KubeZero/docs/worker.md

Operational guide for worker nodes

Replace worker node

In order to change the instance type or in genernal replace worker nodes do:

• (optional) Update the launch configuration of the worker group

• Make sure there is enough capacity in the cluster to handle all pods being evicted for the node

• kubectl drain --ignore-daemonsets node_name
  will evict all pods except DaemonSets. In case there are pods with local storage review each affected pod. After being sure no important data will be lost add --delete-local-data to the original command above and try again.

• Terminate instance matching node_name

The new instance should take over the previous node_name assuming only node is being replaced at a time and automatically join and replace the previous node.