You might need to set a manager node to a worker node in the following situations:
- Increase the cluster load capacity reasonably: Allocating the numbers of manager nodes and worker nodes reasonably helps improve the load capacity of the cluster. In a small cluster, you can set excessive manager nodes to worker nodes as appropriate.
- Cluster maintenance plan: When a manager node is taken offline for maintenance, a worker node is set as a manager node, and when the manager node for maintenance is relaunched, the worker node formerly set as a manager node will be set as a worker node again.
When the cluster is being expanded and contains three or more manager nodes, newly added nodes will be set as worker nodes automatically a period of time after being added to the cluster.
When the cluster has only one manager node, you cannot set the manager node as a worker node.
Log on to the Container Service console.
Click Nodes in the left-side navigation pane.
Select the cluster in which the node resides from the Cluster list.
Click More at the right of the node and then click Demote from the list.
In the confirmation dialog box, click Confirm.