Deleting a Node¶
Scenario¶
When a node in a CCE cluster is deleted, services running on the node will also be deleted. Exercise caution when performing this operation.
Constraints¶
VM nodes that are being used by CCE do not support deletion on the ECS page.
Deleting a node will cause PVC/PV data loss for the local PVs associated with the node. These PVCs and PVs cannot be restored or used again. In this scenario, the pod that uses the local PV is evicted from the node. A new pod is created and stays in the pending state. This is because the PVC used by the pod has a node label, due to which the pod cannot be scheduled.
Precautions¶
Deleting a node will lead to pod migration, which may affect services. Perform this operation during off-peak hours.
Unexpected risks may occur during the operation. Back up related data in advance.
While the node is being deleted, the backend will set the node to the unschedulable state.
Only worker nodes can be deleted.
Procedure¶
Log in to the CCE console and click the cluster name to access the cluster console.
In the navigation pane, choose Nodes. On the displayed page, click the Nodes tab.
Locate the target node and choose More > Delete in the Operation column.
In the Delete Node dialog box, click Yes.
Note
After the node is deleted, workload pods on the node are automatically migrated to other available nodes.
If the disks and EIPs bound to the node are important resources, unbind them first. Otherwise, they will be deleted with the node.