How Can I Check Whether an ENI Is Used by a Cluster?

Scenarios

Pod subnets can be deleted from CCE Turbo clusters of v1.23.17-r0, v1.25.12-r0, v1.27.9-r0, v1.28.7-r0, v1.29.3-r0, or later versions.

Deleting a pod subnet from a cluster can be risky. It is important to ensure that none of the ENIs currently in use by the cluster belong to the subnet, including those being used by pods and pre-bound to pods.

Procedure

1. Log in to the CCE console and click the cluster name to access the cluster console.
2. In the navigation pane, choose Settings and click the Network tab.
3. In the Container Network area, copy the network ID of the subnet. (The default-network is used as an example.)

   

4. Log in to the VPC console. In the navigation pane, choose Virtual Private Cloud > Subnets. In the right pane, obtain the target subnet based on the network ID.
5. In the Resources area, locate Network Interfaces and click the number next to it. On the page displayed, check the network interfaces and supplementary network interfaces of the subnet.

   

6. Check the names or descriptions of the network interfaces. If the name or description of a network interface contains the ID of the cluster, it indicates that the network interface is used by the cluster. You can obtain the cluster ID on the Overview page of the CCE console.

   To delete the subnet ENIs used in the cluster, submit a service ticket.