Restart a node in the PolarDB console to resolve database connection or performance issues.
Usage notes
A transient disconnection of less than one minute may occur during the restart. Schedule restarts during off-peak hours and make sure your application has a reconnection mechanism.
The time required depends on your data volume and may take several hours. Proceed with caution.
After a read-only node restarts, new read-write splitting connections automatically route requests to that node. Existing connections established before the restart are not affected. To route traffic from existing connections to the restarted node, restart your application.
Procedure
Restart a node in a Centralized cluster
Log on to the PolarDB console. In the left navigation pane, click Clusters. Select the region of your cluster, then click the cluster ID to open the cluster details page.
On the Basic Information page, go to the Database Nodes section. Click the
icon in the upper-right corner to switch the view.Find the node and click Restart in the Actions column.
In the dialog box that appears, click OK.
Restart a node in a Distributed cluster
Log on to the PolarDB console. In the left navigation pane, click Clusters. Select the region of your cluster, then click the cluster ID to open the cluster details page.
On the Basic Information page, go to the Cluster Topology section and find the node. The location of the Restart button depends on your current view:
Detailed View: Click Restart in the upper-right corner of the node.
List View: Click Restart in the Actions column.
In the dialog box that appears, click OK.
API reference
| API | Description |
|---|---|
| RestartDBNode | Restarts a database node. |