Kubernetes Nodes: Ready,SchedulingDisabled

Check nodes status

# kubectl get nodes
NAME       STATUS                     ROLES    AGE   VERSION
srv2020   Ready                      master   24h   v1.17.0
srv2021   Ready,SchedulingDisabled   <none>   23h   v1.17.0

Remove a node from service

# kubectl drain srv2021

Put a node back to service

# kubectl uncordon srv2021
node/srv2021 uncordoned