You can create alert rules to monitor the usage and status of Alibaba Cloud service resources. If resource metrics meet specific alert conditions, alerts are triggered and CloudMonitor sends alert notifications. This way, you can identify and handle the exceptions of monitoring data at the earliest opportunity.

Procedure

  1. Log on to the CloudMonitor console.
  2. In the left-side navigation pane, choose Alerts > Alert Rules.
  3. On the Alert Rules page, click Create Alert Rule.
  4. In the Create Alert Rule panel, configure the parameters. The following table describes the parameters.
    Parameter Description
    Product The name of the Alibaba Cloud service that can be monitored by CloudMonitor. Example: RDS-DB.
    Resource Range The range of the resources to which the alert rule applies. Valid values:
    • All Resources: The alert rule applies to all resources of the specified cloud service.
    • Application Group: The alert rule applies to all resources in the specified application group of the specified cloud service.
    • Instances: The alert rule applies to the specified resources of the specified cloud service.
    Rule Description The content of the alert rule. The parameters in this section specify the conditions that trigger an alert. To configure the content of the alert rule, perform the following steps:
    1. Click Add Rule.
    2. In the Add Rule Description panel, specify the rule name, metric type, metrics, thresholds, and alert levels.
    3. Click OK.
    Mute For The interval at which CloudMonitor sends alert notifications until the alert that is triggered based on the alert rule is cleared. Valid values: 5 Minutes, 15 Minutes, 30 Minutes, 60 Minutes, 3 Hours, 6 Hours, 12 Hours, and 24 Hours.

    If the threshold value is exceeded, CloudMonitor sends an alert notification. If the threshold value is exceeded 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, Cloud Monitor resends an alert notification after 12 hours.

    Effective Period The period during which the alert rule is effective. CloudMonitor monitors the metrics and generates alerts only if the alert rule is effective.
    Alert Contact Group The alert contact group 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 group. An alert contact group can contain one or more alert contacts.

    For information about how to create an alert contact and an alert contact group, see Create an alert contact or alert contact group.

    Alert 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 information about how to configure alert callbacks, see Use the alert callback feature to send notifications about threshold-triggered alerts.
    Note You can click Advanced Settings to configure this parameter.
    Auto Scaling If you turn on Auto Scaling and an alert is triggered, the specified scaling rule is enabled. In this case, you must configure the Region, ESS Group, and ESS Rule parameters.
    Note You can click Advanced Settings to configure this parameter.
    Log Service If you turn on Log Service and an alert is triggered, the alert information is written to the specified Logstore in Log Service. In this case, you must configure the Region, ProjectName, and Logstore parameters.

    For information about how to create a project and a Logstore, see Getting Started.

    Note You can click Advanced Settings to configure this parameter.
    Message Service - topic If you turn on Message Service - topic and an alert is triggered, the alert information is written to the specified topic in Message Service (MNS). In this case, you must configure the Region and topicName parameters.

    For information about how to create a topic, see Create a topic.

    Note You can click Advanced Settings to configure this parameter.
    Method to handle alerts when no monitoring data is found The method that is used to handle alerts when no monitoring data is found. Valid values:
    • Do not do anything (default value)
    • Send alert notifications
    • Treated as normal
    Note You can click Advanced Settings to configure this parameter.
    Tag The tags of the alert rule. A tag consists of a name and a value.
  5. Click OK.