Graceful Shutdown of an Openshift 4 Cluster
This SOP should be followed in the following scenarios:
-
Graceful full shut down of the Openshift 4 cluster is required.
Steps
Prequisite steps:
- Follow the SOP for cordoning and draining the nodes.
- Follow the SOP for creating an etcd
backup.
-
Connect to the
os-control01
host associated with this ENV. Become rootsudo su -
. -
Get a list of the nodes
nodes=$(oc get nodes -o name | sed -E "s/node\///")
-
Shutdown the nodes from the administration box associated with the cluster
ENV
eg production/staging.for node in ${nodes[@]}; do ssh -i /root/ocp4/ocp-<ENV>/ssh/id_rsa core@$node sudo shutdown -h now; done
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