ocm-ramen-samples

OCM Stateful application samples, including Ramen resources.

Initial setup

Clone this git repository to get started:
- https://github.com/RamenDR/ocm-ramen-samples.git cd ocm-ramen-samples
Switch kubeconfig to point to the OCM Hub cluster
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

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
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