Changing the Number of Nodes for a Proxy Instance

Scenarios

You can change the number of proxy instance nodes as required.

Constraints

• Your GaussDB(for MySQL) instance must be available.
• If a proxy instance is abnormal, you can only add nodes to it but cannot reduce nodes.
• The number of proxy nodes ranges from 2 to 32.
• The number of proxy nodes ranges from 2 to 16.

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, choose Databases > GaussDB(for MySQL).
4. On the Instances page, click the target DB instance name to go to the Basic Information page.
5. In the navigation pane on the left, choose Database Proxy. Click the name of a proxy instance.
6. In the Proxy Instance Information area, click Change next to Proxy Instance Nodes.
7. In the displayed dialog box, set the number of proxy instance nodes and click OK.
   Number of recommended proxy instance nodes = (Number of vCPUs of the primary node + Total number of vCPUs of all read replicas)/(4 x Number of vCPUs of the proxy instance), rounded up.

   Figure 1 Changing the number of proxy nodes
   

APIs

• Adding Proxy Nodes

• Querying Proxy Instances
• Deleting Proxy Nodes