Monitor an App Service app with web server logs using Azure CLI

This sample script creates a resource group, App Service plan, and app, and configures the app to enable web server logs. It then downloads the log files for review.

If you don't have an Azure subscription, create a free account before you begin.

Prerequisites

  • Use Azure Cloud Shell using the Bash environment.

    Launch Cloud Shell in a new window

  • If you prefer, install the Azure CLI to run CLI reference commands.

    • If you're using a local installation, sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For additional sign-in options, see Sign in with the Azure CLI.
    • When you're prompted, install Azure CLI extensions on first use. For more information about extensions, see Use extensions with the Azure CLI.
    • Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.
  • This tutorial requires version 2.0 or later of the Azure CLI. If using Azure Cloud Shell, the latest version is already installed.

Sample script

#/bin/bash

# Variables
appName="AppServiceMonitor$random"
location="WestUS"

# Create a Resource Group
az group create --name myResourceGroup --location $location

# Create an App Service Plan
az appservice plan create --name AppServiceMonitorPlan --resource-group myResourceGroup --location $location

# Create a Web App and save the URL
url=$(az webapp create --name $appName --plan AppServiceMonitorPlan --resource-group myResourceGroup --query defaultHostName | sed -e 's/^"//' -e 's/"$//')

# Enable all logging options for the Web App
az webapp log config --name $appName --resource-group myResourceGroup --application-logging true --detailed-error-messages true --failed-request-tracing true --web-server-logging filesystem

# Create a Web Server Log
curl -s -L $url/404

# Download the log files for review
az webapp log download --name $webappname --resource-group myResourceGroup

Clean up deployment

After the sample script has been run, the following command can be used to remove the resource group and all resources associated with it.

az group delete --name myResourceGroup

Script explanation

This script uses the following commands to create a resource group, App Service app, and all related resources. Each command in the table links to command specific documentation.

Command Notes
az group create Creates a resource group in which all resources are stored.
az appservice plan create Creates an App Service plan.
az webapp create Creates an App Service app.
az webapp log config Configures which logs an App Service app persists.
az webapp log download Downloads the logs of an App Service app to your local machine.

Next steps

For more information on the Azure CLI, see Azure CLI documentation.

Additional App Service CLI script samples can be found in the Azure App Service documentation.