Chapter 10. Application failover between managed clusters

Procedure

1. On the Hub cluster navigate to Installed Operators and then click Openshift DR Hub Operator.
2. Click DRPlacementControl tab.
3. Click DRPC busybox-drpc and then the YAML view.

4. Add the action and failoverCluster details as shown in below screenshot. The failoverCluster should be the ACM cluster name for the Secondary managed cluster.

   DRPlacementControl add action Failover

   

5. Click Save.

6. Verify that the application busybox is now running in the Secondary managed cluster, the failover cluster ocp4perf2 specified in the YAML file.

   $ oc get pods,pvc -n busybox-sample

   Example output:

   NAME          READY   STATUS    RESTARTS   AGE
   pod/busybox   1/1     Running   0          35s
   
   NAME                                STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS                  AGE
   persistentvolumeclaim/busybox-pvc   Bound    pvc-79f2a74d-6e2c-48fb-9ed9-666b74cfa1bb   5Gi        RWO            ocs-storagecluster-ceph-rbd   35s

7. Verify that busybox is no longer running on the Primary managed cluster.

   $ oc get pods,pvc -n busybox-sample

   Example output:

   No resources found in busybox-sample namespace.