Restart an ApsaraDB for MongoDB instance

Precautions

• When you restart an instance, all its nodes are restarted in turn and each node has a brief disconnection of about 30 seconds. If the instance houses more than 10,000 collections, the brief disconnections last longer. Therefore, we recommend that you restart an instance during off-peak hours or make sure that your application is configured to reconnect to the instance after it is disconnected.
• When you restart a replica set instance, a primary/secondary switchover may occur and cause the roles of connected nodes to change. We recommend that you use a connection string URI to connect to the instance to avoid impact on the read/write operations of your application. For more information, see Overview of replica set instance connections.
• You can restart a sharded cluster instance, or a mongos or shard in the instance. This kind of nodes are inaccessible until restarted.

Restart an instance

1. Log on to the ApsaraDB for MongoDB console.
2. In the upper-left corner of the page, select the resource group and the region of the target instance.
3. In the left-side navigation pane, click Replica Set Instances or Sharded Cluster Instances based on the instance type.
4. Find the target instance and choose > Restart in the Actions column.
   Note Alternatively, you can click the ID of the target instance. On the Basic Information page that appears, click Restart Instance in the upper-right corner.
5. In the Restart Instance message that appears, click OK.
   The instance status changes to Rebooting. When the instance enters the Running state, the restart is complete.

Restart a node in a sharded cluster instance

1. Log on to the ApsaraDB for MongoDB console.
2. In the upper-left corner of the page, select the resource group and the region of the target instance.
3. In the left-side navigation pane, click Sharded Cluster Instances.
4. Find the target instance and click its ID.
5. Follow these steps to restart a node:
   • Restart a mongos.

     In the Mongos List section, find the target mongos and choose > Restart in the Operation column.

     
   • Restart a shard.

     In the Shard List section, find the target shard and choose > Restart in the Operation column.

     
6. In the Restart Node message that appears, click OK.
   The instance status changes to Rebooting. When the instance enters the Running state, the restart is complete.