Changing Cluster Scale

Scenario

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

Notes and Constraints

• A cluster that has only one master node supports fewer than 1000 worker nodes.
• The number of master nodes cannot be changed when you modify cluster specifications.
• A cluster can only be scaled out to a larger specification, but cannot be scaled in.
• To ensure proper cluster functionality, perform any specifications changes during off-peak hours. This is because master nodes will need to be powered off and on, which can disrupt normal operations.

Procedure

1. Log in to the CCE console. In the navigation pane, choose Clusters.
2. Locate the cluster whose specifications need to be modified, click ... to view more operations on the cluster, and choose Modify Specifications.
   Figure 1 Modifying specifications
   

3. On the page displayed, select a new cluster scale.
4. Click Next to confirm the specifications and click OK.

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

   

   After the cluster scale is changed to 1000 nodes or more, some parameter values of the cluster will be automatically adjusted to ensure the cluster performance. For details, see Modifying Cluster Configurations.

   Figure 2 Operation records