Creating a VRC

Learn how to manually create a VolumeReplicationClass (VRC) for a disaster recovery policy (DRPolicy).

About this task

Do this procedure if you created a DRPolicy with a schedule other than the default replication interval of 5 minutes (such as 10 or 15 minutes).

Procedure

Get the VRC details from one of the managed clusters associated with the DRPolicy.

For example:

oc get vrc

The output displays both flatten and normal mode VRCs of the managed cluster.

NAME                                            PROVISIONER
rbd-flatten-volumereplicationclass-1625360775   openshift-storage.rbd.csi.ceph.com
rbd-volumereplicationclass-1625360775           openshift-storage.rbd.csi.ceph.com

Copy the contents of both VRCs into YAML files.

For example:

oc get vrc rbd-volumereplicationclass-1625360775 -o yaml > ~/vrc_change.yaml

oc get vrc rbd-flatten-volumereplicationclass-1625360775 -o yaml  > ~/vrc_change_flatten.yaml

Replace the value of the schedulingInterval with the required value, as follows:
1. Open the YAML file.
  For example:
```
vi ~/vrc_change.yaml
```
2. Replace the schedulingInterval: 5m with the required value schedulingInterval: 15m.
3. Replace the rbd-volumereplicationclass-1625360775 with a new name, rbd-volumereplicationclass-15.
4. Repeat the same steps for the vrc_change_flatten.yaml file.

Create both the VRCs.

For example:

oc create -f ~/vrc_change.yaml

oc create -f ~/vrc_change_flatten.yaml

Repeat the same steps for the other managed cluster.