Adding Coordinator Nodes for an Instance (Distributed)

Scenarios

As the instance deployment time and data increase, the database performance and storage will gradually reach the bottleneck. Adding nodes can improve the instance performance and storage capacity. You can only add nodes for distributed GaussDB instances that are deployed independently.

Precautions

• You can flexibly add coordinator nodes (CNs) or shards as needed. It is recommended that the number of CNs of a GaussDB instance do not exceed twice the number of shards.
• Instances can be scaled out only when they are in the Available state.

Procedure

1. Log in to the management console.
2. Click in the upper left corner and select a region and project.
3. Click in the upper left corner of the page and choose Databases > GaussDB.
4. On the Instances page, click the name of the target instance.
5. On the Basic Information page, click Add in the Coordinator Nodes field in the DB Information area.
6. Specify the number of coordinator nodes to be added and the AZ.

   If single-AZ deployment is specified during the instance creation, CNs are only added to the AZ you specified.

7. Click Next.
8. Confirm the information and click Submit.
9. Check the result.

   On the Instances page, check that the instance is in the Adding CNs state during the scale-out. After the instance status changes to Available, click the instance name. On the Basic Information page, check that the number of CNs matches the required quantity.