Shutting down a cluster node is one way to disable it, but you must also learn how to remove a cluster node from a running cluster configuration. Removing a cluster node from a cluster configuration does not require cluster service downtime, unless the cluster service is running on the cluster node you would like to remove.
Before you start the procedure of removing a cluster node from the cluster configuration, make sure that no cluster resources and services are running on the node.
You can remove a cluster node from an existing configuration by following these steps:
corosync.confconfiguration file on all cluster nodes and remove the desired cluster node from the