Context
In the Unbalanced state, the number of primary instances on some nodes increases. As a result, the load pressure is high. In this case, the cluster is normal, but the overall performance is lower than that in the balanced state. During off-peak hours, you are advised to perform a switchback to restore the primary/standby relationship of your cluster.
- Only 8.1.1.202 and later versions support primary/standby switchback.
- You are advised to perform a switchback during off-peak hours. Switchback interrupts services for a short period of time. The actual interruption duration depends on your service volume.
Procedure
- Log in to the GaussDB(DWS) management console.
- On the Clusters page, find a cluster in Unbalanced state.
- In the Operation column of the cluster, choose .
- In the dialog box that is displayed, confirm that the service is in off-peak hours, and click Yes. A message will be displayed in the upper right corner, indicating that the switchback request is being processed.
- Check the cluster status. During the switchback, the cluster status is Switching back. After the switchback, the cluster status will change to Available.
