Adding Nodes

Scenarios

This section describes how to add nodes to an instance to suit your service requirements. You can also delete a node as required. For details, see Deleting Nodes.

Precautions

• Adding nodes will trigger fast load balancing, which may cause a request timeout for a few seconds. Enable automatic retry for services.
• You can add nodes only when the instance status is Available or Checking restoration.
• An instance cannot be deleted when one or more nodes are being added.
• If the storage is insufficient, adding nodes is not supported. Expand the storage first. For details about the storage supported by instances of different specifications, see Instance Specifications.

Method 1

1. Log in to the management console.
2. In the service list, choose Databases > GeminiDB.
3. On the Instances page, locate the instance you want to add nodes for and click its name.
4. In the Node Information area on the Basic Information page, click Add Node.
   Figure 1 Adding nodes
   

5. Specify Add Nodes and click Next.
   Figure 2 Add Node
   

   New nodes are of the same specifications as existing nodes. Once a new node is added, its specifications cannot be changed.

6. On the displayed page, confirm the node configuration details.
   • For yearly/monthly instances
     • If you need to modify your settings, click Previous.
     • If you do not need to modify your settings, click Submit and complete the payment.
   • For pay-per-use instances
     • If you need to modify the settings, click Previous.
     • If you do not need to modify the settings, click Submit.

7. View the results.
   • The status of the DB instance in the instance list is Adding node.
   • After the nodes are added, the DB instance status becomes Available.
   • Click the instance name. In the Node Information area on the Basic Information page, view the information about the new nodes.

Method 2

1. Log in to the management console.
2. In the service list, choose Databases > GeminiDB.
3. On the Instances page, locate the instance which you want to add nodes for, click its name, and choose More > Add Node in the Operation column.
   Figure 3 Adding nodes
   

4. Specify Add Nodes and click Next.
   Figure 4 Add Node
   

   New nodes are of the same specifications as existing nodes. Once a new node is added, its specifications cannot be changed.

5. On the displayed page, confirm the node configuration details.
   • For yearly/monthly instances
     • If you need to modify your settings, click Previous.
     • If you do not need to modify your settings, click Submit and complete the payment.
   • For pay-per-use instances
     • If you need to modify the settings, click Previous.
     • If you do not need to modify the settings, click Submit.

6. View the results.
   • The status of the DB instance in the instance list is Adding node.
   • After the nodes are added, the DB instance status becomes Available.
   • Click the instance name. In the Node Information area on the Basic Information page, view the information about the new nodes.