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Changing the CPU or Memory of a Replica Set DB Instance
Updated on 2022-02-22 GMT+08:00
Changing the CPU or Memory of a Replica Set DB Instance
Scenarios
This section describes how to change the CPU or memory of your replica set instance.
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- A DB instance cannot be deleted when you are changing its CPU or memory.
- Instances can be scaled up or down.
- When the CPU and memory specifications are changed, a primary/secondary switchover may occur once or twice and the database connection will be interrupted for up to 30s. You are advised to change the specifications during off-peak hours to reduce impacts and ensure that the service system of your client can reconnect to the database if the connection is interrupted.
Procedure
- Log in to the DDS console.
- On the Instance Management page, locate the target replica set instance and choose Operation column. in the
- On the displayed page, modify required parameters and click Submit.
- On the displayed page, confirm the instance class.
- If you need to modify your settings, click Previous to go back to the page for you to specify details.
- If you do not need to modify your settings, click Submit to change the instance class.
- View the DB instance class change result.
- When the CPU or memory of a DB instance is being changed, the status displayed in the Status column is Changing instance class. This process takes about 25 to 30 minutes.
- In the upper right corner of the DB instance list, click
to refresh the list. The instance status changes to Available.
- Go to the Basic Information page of the replica set instance you scaled up and check whether the scaling up is successful in the DB Information area.
Parent topic: Instance Management
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