Uncordon Node After Maintenance to Make it Schedulable Again

Problem

The Drain node operation being performed on nodes prior to the maintenance of hypervisors results in nodes to be in a Ready, SchedulingDisabled state once the maintenance is completed.

NAME            STATUS                ROLES    AGE  VERSION

NodeName   Ready,SchedulingDisabled   worker   34d  v1.12.9

The nodes will have NoSchedule taints on them.

Taints:            node.kubernetes.io/unreachable:NoSchedule                   node.kubernetes.io/unschedulable:NoSchedule

Environment

• Platform9 Managed Kubernetes - All Versions

Resolution

• Uncordon the nodes to make them schedulable again, thus resuming the procedure of scheduling pods onto it.

# kubectl uncordon [node name]

Additional Information

Safely Drain Node