Chapter 2. Deploy OpenShift Data Foundation using local storage devices

You can deploy OpenShift Data Foundation on bare metal infrastructure where OpenShift Container Platform is already installed.

Also, it is possible to deploy only the Multicloud Object Gateway (MCG) component with OpenShift Data Foundation. For more information, see Deploy standalone Multicloud Object Gateway.

Perform the following steps to deploy OpenShift Data Foundation:

2.1. Installing Local Storage Operator

Install the Local Storage Operator from the Operator Hub before creating Red Hat OpenShift Data Foundation clusters on local storage devices.

Procedure

  1. Log in to the OpenShift Web Console.
  2. Click Operators → OperatorHub.
  3. Type local storage in the Filter by keyword​ box to find the Local Storage Operator from the list of operators, and click on it.
  4. Set the following options on the Install Operator page:

    1. Update channel as either 4.12 or stable.
    2. Installation mode as A specific namespace on the cluster.
    3. Installed Namespace as Operator recommended namespace openshift-local-storage.
    4. Update approval as Automatic.
  5. Click Install.

Verification steps

  • Verify that the Local Storage Operator shows a green tick indicating successful installation.

2.2. Installing Red Hat OpenShift Data Foundation Operator

You can install Red Hat OpenShift Data Foundation Operator using the Red Hat OpenShift Container Platform Operator Hub.

Prerequisites

  • Access to an OpenShift Container Platform cluster using an account with cluster-admin and operator installation permissions.
  • You must have at least three worker nodes in the Red Hat OpenShift Container Platform cluster. Each node should include one disk and requires 3 disks (PVs). However, one PV remains eventually unused by default. This is an expected behavior.
  • For additional resource requirements, see the Planning your deployment guide.
Important
  • When you need to override the cluster-wide default node selector for OpenShift Data Foundation, you can use the following command to specify a blank node selector for the openshift-storage namespace (create openshift-storage namespace in this case):

    $ oc annotate namespace openshift-storage openshift.io/node-selector=
  • Taint a node as infra to ensure only Red Hat OpenShift Data Foundation resources are scheduled on that node. This helps you save on subscription costs. For more information, see the How to use dedicated worker nodes for Red Hat OpenShift Data Foundation section in the Managing and Allocating Storage Resources guide.

Procedure

  1. Log in to the OpenShift Web Console.
  2. Click Operators → OperatorHub.
  3. Scroll or type OpenShift Data Foundation into the Filter by keyword box to find the OpenShift Data Foundation Operator.
  4. Click Install.
  5. Set the following options on the Install Operator page:

    1. Update Channel as stable-4.12.
    2. Installation Mode as A specific namespace on the cluster.
    3. Installed Namespace as Operator recommended namespace openshift-storage. If Namespace openshift-storage does not exist, it is created during the operator installation.
    4. Select Approval Strategy as Automatic or Manual.

      If you select Automatic updates, then the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without any intervention.

      If you select Manual updates, then the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to update the Operator to a newer version.

    5. Ensure that the Enable option is selected for the Console plugin.
    6. Click Install.

Verification steps

  • After the operator is successfully installed, a pop-up with a message, Web console update is available appears on the user interface. Click Refresh web console from this pop-up for the console changes to reflect.
  • In the Web Console:

    • Navigate to Installed Operators and verify that the OpenShift Data Foundation Operator shows a green tick indicating successful installation.
    • Navigate to Storage and verify if Data Foundation dashboard is available.

2.3. Enabling cluster-wide encryption with KMS using the Token authentication method

You can enable the key value backend path and policy in the vault for token authentication.

Prerequisites

  • Administrator access to the vault.
  • A valid Red Hat OpenShift Data Foundation Advanced subscription. For more information, see the knowledgebase article on OpenShift Data Foundation subscriptions.
  • Carefully, select a unique path name as the backend path that follows the naming convention since you cannot change it later.

Procedure

  1. Enable the Key/Value (KV) backend path in the vault.

    For vault KV secret engine API, version 1:

    $ vault secrets enable -path=odf kv

    For vault KV secret engine API, version 2:

    $ vault secrets enable -path=odf kv-v2
  2. Create a policy to restrict the users to perform a write or delete operation on the secret:

    echo '
    path "odf/*" {
      capabilities = ["create", "read", "update", "delete", "list"]
    }
    path "sys/mounts" {
    capabilities = ["read"]
    }'| vault policy write odf -
  3. Create a token that matches the above policy:

    $ vault token create -policy=odf -format json

2.4. Enabling cluster-wide encryption with KMS using the Kubernetes authentication method

You can enable the Kubernetes authentication method for cluster-wide encryption using the Key Management System (KMS).

Prerequisites

  • Administrator access to Vault.
  • A valid Red Hat OpenShift Data Foundation Advanced subscription. For more information, see the knowledgebase article on OpenShift Data Foundation subscriptions.
  • The OpenShift Data Foundation operator must be installed from the Operator Hub.
  • Select a unique path name as the backend path that follows the naming convention carefully. You cannot change this path name later.

Procedure

  1. Create a service account:

    $ oc -n openshift-storage create serviceaccount <serviceaccount_name>

    where, <serviceaccount_name> specifies the name of the service account.

    For example:

    $ oc -n openshift-storage create serviceaccount odf-vault-auth
  2. Create clusterrolebindings and clusterroles:

    $ oc -n openshift-storage create clusterrolebinding vault-tokenreview-binding --clusterrole=system:auth-delegator --serviceaccount=openshift-storage:_<serviceaccount_name>_

    For example:

    $ oc -n openshift-storage create clusterrolebinding vault-tokenreview-binding --clusterrole=system:auth-delegator --serviceaccount=openshift-storage:odf-vault-auth
  3. Create a secret for the serviceaccount token and CA certificate.

    $ cat <<EOF | oc create -f -
    apiVersion: v1
    kind: Secret
    metadata:
      name: odf-vault-auth-token
      namespace: openshift-storage
      annotations:
        kubernetes.io/service-account.name: <serviceaccount_name>
    type: kubernetes.io/service-account-token
    data: {}
    EOF

    where, <serviceaccount_name> is the service account created in the earlier step.

  4. Get the token and the CA certificate from the secret.

    $ SA_JWT_TOKEN=$(oc -n openshift-storage get secret odf-vault-auth-token -o jsonpath="{.data['token']}" | base64 --decode; echo)
    $ SA_CA_CRT=$(oc -n openshift-storage get secret odf-vault-auth-token -o jsonpath="{.data['ca\.crt']}" | base64 --decode; echo)
  5. Retrieve the OCP cluster endpoint.

    $ OCP_HOST=$(oc config view --minify --flatten -o jsonpath="{.clusters[0].cluster.server}")
  6. Fetch the service account issuer:

    $ oc proxy &
    $ proxy_pid=$!
    $ issuer="$( curl --silent http://127.0.0.1:8001/.well-known/openid-configuration | jq -r .issuer)"
    $ kill $proxy_pid
  7. Use the information collected in the previous step to setup the Kubernetes authentication method in Vault:

    $ vault auth enable kubernetes
    $ vault write auth/kubernetes/config \
              token_reviewer_jwt="$SA_JWT_TOKEN" \
              kubernetes_host="$OCP_HOST" \
              kubernetes_ca_cert="$SA_CA_CRT" \
              issuer="$issuer"
    Important

    To configure the Kubernetes authentication method in Vault when the issuer is empty:

    $ vault write auth/kubernetes/config \
              token_reviewer_jwt="$SA_JWT_TOKEN" \
              kubernetes_host="$OCP_HOST" \
              kubernetes_ca_cert="$SA_CA_CRT"
  8. Enable the Key/Value (KV) backend path in Vault.

    For Vault KV secret engine API, version 1:

    $ vault secrets enable -path=odf kv

    For Vault KV secret engine API, version 2:

    $ vault secrets enable -path=odf kv-v2
  9. Create a policy to restrict the users to perform a write or delete operation on the secret:

    echo '
    path "odf/*" {
      capabilities = ["create", "read", "update", "delete", "list"]
    }
    path "sys/mounts" {
    capabilities = ["read"]
    }'| vault policy write odf -
  10. Generate the roles:

    $ vault write auth/kubernetes/role/odf-rook-ceph-op \
            bound_service_account_names=rook-ceph-system,rook-ceph-osd,noobaa \
            bound_service_account_namespaces=openshift-storage \
            policies=odf \
            ttl=1440h

    The role odf-rook-ceph-op is later used while you configure the KMS connection details during the creation of the storage system.

    $ vault write auth/kubernetes/role/odf-rook-ceph-osd \
            bound_service_account_names=rook-ceph-osd \
            bound_service_account_namespaces=openshift-storage \
            policies=odf \
            ttl=1440h

2.5. Creating Multus networks [Technology Preview]

OpenShift Container Platform uses the Multus CNI plug-in to allow chaining of CNI plug-ins. You can configure your default pod network during cluster installation. The default network handles all ordinary network traffic for the cluster.

You can define an additional network based on the available CNI plug-ins and attach one or more of these networks to your pods. To attach additional network interfaces to a pod, you must create configurations that define how the interfaces are attached.

You specify each interface by using a NetworkAttachmentDefinition (NAD) custom resource (CR). A CNI configuration inside each of the NetworkAttachmentDefinition defines how that interface is created.

OpenShift Data Foundation uses the CNI plug-in called macvlan. Creating a macvlan-based additional network allows pods on a host to communicate with other hosts and pods on those hosts using a physical network interface. Each pod that is attached to a macvlan-based additional network is provided a unique MAC address.

Important

Multus support is a Technology Preview feature that is only supported and has been tested on bare metal and VMWare deployments. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information, see Technology Preview Features Support Scope.

2.5.1. Creating network attachment definitions

To utilize Multus, an already working cluster with the correct networking configuration is required, see Recommended network configuration and requirements for a Multus configuration. The newly created NetworkAttachmentDefinition (NAD) can be selected during the Storage Cluster installation. This is the reason they must be created before the Storage Cluster.

You can select the newly created NetworkAttachmentDefinition (NAD) during the Storage Cluster installation. This is the reason you must create the NAD before you create the Storage Cluster.

As detailed in the Planning Guide, the Multus networks you create depend on the number of available network interfaces you have for OpenShift Data Foundation traffic. It is possible to separate all of the storage traffic onto one of the two interfaces (one interface used for default OpenShift SDN) or to further segregate storage traffic into client storage traffic (public) and storage replication traffic (private or cluster).

The following is an example NetworkAttachmentDefinition for all the storage traffic, public and cluster, on the same interface. It requires one additional interface on all schedulable nodes (OpenShift default SDN on separate network interface):

apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: ocs-public-cluster
  namespace: openshift-storage
spec:
  config: '{
  	"cniVersion": "0.3.1",
  	"type": "macvlan",
  	"master": "ens2",
  	"mode": "bridge",
  	"ipam": {
    	    "type": "whereabouts",
    	    "range": "192.168.1.0/24"
  	}
  }'
Note

All network interface names must be the same on all the nodes attached to the Multus network (that is, ens2 for ocs-public-cluster).

The following is an example NetworkAttachmentDefinition for storage traffic on separate Multus networks, public, for client storage traffic, and cluster, for replication traffic. It requires two additional interfaces on OpenShift nodes hosting Object Storge Device (OSD) pods and one additional interface on all other schedulable nodes (OpenShift default SDN on separate network interface):

apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: ocs-public
  namespace: openshift-storage
spec:
  config: '{
  	"cniVersion": "0.3.1",
  	"type": "macvlan",
  	"master": "ens2",
  	"mode": "bridge",
  	"ipam": {
    	    "type": "whereabouts",
    	    "range": "192.168.1.0/24"
  	}
  }'

Example NetworkAttachmentDefinition:

apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: ocs-cluster
  namespace: openshift-storage
spec:
  config: '{
  	"cniVersion": "0.3.1",
  	"type": "macvlan",
  	"master": "ens3",
  	"mode": "bridge",
  	"ipam": {
    	    "type": "whereabouts",
    	    "range": "192.168.2.0/24"
  	}
  }'
Note

All network interface names must be the same on all the nodes attached to the Multus networks (that is, ens2 for ocs-public, and ens3 for ocs-cluster).

2.6. Creating OpenShift Data Foundation cluster on bare metal

Prerequisites

Procedure

  1. In the OpenShift Web Console, click Operators → Installed Operators to view all the installed operators.

    Ensure that the Project selected is openshift-storage.

  2. Click on the OpenShift Data Foundation operator, and then click Create StorageSystem.
  3. In the Backing storage page, perform the following:

    1. Select Full Deployment for the Deployment type option.
    2. Select the Create a new StorageClass using the local storage devices option.
    3. Click Next.

      Important

      You are prompted to install the Local Storage Operator if it is not already installed. Click Install, and follow the procedure as described in Installing Local Storage Operator.

  4. In the Create local volume set page, provide the following information:

    1. Enter a name for the LocalVolumeSet and the StorageClass.

      The local volume set name appears as the default value for the storage class name. You can change the name.

    2. Select one of the following:

      • Disks on all nodes

        Uses the available disks that match the selected filters on all the nodes.

      • Disks on selected nodes

        Uses the available disks that match the selected filters only on the selected nodes.

        Important
        • The flexible scaling feature is enabled only when the storage cluster that you created with three or more nodes are spread across fewer than the minimum requirement of three availability zones.

          For information about flexible scaling, see knowledgebase article on Scaling OpenShift Data Foundation cluster using YAML when flexible scaling is enabled.

        • Flexible scaling features get enabled at the time of deployment and can not be enabled or disabled later on.
        • If the nodes selected do not match the OpenShift Data Foundation cluster requirement of an aggregated 30 CPUs and 72 GiB of RAM, a minimal cluster is deployed.

          For minimum starting node requirements, see the Resource requirements section in the Planning guide.

    3. From the available list of Disk Type, select SSD/NVMe.
    4. Expand the Advanced section and set the following options:

      Volume Mode

      Block is selected as the default value.

      Device Type

      Select one or more device type from the dropdown list.

      Disk Size

      Set a minimum size of 100GB for the device and maximum available size of the device that needs to be included.

      Maximum Disks Limit

      This indicates the maximum number of Persistent Volumes (PVs) that you can create on a node. If this field is left empty, then PVs are created for all the available disks on the matching nodes.

    5. Click Next.

      A pop-up to confirm the creation of LocalVolumeSet is displayed.

    6. Click Yes to continue.
  5. In the Capacity and nodes page, configure the following:

    1. Available raw capacity is populated with the capacity value based on all the attached disks associated with the storage class. This takes some time to show up. The Selected nodes list shows the nodes based on the storage class.
    2. Optional: Select the Taint nodes checkbox to dedicate the selected nodes for OpenShift Data Foundation.
    3. Click Next.
  6. Optional: In the Security and network page, configure the following based on your requirement:

    1. To enable encryption, select Enable data encryption for block and file storage.
    2. Select one or both of the following Encryption level:

      • Cluster-wide encryption

        Encrypts the entire cluster (block and file).

      • StorageClass encryption

        Creates encrypted persistent volume (block only) using encryption enabled storage class.

    3. Optional: Select the Connect to an external key management service checkbox. This is optional for cluster-wide encryption.

      1. From the Key Management Service Provider drop-down list, either select Vault or Thales CipherTrust Manager (using KMIP). If you selected Vault, go to the next step. If you selected Thales CipherTrust Manager (using KMIP), go to step iii.
      2. Select an Authentication Method.

        Using Token authentication method
        • Enter a unique Connection Name, host Address of the Vault server ('https://<hostname or ip>'), Port number and Token.
        • Expand Advanced Settings to enter additional settings and certificate details based on your Vault configuration:

          • Enter the Key Value secret path in Backend Path that is dedicated and unique to OpenShift Data Foundation.
          • Optional: Enter TLS Server Name and Vault Enterprise Namespace.
          • Upload the respective PEM encoded certificate file to provide the CA Certificate, Client Certificate and Client Private Key .
          • Click Save and skip to step iv.
        Using Kubernetes authentication method
        • Enter a unique Vault Connection Name, host Address of the Vault server ('https://<hostname or ip>'), Port number and Role name.
        • Expand Advanced Settings to enter additional settings and certificate details based on your Vault configuration:

          • Enter the Key Value secret path in Backend Path that is dedicated and unique to OpenShift Data Foundation.
          • Optional: Enter TLS Server Name and Authentication Path if applicable.
          • Upload the respective PEM encoded certificate file to provide the CA Certificate, Client Certificate and Client Private Key .
          • Click Save and skip to step iv.
      3. To use Thales CipherTrust Manager (using KMIP) as the KMS provider, follow the steps below:

        1. Enter a unique Connection Name for the Key Management service within the project.
        2. In the Address and Port sections, enter the IP of Thales CipherTrust Manager and the port where the KMIP interface is enabled. For example:

          • Address: 123.34.3.2
          • Port: 5696
        3. Upload the Client Certificate, CA certificate, and Client Private Key.
        4. If StorageClass encryption is enabled, enter the Unique Identifier to be used for encryption and decryption generated above.
        5. The TLS Server field is optional and used when there is no DNS entry for the KMIP endpoint. For example, kmip_all_<port>.ciphertrustmanager.local.
      4. Select a Network.
    4. Select one of the following:

      • Default (SDN)

        If you are using a single network.

      • Custom (Multus)

        If you are using multiple network interfaces.

        1. Select a Public Network Interface from the dropdown.
        2. Select a Cluster Network Interface from the dropdown.

          Note

          If you are using only one additional network interface, select the single NetworkAttachementDefinition, that is,ocs-public-cluster for the Public Network Interface and leave the Cluster Network Interface blank.

    5. Click Next.
  7. In the Review and create page, review the configuration details.

    To modify any configuration settings, click Back to go back to the previous configuration page.

  8. Click Create StorageSystem.

Verification steps

  • To verify the final Status of the installed storage cluster:

    1. In the OpenShift Web Console, navigate to Installed OperatorsOpenShift Data FoundationStorage System
    2. Click ocs-storagecluster-storagesystemResources.
    3. Verify that the Status of the StorageCluster is Ready and has a green tick mark next to it.
  • To verify if the flexible scaling is enabled on your storage cluster, perform the following steps (for arbiter mode, flexible scaling is disabled):

    1. In the OpenShift Web Console, navigate to Installed OperatorsOpenShift Data FoundationStorage System
    2. Click ocs-storagecluster-storagesystemResourcesocs-storagecluster.
    3. In the YAML tab, search for the keys flexibleScaling in the spec section and failureDomain in the status section. If flexible scaling is true and failureDomain is set to host, flexible scaling feature is enabled:

      spec:
      flexibleScaling: true
      […]
      status:
      failureDomain: host

Additional resources

  • To expand the capacity of the initial cluster, see the Scaling Storage guide.

2.7. Verifying OpenShift Data Foundation deployment

To verify that OpenShift Data Foundation is deployed correctly:

2.7.1. Verifying the state of the pods

Procedure

  1. Click Workloads → Pods from the OpenShift Web Console.
  2. Select openshift-storage from the Project drop-down list.

    Note

    If the Show default projects option is disabled, use the toggle button to list all the default projects.

    For more information on the expected number of pods for each component and how it varies depending on the number of nodes, see Table 2.1, “Pods corresponding to OpenShift Data Foundation cluster”.

  3. Set filter for Running and Completed pods to verify that the following pods are in Running and Completed state:

    Table 2.1. Pods corresponding to OpenShift Data Foundation cluster

    ComponentCorresponding pods

    OpenShift Data Foundation Operator

    • ocs-operator-* (1 pod on any storage node)
    • ocs-metrics-exporter-* (1 pod on any storage node)
    • odf-operator-controller-manager-* (1 pod on any storage node)
    • odf-console-* (1 pod on any storage node)
    • csi-addons-controller-manager-* (1 pod on any storage node)

    Rook-ceph Operator

    rook-ceph-operator-*

    (1 pod on any storage node)

    Multicloud Object Gateway

    • noobaa-operator-* (1 pod on any storage node)
    • noobaa-core-* (1 pod on any storage node)
    • noobaa-db-pg-* (1 pod on any storage node)
    • noobaa-endpoint-* (1 pod on any storage node)

    MON

    rook-ceph-mon-*

    (3 pods distributed across storage nodes)

    MGR

    rook-ceph-mgr-*

    (1 pod on any storage node)

    MDS

    rook-ceph-mds-ocs-storagecluster-cephfilesystem-*

    (2 pods distributed across storage nodes)

    RGW

    rook-ceph-rgw-ocs-storagecluster-cephobjectstore-* (1 pod on any storage node)

    CSI

    • cephfs

      • csi-cephfsplugin-* (1 pod on each storage node)
      • csi-cephfsplugin-provisioner-* (2 pods distributed across storage nodes)
    • rbd

      • csi-rbdplugin-* (1 pod on each storage node)
      • csi-rbdplugin-provisioner-* (2 pods distributed across storage nodes)

    rook-ceph-crashcollector

    rook-ceph-crashcollector-*

    (1 pod on each storage node)

    OSD

    • rook-ceph-osd-* (1 pod for each device)
    • rook-ceph-osd-prepare-ocs-deviceset-* (1 pod for each device)

2.7.2. Verifying the OpenShift Data Foundation cluster is healthy

Procedure

  1. In the OpenShift Web Console, click StorageData Foundation.
  2. In the Status card of the Overview tab, click Storage System and then click the storage system link from the pop up that appears.
  3. In the Status card of the Block and File tab, verify that Storage Cluster has a green tick.
  4. In the Details card, verify that the cluster information is displayed.

For more information on the health of the OpenShift Data Foundation cluster using the Block and File dashboard, see Monitoring OpenShift Data Foundation.

2.7.3. Verifying the Multicloud Object Gateway is healthy

Procedure

  1. In the OpenShift Web Console, click StorageData Foundation.
  2. In the Status card of the Overview tab, click Storage System and then click the storage system link from the pop up that appears.

    1. In the Status card of the Object tab, verify that both Object Service and Data Resiliency have a green tick.
    2. In the Details card, verify that the MCG information is displayed.

For more information on the health of the OpenShift Data Foundation cluster using the object service dashboard, see link: Monitoring OpenShift Data Foundation.

2.7.4. Verifying that the specific storage classes exist

Procedure

  1. Click Storage → Storage Classes from the left pane of the OpenShift Web Console.
  2. Verify that the following storage classes are created with the OpenShift Data Foundation cluster creation:

    • ocs-storagecluster-ceph-rbd
    • ocs-storagecluster-cephfs
    • openshift-storage.noobaa.io
    • ocs-storagecluster-ceph-rgw

2.7.5. Verifying the Multus networking

To determine if Multus is working in your cluster, verify the Multus networking.

Procedure

Based on your Network configuration choices, the OpenShift Data Foundation operator will do one of the following:

  • If only a single NetworkAttachmentDefinition (for example, ocs-public-cluster) was selected for the Public Network Interface, then the traffic between the application pods and the OpenShift Data Foundation cluster will happen on this network. Additionally the cluster will be self configured to also use this network for the replication and rebalancing traffic between OSDs.
  • If both NetworkAttachmentDefinitions (for example, ocs-public and ocs-cluster) were selected for the Public Network Interface and the Cluster Network Interface respectively during the Storage Cluster installation, then client storage traffic will be on the public network and cluster network for the replication and rebalancing traffic between OSDs.

To verify the network configuration is correct, complete the following:

In the OpenShift console, navigate to Installed OperatorsOpenShift Data FoundationStorage Systemocs-storagecluster-storagesystemResourcesocs-storagecluster.

In the YAML tab, search for network in the spec section and ensure the configuration is correct for your network interface choices. This example is for separating the client storage traffic from the storage replication traffic.

Sample output:

[..]
spec:
  [..]
  network:
    ipFamily: IPv4
    provider: multus
    selectors:
      cluster: openshift-storage/ocs-cluster
      public: openshift-storage/ocs-public
  [..]

To verify the network configuration is correct using the command line interface, run the following commands:

$ oc get storagecluster ocs-storagecluster \
-n openshift-storage \
-o=jsonpath='{.spec.network}{"\n"}'

Sample output:

{"ipFamily":"IPv4","provider":"multus","selectors":{"cluster":"openshift-storage/ocs-cluster","public":"openshift-storage/ocs-public"}}

Confirm the OSD pods are using correct network

In the openshift-storage namespace use one of the OSD pods to verify the pod has connectivity to the correct networks. This example is for separating the client storage traffic from the storage replication traffic.

Note

Only the OSD pods will connect to both Multus public and cluster networks if both are created. All other OCS pods will connect to the Multus public network.

$ oc get -n openshift-storage $(oc get pods -n openshift-storage -o name -l app=rook-ceph-osd | grep 'osd-0') -o=jsonpath='{.metadata.annotations.k8s\.v1\.cni\.cncf\.io/network-status}{"\n"}'

Sample output:

[{
    "name": "openshift-sdn",
    "interface": "eth0",
    "ips": [
        "10.129.2.30"
    ],
    "default": true,
    "dns": {}
},{
    "name": "openshift-storage/ocs-cluster",
    "interface": "net1",
    "ips": [
        "192.168.2.1"
    ],
    "mac": "e2:04:c6:81:52:f1",
    "dns": {}
},{
    "name": "openshift-storage/ocs-public",
    "interface": "net2",
    "ips": [
        "192.168.1.1"
    ],
    "mac": "ee:a0:b6:a4:07:94",
    "dns": {}
}]

To confirm the OSD pods are using correct network using the command line interface, run the following command (requires the jq utility):

$ oc get -n openshift-storage $(oc get pods -n openshift-storage -o name -l app=rook-ceph-osd | grep 'osd-0') -o=jsonpath='{.metadata.annotations.k8s\.v1\.cni\.cncf\.io/network-status}{"\n"}' | jq -r '.[].name'

Sample output:

openshift-sdn
openshift-storage/ocs-cluster
openshift-storage/ocs-public