Exercise - Enable and configure App Service application logging using the Azure portal


In this unit, you'll enable app logging for the new fashions Azure Web App.

You're going to deploy a sample ASP.NET Core Web app from GitHub; this app includes code to generate various trace output messages. You'll then use the Azure portal to enable app logging for this app.

Use Azure CLI to deploy a web app

In this step, to create an ASP.NET Web app using code from a GitHub repository, you're going to use Azure CLI commands. You will also create a new storage account, in the same region as the Web app, for log storage.

  1. To set some variables, replacing <your-local-Azure-region>, with the closest region to you from the following list, in Cloud Shell, run the following commands.

    The free sandbox allows you to create resources in a subset of the Azure global regions. Select a region from this list when you create resources:

    • westus2
    • southcentralus
    • centralus
    • eastus
    • westeurope
    • southeastasia
    • japaneast
    • brazilsouth
    • australiasoutheast
    • centralindia
    resourceGroup=<rgn>[sandbox resource group name]</rgn>
  2. To deploy the web app, in Cloud Shell, run the following commands.

    az appservice plan create --name $appPlan --resource-group $resourceGroup --location $appLocation --sku FREE
    az webapp create --name $appName --resource-group $resourceGroup --plan $appPlan --deployment-source-url $gitRepo
  3. Make a note of the random number suffix in your app name. This was generated to uniquely identify your app. The app may take several minutes to deploy.

  4. To create a storage account, in Cloud Shell, run the following command.

    az storage account create -n $storageAccount -g $resourceGroup -l $appLocation --sku Standard_LRS 
  5. Before continuing with the exercise, wait until the commands have been completed.

Enable logging using the Azure portal

In this step, you're going to use the Azure portal to enable app logging to the file system, and to Azure Blob storage. You'll start by checking that your Web app is running.

  1. Sign in to the Azure portal using the same account you activated the sandbox with.

  2. On the Azure portal Home page, under Navigate, select Subscriptions. The Subscriptions pane for your Microsoft Learn Sandbox appears.

  3. In the directories list, select Concierge Subscription. The Concierge Subscription pane appears.

  4. On the Azure portal menu, or from the Home page, select More services, and then select Resource groups. The Resource groups pane appears.

  5. Ensure that your sandbox resource group ([sandbox resource group name]) is listed.

  6. On the Azure portal menu, or from the Home page, select App Services. The App Services pane appears.

  7. Select contosofashions<your-number>. The contosofashions<your-number> pane appears.

  8. In the Essentials section, to open the home page for the Contoso Fashions website, copy and paste the URL string (https://contosofashions<your-number>.azurewebsites.net) in a new browser tab. The Contoso Fashions home page should appear.

    You'll now set up the app logging.

  9. Switch to the tab showing the Azure portal showing your App Service pane for contosofashions<your-number>.

  10. In the middle menu pane, scroll down to Monitoring, and then select App Service logs. The App Service logs pane appears.

  11. Under Application Logging (Filesystem), select On, and in the Level box dropdown list, select Error.

  12. Under Application Logging (Blob), select On, and in the Level box dropdown list, select Verbose.

  13. Select Storage Settings, and on the Storage Accounts pane, select sacontosofashions<your-number>, where <your-number> is the number suffix you noted when you created your app. The Containers pane appears.

    If it says Storage not configured, select that text, and follow the previous directions.

  14. In the top menu bar, select Container. The New container pane appears.

  15. In the Name box, enter asplogs, and then select Create.

  16. In the Containers pane, select asplogs, and then select Select.

  17. In the Retention Period (Days) box, enter 5.

  18. To close the logs pane, and update the log settings, in the top menu bar, select Save.