Changing vCPUs and Memory

Scenarios

You can change the vCPUs and memory of all nodes. You can change the vCPUs and memory of your instance as needed. If an instance is overloaded and compute resources need to be added urgently, you are advised to add compute nodes first.

Usage Notes

• During online specification change, second-level intermittent disconnection occurs once when the change is performed on a single node. Therefore, the entire instance is intermittently disconnected for several times. The client must have an automatic reconnection mechanism. You are advised to perform the specification change during off-peak hours.
• For a node whose specifications are being changed, its computing tasks are handed over to other nodes. Change specifications of nodes during off-peak hours to prevent the instance from overload.
• After specifications of a standard instance with cloud native storage are changed, the system automatically adjusts the storage to the number of shards multiplied by shard specifications (GB).

Procedure

1. Log in to the Huawei Cloud console.
2. In the service list, choose Databases > GeminiDB.
3. On the Instances page, locate the target instance and choose More > Change Specifications in the Operation column.
   • Instance with classic storage
     Figure 1 Changing specifications
     
   • Figure 2 Changing specifications
     

   In the DB Information area on the Basic Information page, click Change under Node Specifications.

   • Instance with classic storage
     Figure 3 Changing specifications
     
   • Capacity-oriented instance with cloud native storage
     Figure 4 Changing specifications
     

4. On the displayed page, select a specification change mode and required specifications, and click Next.
   • Online change: During the change, instance nodes are upgraded in rolling mode, which has the minimum impact on services. The change duration is positively related to the number of nodes. Each node takes about 5 to 10 minutes. If there are a large number of nodes, wait patiently.
   • Offline change: During offline change, all nodes are changed concurrently, which interrupts services for about 10 to 20 minutes. Exercise caution when performing this operation. For your online production services, you are advised to perform the change online.
   • Instance with classic storage
     Figure 5 Changing specifications
     
   • Capacity-oriented instance with cloud native storage
     Figure 6 Changing specifications
     
   • Standard instance with cloud native storage
     Figure 7 Changing specifications
     

5. On the displayed page, confirm the specifications.
   • If you need to modify your settings, click Previous.
   • If you do not need to modify your settings, click Submit .

6. View the change results.

   In the DB Information area on the Basic Information page, you can see the new specifications.