PolarDB allows you to restart nodes. When the number of database connections reaches the upper limit or the database performance is compromised, you can manually restart nodes.

Considerations

If you restart nodes, the database connections may be interrupted. We recommend that you make appropriate service arrangements before you restart the nodes. Proceed with caution.

Procedure

  1. Log on to the PolarDB console.
  2. On the top of the page, select the region where the target cluster is located.
  3. Find the target cluster and click the cluster ID to go to the Overview page.
  4. In the upper-right corner of Database Nodes section for the Overview page, click the Icon icon to switch the display mode.
  5. Find the node that you want to start, and click Restart in the Actions column.
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    Note If your cluster version is PolarDB for MySQL 8.0, you can specify the innodb_fast_startup parameter as ON to accelerate the restart process. For more information about how to change parameter values, see Specify cluster parameters.
  6. In the message that appears, click OK.

Related API operations

API Description
RestartDBNode Restarts a specified node of a PolarDB cluster.