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Enable recommended alert rules for Azure Stack HCI

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Applies to: Azure Stack HCI, version 23H2

This article describes how to enable recommended alert rules for Azure Stack HCI.

A metric alert rule monitors a resource by evaluating conditions on the resource metrics at regular intervals. If the conditions are met, an alert is fired. Recommended alerts are predefined metric-based alerts for your Azure Stack HCI cluster resource. These alerts provide you with initial monitoring for a common set of metrics including CPU percentage and available memory.

For information about how to set up log alerts and metric alerts, see Set up log alerts for Azure Stack HCI and Set up metric alerts for Azure Stack HCI.

Prerequisites

Before you begin, make sure that the following prerequisites are completed:

  • You have access to an Azure Stack HCI cluster that is deployed and registered.

  • The AzureEdgeTelemetryAndDiagnostics extension must be installed to collect telemetry and diagnostics information from your Azure Stack HCI system. For more information about the extension, see Azure Stack HCI telemetry and diagnostics extension overview.

If you don't have alert rules defined for your cluster resource, you can enable recommended out-of-the-box alert rules in the Azure portal. The system compiles a list of recommended alert rules using Metrics data and provides threshold recommendations based on:

  • The resource provider’s knowledge of important signals and thresholds for monitoring the resource.
  • Data that tells us what customers commonly alert on for this resource.

For a list of predefined recommended alerts available for Azure Stack HCI, see Recommended alert rules for Azure Stack HCI.

Follow these steps to enable recommended alert rules in the Azure portal:

  1. Go to your Azure Stack HCI cluster resource page and select your cluster.

  2. On the left pane, select Alerts from the Monitoring section, and then select View + set up to enable the recommended alerts. You can also select Set up recommendations.

    Screenshot showing the option to create view or set up a recommended alert rule.

  3. In the Set up recommended alert rules pane, review the list of recommended alert rules for your cluster. In the Select alert rules section, all recommended alerts are populated with the default values for the rule condition, such as the percentage of CPU usage that you want to trigger an alert.

    Screenshot of the Set up recommended alert rules pane with a list of recommended alert rules for your cluster.

  4. Expand each of the alert rules to see its details. By default, the severity for each is Informational. You can change it to another severity, such as Error. You can also change the recommended threshold if required.

  5. In the Notify me by section, ensure that Email is enabled and provide an email address to be notified when any of the alerts fire.

  6. Select Use an existing action group, and enter the details of the existing action group if you want to use an action group that already exists.

  7. Turn on the toggle to create the alert rules, and select Save.

    Screenshot of an expanded recommended alert rule.

When the alert rule creation is complete, you'll see the alerts page for the Azure Stack HCI cluster.

Follow these steps to view recommended alert rules:

  1. Go to your Azure Stack HCI cluster resource page and select your cluster. From the Monitoring section on the left menu, select Alerts.

  2. On the Alerts page, select Alert rules to view the rules you created.

    Screenshot of the alerts page for your cluster.

  3. On the Alert rules page, select the alert rule that you want to view or edit.

    Screenshot of the Alert rules page showing the alerts you have created.

  4. Review the details of the selected alert rule. You can also select Edit to modify the default values of the selected alert rule, such as the default threshold value.

    Screenshot of the selected alert rule.

  5. After making the necessary changes, select Review + save.

    Screenshot of the Edit alert rule page.

Here's a list of predefined recommended alert rules available for Azure Stack HCI:

Alert name Performance counters used Unit Suggested threshold value
Percentage CPU Hyper-V Hypervisor Logical Processor\\% Total Run Time Percentage Greater than 80
Available Memory Bytes Memory\\Available Bytes GB Less than 1
Volume Latency Read Cluster CSVFS\\Avg. sec/Read Milliseconds Greater than 500
Volume Latency Write Cluster CSVFS\\Avg. sec/Write Milliseconds Greater than 500
Network In Per Second Network Adapter\\Bytes Received/sec GigaBytesPerSecond Greater than 500
Network Out Per Second Network Adapter\\Bytes Sent/sec GigaBytesPerSecond Greater than 200

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