Configure alert rules

Procedure

1. Go to the CloudMonitor console.

   • Method 1: Log on to the CloudMonitor console.

   • Method 2:

     1. Log on to the CDN console.

     2. In the left navigation pane, click Domain Names.

     3. On the Domain Names page, click Monitor and Alert Settings in the upper-right corner to open the CloudMonitor console.

2. In the left-side navigation pane, choose Cloud Resource Monitoring > Cloud Service Monitoring.

3. On the Cloud Service Monitoring page, find and click CDN.

4. Click Create alert rule.

5. In the Create alert rule panel, configure the parameters in the following table and leave the others at their default values. For more information about other parameters, see Create an alert rule.

   Parameter	Description
   Product	Select CDN.
   Resource Range	The scope of resources to which the alert rule applies. Valid values: All Resources: The alert rule applies to all CDN domain names, including domain names that are added after the rule is created. Application Group: The alert rule applies to all domain names within a specified application group, including domain names that are added after the rule is created. Instance: The alert rule applies to one or more specified CDN domain names.
   Rule Description	The content of the alert rule. The parameters in this section specify the conditions that trigger an alert. To specify the rule description, perform the following steps: Click Add Rule and select a metric type. In the Configure Rule Description panel, enter a Alert Rule, then define the rule conditions. Simple Metric: Select a metric, then set its threshold and alert level. Combined Metrics: Select an alert level, then define an alert condition using two or more metrics. Note Multi-metric alert rules require the target resource to report data for every included metric. For example, if the rule includes a public network metric but the ECS instance has no public IP address, the alert does not trigger. Expression: Select an alert level, then define an alert expression. Dynamic Threshold: Smart threshold details: Overview | Create a smart threshold alert rule. Note For more information about how to specify complex alert conditions, see Alert rule expressions.
   Mute For	The interval at which CloudMonitor resends alert notifications before an alert is cleared. Valid values: 5 Minutes, 15 Minutes, 30 Minutes, 60 Minutes, 3 Hours, 6 Hours, 12 Hours, and 24 Hours. If a metric value reaches the threshold, CloudMonitor sends an alert notification. If the metric value reaches the threshold again within the mute period, CloudMonitor does not resend an alert notification. If the alert is not cleared after the mute period ends, CloudMonitor resends an alert notification. For example, if the Mute For parameter is set to 12 Hours and the alert is not cleared, CloudMonitor resends an alert notification after 12 hours.
   Effective At	The period during which the alert rule is effective. CloudMonitor sends alert notifications based on the alert rule only within the effective period. Note If an alert rule is not effective, no alert notification is sent. However, the alert history is still displayed on the Alert History page.
   Alert Contact Group	The alert contact groups to which alert notifications are sent. The alert notifications of the application group are sent to the alert contacts that belong to the selected alert contact groups. An alert contact group can contain one or more alert contacts. For more information about how to create an alert contact and an alert contact group, see Create an alert contact or an alert contact group.
   Tags	A tag for the alert rule. Each tag has a name and a value. Note You can add up to six tags.

6. Click OK.