Chapter 3. User tasks

Procedure

1. Create a new project in the Red Hat OpenShift Service on AWS web console for this procedure. This example uses a project called my-etcd.

2. Navigate to the Ecosystem Installed Operators page.

   The Operators installed on the cluster by the dedicated-admin and available for use are shown here as a list of cluster service versions (CSVs). Each CSV launches and manages the software provided by the Operator.

   Tip

   You can get this list from the CLI by running the following command:

   $ oc get csv

3. On the Installed Operators page, click the etcd Operator to view more details and available actions.

   As shown under Provided APIs, this Operator makes available three new resource types, including one for an etcd Cluster, the EtcdCluster resource.

   These objects work similarly to the built-in native Kubernetes ones, such as Deployment or ReplicaSet, but contain logic specific to managing etcd.

4. Create a new etcd cluster:

   1. In the etcd Cluster API box, click Create instance.
   2. Optional: Modify the minimal starting template of an EtcdCluster object, such as the size of the cluster.
   3. Click Create to finalize. This triggers the Operator to start up the pods, services, and other components of the new etcd cluster.
5. Click the example etcd cluster.

6. Click the Resources tab.

   Your project contains several resources that the Operator created and configured.

7. Verify that a Kubernetes service exists that allows you to access the database from other pods in your project.

8. Optional: To grant another user permission to create Operator-managed applications in the project, add the edit role by running the following command:

   $ oc policy add-role-to-user edit <user> -n <target_project>

   Users with the edit role in a project can create, manage, and delete Operator-managed application instances, such as an etcd cluster.