Shutdown OCP4.6 Gracefully

graceful_shutdown_ocp.sh

#!/bin/bash

# Ref: https://docs.openshift.com/container-platform/4.6/backup_and_restore/graceful-cluster-shutdown.html

# !!!IMPORTANT!!!
# DO THE ETCD BACKUP FISRT
# https://gist.github.com/pichuang/53aef7091245c55a91a5f0bd56fa3256

non_master_nodes=$(oc get nodes --selector='!node-role.kubernetes.io/master' -o jsonpath='{.items[*].metadata.name}')
for node in ${non_master_nodes[@]}
do
    echo "==== Shut down $node ===="
    ssh core@$node sudo shutdown -h 1
done

sleep 3

master_nodes=$(oc get nodes -l node-role.kubernetes.io/master -o jsonpath='{.items[*].metadata.name}')
for node in ${master_nodes[@]}
do
    echo "==== Shut down $node ===="
    ssh core@$node sudo shutdown -h 1
done