Azure App Service

Author : MD TAREQ HASSAN | Updated : 2020/11/18

What is App service Web app?

Web Apps is a fully managed platform that enables you to build, deploy, and scale enterprise-grade Web Apps
A cloud computing based platform for hosting websites
A platform as a service which allows publishing Web apps running on multiple frameworks and written in different programming languages
Web Apps provides a platform to build an App in Azure without having to deploy, configure and maintain your own Azure VM’s

Web Apps vs API apps

Both uses same compute service (Azure App Service)
All features available for one is available to the other
No differences under the hood. Only different icons, name and an API Definition that is populated in case of API app

Why to use

Continuous deployment with Git, Team Foundation Server, GitHub, and DevOps
Built-in autoscale and load balancing
Supports WordPress, Umbraco, Joomla!, and Drupal
High availability with auto-patching
Supports Windows and Linux platforms

Prerequisites of creating WebApp

Create Resource Group:

Go to: https://portal.azure.com/#create/Microsoft.ResourceGroup (login to Azure portal first, then click the link)
Fillup details (i.e. name ‘demo-rg’, select subscription etc.)
Create

App service plan and Application Insights:

Creating WebApp using Azure portal

Go to: https://portal.azure.com/#create/Microsoft.WebSite
Fillup details > Create and review
Create

Creating WebApp using Azure portal Step 1

Creating WebApp using Azure portal Step 2

Creating WebApp using Azure portal Step 3

Creating WebApp using Azure portal Step 4

Creating WebApp using Azure portal Step 5

Creating Web App using PowerShell

New-AzWebApp -ResourceGroupName "demo-rg" -AppServicePlan "demo-asp" -Name "dem0webapp" -Location "Japan East"

Add Application Insights

Using Azure portal
- Go to App service WebApp
- Settings > Application Insigjhts > Trun on Application Insights
- Select existing resource > Select Application Insights that created before
- Apply

Using Azure PowerShell:

  $app = Get-AzWebApp -ResourceGroupName "AppMonitoredRG" -Name "AppMonitoredSite" -ErrorAction Stop
  $newAppSettings = @{} # case-insensitive hash map
  $app.SiteConfig.AppSettings | %{$newAppSettings[$_.Name] = $_.Value} # preserve non Application Insights application settings.
  $newAppSettings["APPINSIGHTS_INSTRUMENTATIONKEY"] = "012345678-abcd-ef01-2345-6789abcd"; # set the Application Insights instrumentation key
  $newAppSettings["APPLICATIONINSIGHTS_CONNECTION_STRING"] = "InstrumentationKey=012345678-abcd-ef01-2345-6789abcd"; # set the Application Insights connection string
  $newAppSettings["ApplicationInsightsAgent_EXTENSION_VERSION"] = "~2"; # enable the ApplicationInsightsAgent
  $app = Set-AzWebApp -AppSettings $newAppSettings -ResourceGroupName $app.ResourceGroup -Name $app.Name -ErrorAction Stop