Chapter 4. Deploying Service Registry storage in a PostgreSQL database

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 you want to install the PostgreSQL Operator. For example, from the Project drop-down, select my-project.
3. In the left navigation menu, click Operators and then 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.
5. Read the information about the Operator, and click Install to display the Operator subscription page.

6. Select your subscription settings, for example:

   • Update Channel: stable
   • Installation Mode: A specific namespace on the cluster and then my-project
   • Approval Strategy: Select Automatic or Manual

7. Click Install, and wait a few moments until the Operator is ready for use.

   Important

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

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, and then Create database.

4. Click YAML and edit the database settings as follows:

   • name: Change the value to registry
   • image: Change the value to centos/postgresql-12-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-12-centos7
     size: 1

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6. Click Create, 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: registry.apicur.io/v1
   kind: ApicurioRegistry
   metadata:
     name: example-apicurioregistry-sql
   spec:
     configuration:
       persistence: 'sql'
       sql:
         dataSource:
           url: 'jdbc:postgresql://<service name>.<namespace>.svc:5432/<database name>'
           # e.g. url: 'jdbc:postgresql://acid-minimal-cluster.my-project.svc:5432/registry'
           userName: 'postgres'
           password: '<password>' # Optional

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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-sql.my-project.my-domain-name.com/

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Procedure

1. Enter the following command to create the database:

    $ createdb -T template0 dbname

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2. Enter the following command to restore the SQL dump

    $ psql dbname < dumpfile

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3. Run ANALYZE on each database so the query optimizer has useful statistics.