Chapter 3. Installing Service Registry on OpenShift

This chapter explains how to first install Service Registry and then how to set up your chosen registry storage option: AMQ Streams, embedded Infinispan, or PostgreSQL database.

Important

Service Registry storage in Infinispan or PostgreSQL is a Technology Preview feature only. 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 about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview.

Note

You can install more than one instance of Service Registry depending on your environment. The number of instances depends on your storage option, for example, your Kafka, Infinispan, or database cluster configuration, and on the number and type of artifacts stored in Service Registry.

3.1. Installing Service Registry from the OpenShift OperatorHub

You can install the Service Registry Operator on your OpenShift cluster from the OperatorHub. The OperatorHub is available from the OpenShift Container Platform web console and provides an interface for cluster administrators to discover and install Operators. For more details, see the OpenShift documentation.

Prerequisites

  • You must have cluster administrator access to an OpenShift cluster.

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. Create a new OpenShift project:

    1. In the left navigation menu, click Home > Project > Create Project.
    2. Enter a project name, for example, my-project, and click Create.
  3. In the left navigation menu, click Catalog > OperatorHub.
  4. In the Filter by keyword text box, enter Registry to find the Red Hat Integration - Service Registry Operator.
  5. Read the information about the Operator, and click Install. This displays the Create Operator Subscription page.
  6. Select your subscription settings, for example:

    • Installation Mode > A specific namespace on the cluster > my-project
    • Update Channel > serviceregistry-1.0
    • Approval Strategy > Manual
  7. Click Subscribe. This displays the Operators > Installed Operators page.
  8. Wait a few moments until the Status for the Service Registry Operator displays Succeeded and the subscription is Up to Date.

3.2. Installing AMQ Streams from the OpenShift OperatorHub

If you do not already have AMQ Streams installed, you can install the AMQ Streams Operator on your OpenShift cluster from the OperatorHub. The OperatorHub is available from the OpenShift Container Platform web console and provides an interface for cluster administrators to discover and install Operators. For more details, see the OpenShift documentation.

Prerequisites

  • You must have cluster administrator access to an OpenShift cluster
  • See Using AMQ Streams on OpenShift for detailed information on installing AMQ Streams. This section shows a simple example of installing using the OpenShift OperatorHub.

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. Change to the OpenShift project in which Service Registry is installed. For example, from the Project drop-down, select my-project.
  3. In the left navigation menu, click Catalog > OperatorHub.
  4. In the Filter by keyword text box, enter AMQ to find the Red Hat Integration - AMQ Streams Operator.
  5. Read the information about the Operator, and click Install. This displays the Create Operator Subscription page.
  6. Select your subscription settings, for example:

    • Installation Mode > A specific namespace on the cluster > my-project
    • Update Channel > amq-streams-1.5.x
    • Approval Strategy > Manual
  7. Click Subscribe. This displays the Operators > Installed Operators page.
  8. Wait a few moments until the Status for the AMQ Streams Operator displays Succeeded and the subscription is Up to Date.

3.3. Configuring Service Registry with AMQ Streams storage on OpenShift

This section explains how to configure Kafka-based storage for Service Registry using AMQ Streams on OpenShift. This storage option is suitable for production environments when persistent storage is configured for the Kafka cluster on OpenShift. You can install Service Registry in an existing Kafka cluster or create a new Kafka cluster, depending on your environment.

Prerequisites

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. If you do not already have a Kafka cluster configured, create a new Kafka cluster using AMQ Streams. For example, in the OpenShift OperatorHub:

    1. Click Installed Operators > Red Hat Integration - AMQ Streams.
    2. Under Provided APIs > Kafka, click Create Instance to create a new Kafka cluster.
    3. Edit the custom resource definition as appropriate, and click Create.

      Warning

      The default example creates a cluster with 3 Zookeeper nodes and 3 Kafka nodes with ephemeral storage. This temporary storage is suitable for development and testing only, and not for production. For more details, see Using AMQ Streams on OpenShift.

  3. After the cluster is ready, click Provided APIs > Kafka > my-cluster > YAML.
  4. In the status block, make a copy of the bootstrapServers value, which you will use later to deploy Service Registry. For example:

    status:
      conditions:
      ...
      listeners:
        - addresses:
            - host: my-cluster-kafka-bootstrap.my-project.svc
              port: 9092
          bootstrapServers: 'my-cluster-kafka-bootstrap.my-project.svc:9092'
          type: plain
      ...
  5. Create a Kafka topic to store the Service Registry artifacts:

    1. Under Provided APIs > Kafka Topic, click Create topic.
    2. Change the default topic name from my-topic to the required storage-topic.
  6. Create a Kafka topic to store the Service Registry global IDs:

    1. Under Provided APIs > Kafka Topic, click Create topic.
    2. Change the default topic name from my-topic to the required global-id-topic.
  7. Click Installed Operators > Red Hat Integration - Service Registry > ApicurioRegistry > Create ApicurioRegistry.
  8. Paste in the following custom resource definition, but use your bootstrapServers value that you copied earlier:

    apiVersion: apicur.io/v1alpha1
    kind: ApicurioRegistry
    metadata:
      name: example-apicurioregistry
    spec:
      configuration:
        persistence: "streams"
        streams:
          bootstrapServers: "my-cluster-kafka-bootstrap.my-project.svc:9092"
  9. Click Create and wait for the Service Registry route to be created on OpenShift.
  10. Click Networking > Route to access the new route for the Service Registry web console. For example:

    http://example-apicurioregistry.my-project.my-domain-name.com/

Additional resources

3.4. Configuring Service Registry with embedded Infinispan storage on OpenShift

This section explains how to configure Infinispan cache-based storage for Service Registry on OpenShift. This storage option is based on Infinispan community Java libraries embedded in the Quarkus-based Service Registry server. You do not need to install a separate Infinispan server using this storage option. This option is suitable for development or demonstration only, and is not suitable for production environments.

Important

Service Registry storage in Infinispan is a Technology Preview feature only. 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 about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview.

Prerequisites

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. Click Installed Operators > Red Hat Integration - Service Registry > ApicurioRegistry > Create ApicurioRegistry.
  3. Paste in the following custom resource definition:

    apiVersion: apicur.io/v1alpha1
    kind: ApicurioRegistry
    metadata:
      name: example-apicurioregistry
    spec:
      configuration:
        persistence: "infinispan"
        infinispan: # Currently uses embedded version of Infinispan
          clusterName: "example-apicurioregistry"
          # ^ Optional
  4. Click Create and wait for the Service Registry route to be created on OpenShift.
  5. Click Networking > Route to access the new route for the Service Registry web console. For example:

    http://example-apicurioregistry.my-project.my-domain-name.com/

Additional resources

3.5. Installing a PostgreSQL database from the OpenShift OperatorHub

If you do not already have a PostgreSQL database Operator installed, you can install a PostgreSQL Operator on your OpenShift cluster from the OperatorHub. The OperatorHub is available from the OpenShift Container Platform web console and provides an interface for cluster administrators to discover and install Operators. For more details, see the OpenShift documentation.

Important

Service Registry storage in a PostgreSQL database is a Technology Preview feature only. 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 about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview.

Prerequisites

  • You must have cluster administrator access to an OpenShift cluster.

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. Change to the OpenShift project in which Service Registry is installed. For example, from the Project drop-down, select my-project.
  3. In the left navigation menu, click Catalog > OperatorHub.
  4. In the Filter by keyword text box, enter PostgreSQL to find an Operator suitable for your environment, for example, Crunchy PostgreSQL for OpenShift or PostgreSQL Operator by Dev4Ddevs.com.
  5. Read the information about the Operator, and click Install. This displays the Create Operator Subscription page.
  6. Select your subscription settings, for example:

    • Installation Mode > A specific namespace on the cluster > my-project
    • Update Channel > stable
    • Approval Strategy > Manual
  7. Click Subscribe. This displays the Operators > Installed Operators page.
  8. Wait a few moments until the Status for the PostgreSQL Operator displays Succeeded and the subscription is Up to Date.

    Important

    You must read the documentation from your chosen PostgreSQL Operator for details on how to create and manage your database.

3.6. Configuring Service Registry with PostgreSQL database storage on OpenShift

This section explains how to configure Java Persistence API-based storage for Service Registry on OpenShift using a PostgreSQL database Operator. You can install Service Registry in an existing database or create a new database, depending on your environment. This section shows a simple example using the PostgreSQL Operator by Dev4Ddevs.com.

Important

Service Registry storage in a PostgreSQL database is a Technology Preview feature only. 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 about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview.

Prerequisites

Procedure

  1. In the OpenShift Container Platform web console, log in using an account with cluster administrator privileges.
  2. Change to the OpenShift project in which Service Registry and your PostgreSQL Operator are installed. For example, from the Project drop-down, select my-project.
  3. Create a PostgreSQL database for your Service Registry storage. For example, click Installed Operators > PostgreSQL Operator by Dev4Ddevs.com > Create database > YAML.
  4. Edit the database settings as follows:

    • name: Change the value to registry
    • image: Change the value to centos/postgresql-10-centos7
  5. Edit any other database settings as needed depending on your environment, for example:

    apiVersion: postgresql.dev4devs.com/v1alpha1
    kind: Database
    metadata:
      name: registry
      namespace: my-project
    spec:
      databaseCpu: 30m
      databaseCpuLimit: 60m
      databaseMemoryLimit: 512Mi
      databaseMemoryRequest: 128Mi
      databaseName: example
      databaseNameKeyEnvVar: POSTGRESQL_DATABASE
      databasePassword: postgres
      databasePasswordKeyEnvVar: POSTGRESQL_PASSWORD
      databaseStorageRequest: 1Gi
      databaseUser: postgres
      databaseUserKeyEnvVar: POSTGRESQL_USER
      image: centos/postgresql-10-centos7
      size: 1
  6. Click Create Database, and wait until the database is created.
  7. Click Installed Operators > Red Hat Integration - Service Registry > ApicurioRegistry > Create ApicurioRegistry.
  8. Paste in the following custom resource definition, and edit the values for the database url and credentials to match your environment:

    apiVersion: apicur.io/v1alpha1
    kind: ApicurioRegistry
    metadata:
      name: example-apicurioregistry
    spec:
      configuration:
        persistence: "jpa"
        dataSource:
          url: "jdbc:postgresql://SERVICE_NAME.NAMESPACE.svc:5432/"
          # e.g. url: "jdbc:postgresql://acid-minimal-cluster.my-project.svc:5432/"
          userName: "postgres"
          password: "PASSWORD"
          # ^ Optional
  9. Click Create and wait for the Service Registry route to be created on OpenShift.
  10. Click Networking > Route to access the new route for the Service Registry web console. For example:

    http://example-apicurioregistry.my-project.my-domain-name.com/