Configuring the Maintenance Window

Scenarios

A maintenance window is a scheduled time period during which Huawei Cloud O&M personnel are authorized to perform maintenance tasks. To prevent unexpected interruptions during maintenance, set the maintenance window to off-peak hours. The default maintenance window is 02:00–06:00 and you can adjust it as required.

Precautions

• Before maintenance is performed, DDS will send SMS and email notifications to the contact person you specified in the Huawei account.
• During the maintenance window, the DB instance may be intermittently disconnected once or twice. Ensure that your applications can reconnect to the database if the connection is interrupted.
• During DB instance maintenance, operations for service changes (such as upgrade and restart) are unavailable except account management, database management, and security group adding. When a DB instance is in maintenance, data access and query operations on the database are not affected.
• Changing the maintenance window does not affect the execution of tasks that have been scheduled.
• You can configure a maintenance window only for restarting a DB instance, changing an instance class, or upgrading the minor version of a DB instance.
• You can cancel a scheduled task to be executed on the Task Center page.
• The maintenance window cannot overlap the time window configured for backups. Otherwise, scheduled tasks may fail.
• Tasks delivered near the end of the maintenance window may fail to be scanned. In this case, the execution is canceled.

Changing a Maintenance Window

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click in the upper left corner of the page and choose Databases > Document Database Service.
4. On the Instances page, click the instance name. In the DB Information area on the Basic Information page, click Change in the Maintenance Window field.
   Figure 1 Changing the maintenance window
   

5. In the displayed dialog box, select an interval and a maintenance window, and click OK.
   Figure 2 Changing the maintenance window
   

Canceling a Scheduled Task

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click in the upper left corner of the page and choose Databases > Document Database Service.
4. Click the Scheduled Tasks tab on the Task Center page, locate a scheduled task, and click Cancel in the Operation column.
   Figure 3 Canceling a task
   

5. View the result.

   You can view the result on the Task Center > Scheduled Tasks page. When the task is cancelled, its status changes to Cancelled.