ocm-ramen-samples

OCM Stateful application samples, including Ramen resources.

Initial setup

1. Clone this git repository to get started:
   • https://github.com/RamenDR/ocm-ramen-samples.git cd ocm-ramen-samples
2. Switch kubeconfig to point to the OCM Hub cluster
3. Setup the common OCM channel resources on the hub:
   • kubectl apply -k subscriptions/
   • The above creates:
     • A channel resource in the ramen-samples namespace and can be viewed using:
       • kubectl get channel -n ramen-samples ramen-gitops
     • A DRPolicy resource in the cluster namespace and can be viewed using:
       • kubectl get drpolicy

Sample application deployment

1. Deploy an OCM application and its related resources on the hub, for example:
   • kubectl apply -k subscriptions/busybox/
   • The above creates the required Subscription, PlacementRule and DRPlacementControl resources for the busybox application in the busybox-sample namespace and can be viewed using:
     • kubectl get placementrule -n busybox-sample
     • kubectl get -n busybox-sample subscriptions
     • kubectl get drplacementcontrol -n busybox-sample
2. Inspect subscribed resources from the channel created in the same namespace on the ManagedCluster selected by the PlacementRule, for example:
   • The busybox sample PlacementRule status can be viewed on the hub using:
     • kubectl get placementrule -n busybox-sample busybox-placement
   • Busybox subscribed resources, like the pod and the PVC can be viewed on the ManagedCluster using (example ManagedCluster cluster1):
     • kubectl --context=cluster1 get pods busybox-sample
     • kubectl --context=cluster1 get pvc -n busybox-sample

Testing failover

Under construction

Testing failback

Under construction