You can rebind a security group to your cluster in the Container Service console. The system re-creates a security group, binds this new security group to your cluster, and adds the nodes in your cluster to this new security group.
Log on to the Container Service console.
Click Clusters in the left-side navigation pane.
On the Cluster List page, click Manage at the right of a cluster.
The Rebind Security Group dialog box opens. Click Confirm.