Adding Replica Set Instance Nodes

Precautions

• To add nodes, instance status must be Available, Deleting backup, or Checking restoration.
• A DB instance cannot be deleted while nodes are being added.
• If there are any newly added standby nodes, they will be unable to participate in this switchover. When you add a new standby node, the HA connection address needs to be reconfigured, and the new node is frozen for 12 hours.
• Nodes cannot be manually deleted.

Procedure

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click Service List. Under Database, click Document Database Service to go to the DDS console.
4. On the Instances page, click the replica set instance name.
5. In the Node Information area on the Basic Information page, click Change Secondary Nodes.
6. Specify Total Nodes and click Next.

   You can add five or seven nodes.

7. On the displayed page, confirm the node configuration information.
   • If you need to modify your settings, click Previous to go back to the page for you to specify details.
   • If you do not need to modify your settings, click Submit to add the nodes.

8. View the result of adding nodes.
   • When a node is being added, the status of the instance is Adding node. The entire process takes about 15 minutes.
   • In the Node Information area, view the information about the nodes you added.