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Performance Monitoring with Azure Monitor logs

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This article covers the steps to add the Log Analytics agent as a virtual machine scale set extension to your cluster, and connect it to your existing Azure Log Analytics workspace. This enables collecting diagnostics data about containers, applications, and performance monitoring. By adding it as an extension to the virtual machine scale set resource, Azure Resource Manager ensures that it gets installed on every node, even when scaling the cluster.

Note

This article assumes that you have an Azure Log Analytics workspace already set up. If you do not, head over to Set up Azure Monitor logs.

Add the agent extension via Azure CLI

The best way to add the Log Analytics agent to your cluster is via the virtual machine scale set APIs available with the Azure CLI. If you don't have Azure CLI set up yet, head over to Azure portal and open up a Cloud Shell instance, or Install the Azure CLI.

  1. Once your Cloud Shell is requested, make sure you work in the same subscription as your resource. Check this with az account show and make sure the "name" value matches that of your cluster's subscription.

  2. In the Portal, navigate to the resource group where your Log Analytics workspace is located. Select the log analytics resource (the type of the resource will be Log Analytics workspace). Once you are at the resource overview page, select Advanced Settings under the Settings section on the left menu.

    Log analytics properties page

  3. Select Windows Servers if you're standing up a Windows cluster, and Linux Servers if you're creating a Linux cluster. This page shows your workspace ID and workspace key (listed as Primary Key in the portal). You need both for the next step.

  4. Run the command to install the Log Analytics agent onto your cluster, using the vmss extension set API:

    For a Windows cluster:

    az vmss extension set --name MicrosoftMonitoringAgent --publisher Microsoft.EnterpriseCloud.Monitoring --resource-group <nameOfResourceGroup> --vmss-name <nameOfNodeType> --settings "{'workspaceId':'<Log AnalyticsworkspaceId>'}" --protected-settings "{'workspaceKey':'<Log AnalyticsworkspaceKey>'}"

    For a Linux cluster:

    az vmss extension set --name OmsAgentForLinux --publisher Microsoft.EnterpriseCloud.Monitoring --resource-group <nameOfResourceGroup> --vmss-name <nameOfNodeType> --settings "{'workspaceId':'<Log AnalyticsworkspaceId>'}" --protected-settings "{'workspaceKey':'<Log AnalyticsworkspaceKey>'}"

    Here's an example of the Log Analytics agent being added to a Windows cluster.

    Log Analytics agent cli command

  5. This should take less than 15 min to successfully add the agent to your nodes. You can verify that the agents have been added by using the az vmss extension list API:

    az vmss extension list --resource-group <nameOfResourceGroup> --vmss-name <nameOfNodeType>

Add the agent via the Resource Manager template

Sample Resource Manager templates that deploy an Azure Log Analytics workspace and add an agent to each of your nodes is available for Windows or Linux.

You can download and modify this template to deploy a cluster that best suits your needs.

View Performance Counters

Now that you have added the Log Analytics agent, head on over to the Log Analytics portal to choose which performance counters you'd like to collect.

  1. In the Azure portal, go to the resource group in which you created the Service Fabric Analytics solution. Select ServiceFabric<nameOfLog AnalyticsWorkspace>.

  2. Select Log Analytics.

  3. Select Advanced Settings.

  4. Select Data, then choose Windows or Linux Performance Counters. There is a list of default counters you can choose to enable and you can set the interval for collection too. You can also add additional performance counters to collect. The proper format is referenced in this article.

  5. Select Save, then choose OK.

  6. Close the Advanced Settings blade.

  7. Under the General heading, select Workspace summary.

  8. You'll see tiles in the form of a graph for each of the solutions enabled, including one for Service Fabric. Select the Service Fabric graph to continue to the Service Fabric Analytics solution.

  9. You'll see a few tiles with graphs on operational channel and reliable services events. The graphical representation of the data flowing in for the counters you have selected appear under Node Metrics.

  10. Select on a Container Metric graph to see additional details. You can also query on performance counter data similarly to cluster events and filter on the nodes, perf counter name, and values using the Kusto query language.

Log Analytics perf counter query

Next steps