Linux CoreOS (RHCOS) image for Google Cloud Platform (GCP) for your OpenShift Container Platform nodes.

Procedure

  1. Obtain the RHCOS image from the Product Downloads page on the Red Hat customer portal or the RHCOS image mirror page.

    Important

    The RHCOS images might not change with every release of OpenShift Container Platform. You must download an image with the highest version that is less than or equal to the OpenShift Container Platform version that you install. Use the image version that matches your OpenShift Container Platform version if it is available.

    The file name contains the OpenShift Container Platform version number in the format rhcos-<version>-gcp.tar.

  2. Export the following variable:

    $ export IMAGE_SOURCE=<downloaded_image_file_path>
  3. Create the cluster image:

    $ gcloud compute images create "${INFRA_ID}-rhcos-image" \
        --source-uri="${IMAGE_SOURCE}"

1.10.9. Creating the bootstrap machine in GCP

You must create the bootstrap machine in Google Cloud Platform (GCP) to use during OpenShift Container Platform cluster initialization. One way to create this machine is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your bootstrap machine, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.

Procedure

  1. Copy the template from the Deployment Manager template for the bootstrap machine section of this topic and save it as 04_bootstrap.py on your computer. This template describes the bootstrap machine that your cluster requires.
  2. Export the variables that the deployment template uses:

    1. Export the control plane subnet location:

      $ export CONTROL_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-master-subnet --region=${REGION} --format json | jq -r .selfLink`
    2. Export the location of the Red Hat Enterprise Linux CoreOS (RHCOS) image that the installation program requires:

      $ export CLUSTER_IMAGE=`gcloud compute images describe ${INFRA_ID}-rhcos-image --format json | jq -r .selfLink`
    3. Export the three zones that the cluster uses:

      $ export ZONE_0=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[0] | cut -d "/" -f9`
      $ export ZONE_1=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[1] | cut -d "/" -f9`
      $ export ZONE_2=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[2] | cut -d "/" -f9`
  3. Create a bucket and upload the bootstrap.ign file:

    $ gsutil mb gs://${INFRA_ID}-bootstrap-ignition
    $ gsutil cp bootstrap.ign gs://${INFRA_ID}-bootstrap-ignition/
  4. Create a signed URL for the bootstrap instance to use to access the Ignition config. Export the URL from the output as a variable:

    $ export BOOTSTRAP_IGN=`gsutil signurl -d 1h service-account-key.json \
        gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign | grep "^gs:" | awk '{print $5}'`
  5. Create a 04_bootstrap.yaml resource definition file:

    $ cat <<EOF >04_bootstrap.yaml
    imports:
    - path: 04_bootstrap.py
    
    resources:
    - name: cluster-bootstrap
      type: 04_bootstrap.py
      properties:
        infra_id: '${INFRA_ID}' 1
        region: '${REGION}' 2
        zone: '${ZONE_0}' 3
    
        cluster_network: '${CLUSTER_NETWORK}' 4
        control_subnet: '${CONTROL_SUBNET}' 5
        image: '${CLUSTER_IMAGE}' 6
        machine_type: 'n1-standard-4' 7
        root_volume_size: '128' 8
    
        bootstrap_ign: '${BOOTSTRAP_IGN}' 9
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    region is the region to deploy the cluster into, for example us-central1.
    3
    zone is the zone to deploy the bootstrap instance into, for example us-central1-b.
    4
    cluster_network is the selfLink URL to the cluster network.
    5
    control_subnet is the selfLink URL to the control subnet.
    6
    image is the selfLink URL to the RHCOS image.
    7
    machine_type is the machine type of the instance, for example n1-standard-4.
    8
    bootstrap_ign is the URL output when creating a signed URL above.
  6. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-bootstrap --config 04_bootstrap.yaml
  7. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the bootstrap machine manually:

    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap

1.10.9.1. Deployment Manager template for the bootstrap machine

You can use the following Deployment Manager template to deploy the bootstrap machine that you need for your OpenShift Container Platform cluster:

Example 1.15. 04_bootstrap.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-bootstrap-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': '{"ignition":{"config":{"replace":{"source":"' + context.properties['bootstrap_ign'] + '"}},"version":"3.1.0"}}',
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet'],
                'accessConfigs': [{
                    'natIP': '$(ref.' + context.properties['infra_id'] + '-bootstrap-public-ip.address)'
                }]
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                    context.properties['infra_id'] + '-bootstrap'
                ]
            },
            'zone': context.properties['zone']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap-instance-group',
        'type': 'compute.v1.instanceGroup',
        'properties': {
            'namedPorts': [
                {
                    'name': 'ignition',
                    'port': 22623
                }, {
                    'name': 'https',
                    'port': 6443
                }
            ],
            'network': context.properties['cluster_network'],
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.10.10. Creating the control plane machines in GCP

You must create the control plane machines in Google Cloud Platform (GCP) for your cluster to use. One way to create these machines is to modify the provided Deployment Manager template.

Note

If you do not use the provided Deployment Manager template to create your control plane machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.

Procedure

  1. Copy the template from the Deployment Manager template for control plane machines section of this topic and save it as 05_control_plane.py on your computer. This template describes the control plane machines that your cluster requires.
  2. Export the following variables needed by the resource definition:

    $ export MASTER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-master-node " | awk '{print $2}'`
    $ export MASTER_IGNITION=`cat master.ign`
  3. Create a 05_control_plane.yaml resource definition file:

    $ cat <<EOF >05_control_plane.yaml
    imports:
    - path: 05_control_plane.py
    
    resources:
    - name: cluster-control-plane
      type: 05_control_plane.py
      properties:
        infra_id: '${INFRA_ID}' 1
        zones: 2
        - '${ZONE_0}'
        - '${ZONE_1}'
        - '${ZONE_2}'
    
        control_subnet: '${CONTROL_SUBNET}' 3
        image: '${CLUSTER_IMAGE}' 4
        machine_type: 'n1-standard-4' 5
        root_volume_size: '128'
        service_account_email: '${MASTER_SERVICE_ACCOUNT_EMAIL}' 6
    
        ignition: '${MASTER_IGNITION}' 7
    EOF
    1
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    2
    zones are the zones to deploy the control plane instances into, for example us-central1-a, us-central1-b, and us-central1-c.
    3
    control_subnet is the selfLink URL to the control subnet.
    4
    image is the selfLink URL to the RHCOS image.
    5
    machine_type is the machine type of the instance, for example n1-standard-4.
    6
    service_account_email is the email address for the master service account that you created.
    7
    ignition is the contents of the master.ign file.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-control-plane --config 05_control_plane.yaml
  5. The templates do not manage DNS entries due to limitations of Deployment Manager, so you must add the etcd entries manually:

    $ export MASTER0_IP=`gcloud compute instances describe ${INFRA_ID}-m-0 --zone ${ZONE_0} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER1_IP=`gcloud compute instances describe ${INFRA_ID}-m-1 --zone ${ZONE_1} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER2_IP=`gcloud compute instances describe ${INFRA_ID}-m-2 --zone ${ZONE_2} --format json | jq -r .networkInterfaces[0].networkIP`
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER0_IP} --name etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER1_IP} --name etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER2_IP} --name etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add \
      "0 10 2380 etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      --name _etcd-server-ssl._tcp.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type SRV --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone
  6. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the control plane machines manually:

    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2

1.10.10.1. Deployment Manager template for control plane machines

You can use the following Deployment Mananger template to deploy the control plane machines that you need for your OpenShift Container Platform cluster:

Example 1.16. 05_control_plane.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-master-0',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][0] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][0] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][0]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-1',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][1] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][1] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][1]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-2',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][2] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][2] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][2]
        }
    }]

    return {'resources': resources}

1.10.11. Wait for bootstrap completion and remove bootstrap resources in GCP

After you create all of the required infrastructure in Google Cloud Platform (GCP), wait for the bootstrap process to complete on the machines that you provisioned by using the Ignition config files that you generated with the installation program.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Change to the directory that contains the installation program and run the following command:

    $ ./openshift-install wait-for bootstrap-complete --dir=<installation_directory> \ 1
        --log-level info 2
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2
    To view different installation details, specify warn, debug, or error instead of info.

    If the command exits without a FATAL warning, your production control plane has initialized.

  2. Delete the bootstrap resources:

    $ gcloud compute target-pools remove-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools remove-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gsutil rm gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign
    $ gsutil rb gs://${INFRA_ID}-bootstrap-ignition
    $ gcloud deployment-manager deployments delete ${INFRA_ID}-bootstrap

1.10.12. Creating additional worker machines in GCP

You can create worker machines in Google Cloud Platform (GCP) for your cluster to use by launching individual instances discretely or by automated processes outside the cluster, such as Auto Scaling Groups. You can also take advantage of the built-in cluster scaling mechanisms and the machine API in OpenShift Container Platform.

In this example, you manually launch one instance by using the Deployment Manager template. Additional instances can be launched by including additional resources of type 06_worker.py in the file.

Note

If you do not use the provided Deployment Manager template to create your worker machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites

  • Configure a GCP account.
  • Generate the Ignition config files for your cluster.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.

Procedure

  1. Copy the template from the Deployment Manager template for worker machines section of this topic and save it as 06_worker.py on your computer. This template describes the worker machines that your cluster requires.
  2. Export the variables that the resource definition uses.

    1. Export the subnet that hosts the compute machines:

      $ export COMPUTE_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-worker-subnet --region=${REGION} --format json | jq -r .selfLink`
    2. Export the email address for your service account:

      $ export WORKER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-worker-node " | awk '{print $2}'`
    3. Export the location of the compute machine Ignition config file:

      $ export WORKER_IGNITION=`cat worker.ign`
  3. Create a 06_worker.yaml resource definition file:

    $ cat <<EOF >06_worker.yaml
    imports:
    - path: 06_worker.py
    
    resources:
    - name: 'w-a-0' 1
      type: 06_worker.py
      properties:
        infra_id: '${INFRA_ID}' 2
        zone: '${ZONE_0}' 3
    
        compute_subnet: '${COMPUTE_SUBNET}' 4
        image: '${CLUSTER_IMAGE}' 5
        machine_type: 'n1-standard-4' 6
        root_volume_size: '128'
        service_account_email: '${WORKER_SERVICE_ACCOUNT_EMAIL}' 7
    
        ignition: '${WORKER_IGNITION}' 8
    EOF
    1
    name is the name of the worker machine, for example w-a-0.
    2
    infra_id is the INFRA_ID infrastructure name from the extraction step.
    3
    zone is the zone to deploy the worker machine into, for example us-central1-a.
    4
    compute_subnet is the selfLink URL to the compute subnet.
    5
    image is the selfLink URL to the RHCOS image.
    6
    machine_type is the machine type of the instance, for example n1-standard-4.
    7
    service_account_email is the email address for the worker service account that you created.
    8
    ignition is the contents of the worker.ign file.
  4. Optional: If you want to launch additional instances, include additional resources of type 06_worker.py in your 06_worker.yaml resource definition file.
  5. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-worker --config 06_worker.yaml

1.10.12.1. Deployment Manager template for worker machines

You can use the following Deloyment Manager template to deploy the worker machines that you need for your OpenShift Container Platform cluster:

Example 1.17. 06_worker.py Deployment Manager template

def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-' + context.env['name'],
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['compute_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-worker',
                ]
            },
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

1.10.13. Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites

  • Deploy an OpenShift Container Platform cluster.
  • Install the oc CLI.

Procedure

  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig 1
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami

    Example output

    system:admin

1.10.14. Approving the CSRs for your machines

When you add machines to a cluster, two pending certificate signing requests (CSRs) are generated for each machine that you added. You must confirm that these CSRs are approved or, if necessary, approve them yourself.

Prerequisites

  • You added machines to your cluster.

Procedure

  1. Confirm that the cluster recognizes the machines:

    $ oc get nodes

    Example output

    NAME      STATUS    ROLES   AGE  VERSION
    master-0  Ready     master  63m  v1.19.0
    master-1  Ready     master  63m  v1.19.0
    master-2  Ready     master  64m  v1.19.0
    worker-0  NotReady  worker  76s  v1.19.0
    worker-1  NotReady  worker  70s  v1.19.0

    The output lists all of the machines that you created.

  2. Review the pending CSRs and ensure that you see a client and server request with the Pending or Approved status for each machine that you added to the cluster:

    $ oc get csr

    Example output

    NAME        AGE     REQUESTOR                                                                   CONDITION
    csr-8b2br   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending 1
    csr-8vnps   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending
    csr-bfd72   5m26s   system:node:ip-10-0-50-126.us-east-2.compute.internal                       Pending 2
    csr-c57lv   5m26s   system:node:ip-10-0-95-157.us-east-2.compute.internal                       Pending
    ...

    1
    A client request CSR.
    2
    A server request CSR.

    In this example, two machines are joining the cluster. You might see more approved CSRs in the list.

  3. If the CSRs were not approved, after all of the pending CSRs for the machines you added are in Pending status, approve the CSRs for your cluster machines:

    Note

    Because the CSRs rotate automatically, approve your CSRs within an hour of adding the machines to the cluster. If you do not approve them within an hour, the certificates will rotate, and more than two certificates will be present for each node. You must approve all of these certificates. After you approve the initial CSRs, the subsequent node client CSRs are automatically approved by the cluster kube-controller-manager. You must implement a method of automatically approving the kubelet serving certificate requests.

    • To approve them individually, run the following command for each valid CSR:

      $ oc adm certificate approve <csr_name> 1
      1
      <csr_name> is the name of a CSR from the list of current CSRs.
    • To approve all pending CSRs, run the following command:

      $ oc get csr -o go-template='{{range .items}}{{if not .status}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}' | xargs oc adm certificate approve

Additional information

1.10.15. Optional: Adding the ingress DNS records

If you removed the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs, you must manually create DNS records that point at the ingress load balancer. You can create either a wildcard *.apps.{baseDomain}. or specific records. You can use A, CNAME, and other records per your requirements.

Prerequisites

  • Configure a GCP account.
  • Remove the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs.
  • Create and configure a VPC and associated subnets in GCP.
  • Create and configure networking and load balancers in GCP.
  • Create control plane and compute roles.
  • Create the bootstrap machine.
  • Create the control plane machines.
  • Create the worker machines.

Procedure

  1. Wait for the Ingress router to create a load balancer and populate the EXTERNAL-IP field:

    $ oc -n openshift-ingress get service router-default

    Example output

    NAME             TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)                      AGE
    router-default   LoadBalancer   172.30.18.154   35.233.157.184   80:32288/TCP,443:31215/TCP   98

  2. Add the A record to your zones:

    • To use A records:

      1. Export the variable for the router IP address:

        $ export ROUTER_IP=`oc -n openshift-ingress get service router-default --no-headers | awk '{print $4}'`
      2. Add the A record to the private zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
      3. For an external cluster, also add the A record to the public zones:

        $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
        $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
        $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME} --project ${HOST_PROJECT} --account ${HOST_PROJECT_ACCOUNT}
    • To add explicit domains instead of using a wildcard, create entries for each of the cluster’s current routes:

      $ oc get --all-namespaces -o jsonpath='{range .items[*]}{range .status.ingress[*]}{.host}{"\n"}{end}{end}' routes

      Example output

      oauth-openshift.apps.your.cluster.domain.example.com
      console-openshift-console.apps.your.cluster.domain.example.com
      downloads-openshift-console.apps.your.cluster.domain.example.com
      alertmanager-main-openshift-monitoring.apps.your.cluster.domain.example.com
      grafana-openshift-monitoring.apps.your.cluster.domain.example.com
      prometheus-k8s-openshift-monitoring.apps.your.cluster.domain.example.com

1.10.16. Completing a GCP installation on user-provisioned infrastructure

After you start the OpenShift Container Platform installation on Google Cloud Platform (GCP) user-provisioned infrastructure, you can monitor the cluster events until the cluster is ready.

Prerequisites

  • Deploy the bootstrap machine for an OpenShift Container Platform cluster on user-provisioned GCP infrastructure.
  • Install the oc CLI and log in.

Procedure

  1. Complete the cluster installation:

    $ ./openshift-install --dir=<installation_directory> wait-for install-complete 1

    Example output

    INFO Waiting up to 30m0s for the cluster to initialize...

    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    Important

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending node-bootstrapper certificate signing requests (CSRs) to recover kubelet certificates. See the documentation for Recovering from expired control plane certificates for more information.

  2. Observe the running state of your cluster.

    1. Run the following command to view the current cluster version and status:

      $ oc get clusterversion

      Example output

      NAME      VERSION   AVAILABLE   PROGRESSING   SINCE   STATUS
      version             False       True          24m     Working towards 4.5.4: 99% complete

    2. Run the following command to view the Operators managed on the control plane by the Cluster Version Operator (CVO):

      $ oc get clusteroperators

      Example output

      NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
      authentication                             4.5.4     True        False         False      7m56s
      cloud-credential                           4.5.4     True        False         False      31m
      cluster-autoscaler                         4.5.4     True        False         False      16m
      console                                    4.5.4     True        False         False      10m
      csi-snapshot-controller                    4.5.4     True        False         False      16m
      dns                                        4.5.4     True        False         False      22m
      etcd                                       4.5.4     False       False         False      25s
      image-registry                             4.5.4     True        False         False      16m
      ingress                                    4.5.4     True        False         False      16m
      insights                                   4.5.4     True        False         False      17m
      kube-apiserver                             4.5.4     True        False         False      19m
      kube-controller-manager                    4.5.4     True        False         False      20m
      kube-scheduler                             4.5.4     True        False         False      20m
      kube-storage-version-migrator              4.5.4     True        False         False      16m
      machine-api                                4.5.4     True        False         False      22m
      machine-config                             4.5.4     True        False         False      22m
      marketplace                                4.5.4     True        False         False      16m
      monitoring                                 4.5.4     True        False         False      10m
      network                                    4.5.4     True        False         False      23m
      node-tuning                                4.5.4     True        False         False      23m
      openshift-apiserver                        4.5.4     True        False         False      17m
      openshift-controller-manager               4.5.4     True        False         False      15m
      openshift-samples                          4.5.4     True        False         False      16m
      operator-lifecycle-manager                 4.5.4     True        False         False      22m
      operator-lifecycle-manager-catalog         4.5.4     True        False         False      22m
      operator-lifecycle-manager-packageserver   4.5.4     True        False         False      18m
      service-ca                                 4.5.4     True        False         False      23m
      service-catalog-apiserver                  4.5.4     True        False         False      23m
      service-catalog-controller-manager         4.5.4     True        False         False      23m
      storage                                    4.5.4     True        False         False      17m

    3. Run the following command to view your cluster pods:

      $ oc get pods --all-namespaces

      Example output

      NAMESPACE                                               NAME                                                                READY     STATUS      RESTARTS   AGE
      kube-system                                             etcd-member-ip-10-0-3-111.us-east-2.compute.internal                1/1       Running     0          35m
      kube-system                                             etcd-member-ip-10-0-3-239.us-east-2.compute.internal                1/1       Running     0          37m
      kube-system                                             etcd-member-ip-10-0-3-24.us-east-2.compute.internal                 1/1       Running     0          35m
      openshift-apiserver-operator                            openshift-apiserver-operator-6d6674f4f4-h7t2t                       1/1       Running     1          37m
      openshift-apiserver                                     apiserver-fm48r                                                     1/1       Running     0          30m
      openshift-apiserver                                     apiserver-fxkvv                                                     1/1       Running     0          29m
      openshift-apiserver                                     apiserver-q85nm                                                     1/1       Running     0          29m
      ...
      openshift-service-ca-operator                           openshift-service-ca-operator-66ff6dc6cd-9r257                      1/1       Running     0          37m
      openshift-service-ca                                    apiservice-cabundle-injector-695b6bcbc-cl5hm                        1/1       Running     0          35m
      openshift-service-ca                                    configmap-cabundle-injector-8498544d7-25qn6                         1/1       Running     0          35m
      openshift-service-ca                                    service-serving-cert-signer-6445fc9c6-wqdqn                         1/1       Running     0          35m
      openshift-service-catalog-apiserver-operator            openshift-service-catalog-apiserver-operator-549f44668b-b5q2w       1/1       Running     0          32m
      openshift-service-catalog-controller-manager-operator   openshift-service-catalog-controller-manager-operator-b78cr2lnm     1/1       Running     0          31m

    When the current cluster version is AVAILABLE, the installation is complete.

1.10.17. Next steps

1.11. Uninstalling a cluster on GCP

You can remove a cluster that you deployed to Google Cloud Platform (GCP).

1.11.1. Removing a cluster that uses installer-provisioned infrastructure

You can remove a cluster that uses installer-provisioned infrastructure from your cloud.

Prerequisites

  • Have a copy of the installation program that you used to deploy the cluster.
  • Have the files that the installation program generated when you created your cluster.

Procedure

  1. From the computer that you used to install the cluster, run the following command:

    $ ./openshift-install destroy cluster \
    --dir=<installation_directory> --log-level=info 1 2
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2
    To view different details, specify warn, debug, or error instead of info.
    Note

    You must specify the directory that contains the cluster definition files for your cluster. The installation program requires the metadata.json file in this directory to delete the cluster.

  2. Optional: Delete the <installation_directory> directory and the OpenShift Container Platform installation program.

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