After you delete a worker node from a container cluster, Kubernetes automatically schedules the containers running on the node to other worker nodes that have sufficient resources. If no appropriate worker nodes are available, the containers change to the Pending state.
You can delete any nodes in a cluster except the first three controller nodes.
Open the container cluster page, as shown in "View detailed information about a container cluster."
Click the Nodes tab.
Select worker nodes, and then click Delete. Alternatively, click Delete in the Actions column for a worker node.