Graceful Shutdown of an Openshift 4 Cluster

This SOP should be followed in the following scenarios:

• Shutting down an Openshift 4 cluster.

Steps

Prequisite steps:

• Follow the SOP for cordoning and draining the nodes.
• Follow the SOP for creating an etcd backup.

1. Get the nodes

nodes=$(oc get nodes -o name  | sed -E "s/node\///")

1. Shutdown the nodes from the administration box associated with the cluster eg prod/staging.

for node in ${nodes[@]}; do ssh -i <ssh_key> core@$node sudo shutdown -h now; done

Resources

• [1] Graceful Cluster Shutdown