Updated on 2024-05-07 GMT+08:00
Deleting CNs
Scenarios
As service demand decreases, some CNs are left idle. To improve resource utilization, you can delete unnecessary coordinator nodes in GaussDB.
Precautions
- Deleting CNs does not interrupt ongoing services.
- You can only delete the CNs of instances that were deployed independently.
- At least one CN needs to be reserved for each DB instance.
- Before deleting a CN, ensure that the CN is not in a JDBC connection configuration, or the high availability of the JDBC connection may be affected.
- DDL operations will be rolled back when CNs are being deleted.
- PITR backup is suspended during the deletion and is automatically restored after deletion is complete.
- After the deletion is complete, a full backup is performed automatically.
- Before you delete CNs, you need to ensure that the instance status and all CNs are normal.
- If the CN to be deleted is CN_5001, the system will randomly select another CN to delete.
Procedure
- Log in to the management console.
- Click in the upper left corner and select a region and project.
- Click in the upper left corner of the page and choose .
- On the Instances page, click the name of the instance for which you want to delete CNs.
- In the DB Information area of the Basic Information page, delete CNs.
Parent topic: Instance Modifications
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