MongoDB allows you to set alarm rules based on monitoring items.
For more information about monitoring items, see Monitoring items.
Log on to the MongoDB console and locate the target instance.
Click the instance ID or Manage to access the Basic Information page.
In the left-side navigation pane, click Alarm Rules.
Click Set Alarm Rule to go to the CloudMonitor console.
Click Replica Set Instance List or Cluster Instance List, select one or more instances, and click Set Alarm Rules.
Set the parameters in the Set Alarm Rules and Notification Method areas.
Note: To view the alarm history of an alarm rule, click View of an alarm on the Alarm Rules tab page.