PolarDB lets you schedule operations and management (O&M) tasks to run at a custom time. Supported task types include cluster upgrades, adding nodes, version upgrades, and primary zone changes. This topic explains how to view and cancel scheduled tasks in the PolarDB console.
Usage notes
Which tasks you can view
The Scheduled Tasks page shows details for the following task types only:
Cluster upgrade — see
Add nodes — see
Version upgrade — see
Primary zone change — see
Which tasks you can cancel
Only tasks with a Pending status can be canceled. Downgrade operations — such as node deletion and automatic or manual downgrade — cannot be canceled.
View scheduled tasks
Log on to the PolarDB console.
In the upper-left corner, select the region where your cluster is deployed.
In the left-side navigation pane, click Scheduled Tasks.
On the Scheduled Tasks page, review the task list. Each entry shows the Task ID, Status, Task Action, Start Time, End Time, and Execution Time.
The Task Action column displays the underlying API operation name. The supported values are:
ModifyDBClusterPrimaryZone: Changes the primary zone
ModifyDBNodeClass: Upgrades a cluster
CreateDBNodes: Adds nodes
UpgradeDBClusterVersion: Upgrades the version of a clusterThe Order ID is visible only when Task Action is
ModifyDBNodeClassorCreateDBNodes.
Cancel a scheduled task
Only tasks with a Pending status can be canceled. To cancel a task:
Log on to the PolarDB console.
In the upper-left corner, select the region where your cluster is deployed.
In the left-side navigation pane, click Scheduled Tasks.
Find the task to cancel, then click Cancel in the Actions column.
In the dialog box that appears, click OK.
Downgrade operations — such as node deletion and automatic or manual downgrade — cannot be canceled.
API reference
| Operation | Description |
|---|---|
| Queries the details of all scheduled tasks or a specified scheduled task that belongs to the current account. | |
| Cancels a specified scheduled task. |