Restarting OpenShift master and node services

To apply master or node configuration changes, you must restart the respective services.

To reload master configuration changes, restart master services running in control plane static pods using the master-restart command:

# master-restart api 
# master-restart controllers

To reload node configuration changes, restart the node service on the node host:

# systemctl restart atomic-openshift-node

ref: https://docs.okd.io/latest/installconfig/masternodeconfiguration.html#master-node-config-restart-services