Rolling Back the Version of a DDM Instance

Scenarios

After a DDM instance is upgraded to a new version, the kernel version can be rolled back to the version before the last update.

Precautions

• Rolling back to the kernel version will restart your DDM instance, and this may interrupt your workloads for a while. Perform this upgrade during off-peak hours or make sure that your applications can be automatically reconnected.
• The version can only be rolled back to the version before the last upgrade.
• If nodes are added after version updates, you need to scale in the new nodes and then roll back the version.

Procedure

1. Log in to the DDM console.
2. On the Instances page, locate the instance whose version you want to upgrade and click its name.
3. On the Basic Information page, in the Instance Information area, click Roll Back Version beside the Version field.
4. In the displayed dialog box, click OK.
   Figure 1 Confirm rollback information
   

5. Confirm and click Yes.
6. When the rollback is under progress, the instance status changes to Rolling back.
7. After the rollback is complete, the instance status changes from Rolling back to Running, and the instance version becomes the target version.