Manually Scaling Down Storage Space of a GeminiDB Influx Instance

Scenarios

As data volumes decrease, you can scale down storage space to avoid low database node utilization and resource waste.

Usage Notes

• To scale down storage, ensure the new storage space is at least 1.25 times more than the used space and rounded up.
• Storage scaling does not interrupt your services. After storage space is scaled, you do not need to restart your instance.
• You can only scale down classic storage of instances in a performance-enhanced cluster.

Setting an Instance Status to Read-only

To ensure that the GeminiDB Influx instance can still run properly when the storage space is about to be used up, the database is set to read-only, and data cannot be modified. If this happens, you can scale up the storage to restore the database status to read/write.

Method 1

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 > Scale Storage Space in the Operation column.
   Figure 1 Scaling storage space
   

4. On the displayed page, specify the new storage space and click Next.
   Figure 2 Scaling storage space
   

   Select at least 1 GB each time, and the value must be an integer.

5. On the displayed page, confirm the storage space.
   • Yearly/Monthly
     • To modify your settings, click Previous.
     • If you do not need to modify your settings, click Next and complete the payment.
   • Pay-per-use
     • To modify your settings, click Previous.
     • If you do not need to modify your settings, click Submit.

6. Check the results.
   • During the scale-down process, the instance status becomes Scaling storage space.
   • After the scaling task is complete, the instance status becomes Available.
   • Click the instance name. In the Storage Space area on the Basic Information page, check the new storage space.

Method 2

1. Log in to the Huawei Cloud console.
2. In the service list, choose Databases > GeminiDB.
3. On the Instances page, click the target instance.
4. In the Specification Information area on the Basic Information page, click Scale .
   Figure 3 Scaling storage space
   

5. On the displayed page, specify the new storage space and click Next.
   Figure 4 Scaling storage space
   

   Select at least 1 GB each time, and the value must be an integer.

6. On the displayed page, confirm the storage space.
   • Yearly/Monthly
     • To modify your settings, click Previous.
     • If you do not need to modify your settings, click Next and complete the payment.
   • Pay-per-use
     • To modify your settings, click Previous.
     • If you do not need to modify your settings, click Submit.

7. Check the results.
   • During the scale-down process, the instance status becomes Scaling storage space.
   • After the scaling task is complete, the instance status becomes Available.
   • Click the instance name. In the Storage Space area on the Basic Information page, check the new storage space.