Changing Cluster Scale

Scenario

CCE allows you to change the number of nodes managed in a cluster.

Notes and Constraints

• This function is supported for clusters of v1.15 and later versions.
• Starting from v1.15.11, the number of nodes in a cluster can be changed to 2000. The number of nodes in a single master node cannot be changed to 1000 or more.
• Currently, a cluster can only be scaled out to a larger specification, but cannot be scaled in.
• During the specifications change, master nodes will be powered off and on, and the cluster cannot run properly. Perform the change during off-peak hours.
• Changing the cluster scale does not affect the services running in the cluster. However, the control plane (master nodes) will be interrupted for a short period of time. You are advised not to perform any other operations (such as creating workloads) during the change.
• Change failures will trigger a cluster rollback to the normal state. If the rollback fails, submit a service ticket.

Procedure

1. Log in to the CCE console. In the navigation pane, choose Clusters.
2. Click next to the cluster whose specifications need to be changed.
3. On the page displayed, select a new flavor for Target Flavor as required.
4. Click OK.

   You can click Operation Records in the upper left corner to view the cluster change history. The status changes from Executing to Successful, indicating that the cluster specifications are successfully changed.