removing_node.md

Removing a node

In this lab you will safely remove a node from the Openshift Cluster.

$ oc get nodes

determine the node you want to remove, make it unschedulable

$ oc adm manage-node <node>  --schedulable=false

ensure it is correctly labeled as unschedulable

$ oc get nodes

e.g.

ip-172-31-21-67.us-east-2.compute.internal    Ready,SchedulingDisabled   compute   10d       v1.9.1+a0ce1bc657

evacuate pods

$ oc adm drain <node> --ignore-daemonsets --delete-local-data --force

check that the node has no running pods

$ oc adm manage-node <node> --list-pods

delete nodes

$ oc delete node <node>