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CloudMonitor:Create an alert rule

Last Updated:Jul 11, 2023

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 monitoring data exceptions 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. For example, you can select ApsaraDB RDS.

    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 Groups: 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 specify the rule description, 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.

    Note

    For information about how to specify complex alert conditions, see Alert rule expressions.

    Mute For

    The interval at which CloudMonitor resends alert notifications before the 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, Cloud Monitor resends an alert notification after 12 hours.

    Effective Period

    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 specified alert contact groups. 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.

    Tag

    The tags of the alert rule. A tag consists of a key and a value.

    Note

    You can set a maximum of six tags.

    Alert Callback

    The callback URL that can be accessed over the Internet. CloudMonitor sends HTTP POST requests to push alert notifications to the specified URL. You can enter only an HTTP URL. For more information about how to configure alert callback, see Use the alert callback feature to send notifications about threshold-triggered alerts.

    To test the connectivity of an alert callback URL, perform the following steps:

    1. Click Test next to the callback URL.

      In the Webhook Test panel, you can check and troubleshoot the connectivity of the alert callback URL based on the returned status code and test result details.

      Note

      To obtain the details of the test result, configure the Test Template Type and Language parameters and click Test.

    2. Click Close.

    Note

    You can click Advanced Settings to configure this parameter.

    Auto Scaling

    If you turn on Auto Scaling, the specified scaling rule is enabled when an alert is triggered. 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, the alert information is sent to the specified Logstore when an alert is triggered. 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, the alert information is sent to the specified topic in Message Service (MNS) when an alert is triggered. 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.

    Function Compute

    If you turn on Function Compute, an alert notification is sent to Function Compute for format processing when an alert is triggered. In this case, you must configure the Region, Service, and Function parameters.

    For more information about how to create a service and a function, see Create a function in the Function Compute console.

    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)

    • Send alert notifications

    • Treated as normal

    Note

    You can click Advanced Settings to configure this parameter.

  5. Click Confirm.