Kubernetes - Cordon/Drain a pod and node for upgrading OS within a K8s Cluster

See which pods are running on which nodes:

kubectl get pods -o wide


Evict the pods on a node and the node(s) too:

kubectl drain <nodename> --ignore-daemonsets


Watch as the node changes status:

kubectl get nodes -w


Schedule pods to the node after maintenance is complete:

kubectl uncordon <nodename>