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.
• Currently, only cluster instances support node addition.

Method 1

1. Log in to the GeminiDB 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 navigation pane, choose Node Management.

5. Click Add Node, on the displayed page, specify the number of nodes to be added and view the storage of the instance.
   • If the storage is sufficient, click Next and go to 12.
   • If the storage is insufficient, click Next and go to 8.

   

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

6. On the Scale Storage Space page, select your target storage capacity and click Next.
   Figure 1 Storage change
   

7. After the storage capacity is expanded, go to 3 to add nodes again.
8. 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 your settings, click Previous.
     • If you do not need to modify your settings, click Submit.

Method 2

1. Log in to the GeminiDB 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 2 Adding nodes
   

4. On the Add Node page, specify the number of nodes to be added and view the storage of the instance.
   • If the storage capacity is sufficient, click Next and go to 7.
   • If the storage capacity is insufficient, click Next and go to 5.

   

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

5. On the Scale Storage Space page, select your target storage capacity and click Next.
   Figure 3 Storage change
   

6. After the storage is scaled up, go to 5 to add nodes again.
7. 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 your settings, click Previous.
     • If you do not need to modify your settings, click Submit.