:Subscribe to system event notifications

Create a system event-triggered alert rule

1. Log on to the CloudMonitor console.
2. In the left-side navigation pane, choose Event Monitoring > System Event.
3. Click the Event Alert tab.
4. Click Create Alert Rule.
5. In the Create / Modify Event Alert panel, set the parameters of the system event-triggered alert rule.

   Parameter	Description
   Alert Rule Name	The name of the event-triggered alert rule.
   Product Type	The Alibaba Cloud service to which the event-triggered alert rule is applied. For more information about the Alibaba Cloud services supported by CloudMonitor, see Appendix 2: System events.
   Event Type	The type of the event that triggers alerts. For more information about the types of the events that are supported by each Alibaba Cloud service, see Appendix 2: System events.
   Event Level	The severity level of the event that triggers alerts. For more information about the severity levels of the events that are supported by each Alibaba Cloud service, see Appendix 2: System events.
   Event Name	The name of the event that triggers alerts. For more information about the names of the events that are supported by each Alibaba Cloud service, see Appendix 2: System events.
   Keyword Filtering	The keywords that are used to filter the alert rule. Valid values: Contains any of the keywords: If the alert rule contains any one of the specified keywords, no alert notification is sent. Does not contain any of the keywords: If the alert rule does not contain any one of the specified keywords, no alert notification is sent.
   SQL Filter	The SQL statement that is used to filter the alert rule.
   Resource Range	The range of the resources to which the event-triggered alert rule is applied. Valid values: All Resources: If the Resource Range parameter is set to All Resources, CloudMonitor sends an alert notification when the specified event occurs on a resource. Application Group: If the Resource Range parameter is set to Application Group, CloudMonitor sends an alert notification only when the specified event occurs on a resource in the application group.
   Contact Group	The contact group that receives alert notifications.
   Notification Method	The severity level and notification method of the event alert. Valid values: Critical (Email + DingTalk) Warning (Email + DingTalk) Info (Email + DingTalk)
   MNS Queue	The specified queue in Message Service (MNS) to which the event alert is delivered.
   Function Compute	The specified function of Function Compute to which the event alert is delivered.
   URL Callback	The URL that is used to receive the alert notifications sent from CloudMonitor by using HTTP POST requests. The URL must be accessible over the Internet. You can enter only an HTTP URL. For more information about how to set callback URLs, see Configure callbacks for system event-triggered alerts.
   Log Service	The specified Logstore in Log Service to which the event alert is delivered.
   Channel Silence Cycle	The interval at which CloudMonitor sends alert notifications until the alert that is triggered based on the alert rule is cleared. Valid values: 5 min, 15 min, 30 min, 60 min, 3 h, 6 h, 12 h, and 24 h.

6. Click OK.

Test a system event-triggered alert rule

1. Log on to the CloudMonitor console.
2. In the left-side navigation pane, choose Event Monitoring > System Event.
3. Click the Event Alert tab.
4. Find the alert rule that you want to test and click Test in the Actions column.
5. In the Create Event Test panel, select the event to be tested.
6. In the Content (JSON) section, edit the event content such as the instance ID.
7. Click OK.
   CloudMonitor generates an event based on the event content to trigger the alert rule.

References

In CloudMonitor, you can associate subsequent processing methods (such as Message Service queues) with alert rules to automatically handle the state change events of Elastic Compute Service (ECS) instances. For more information, see Automate O&M based on status change events of ECS instances.