Powershell Script to configure Azure Application Gateway

 # Variables

$resourceGroupName = "myResourceGroup"

$appGwName = "myAppGw"

$vnetName = "myVnet"

$subnetName = "mySubnet"

$frontendIpName = "myFrontendIp"

$frontendPortName = "myFrontendPort"

$backendPoolName = "myBackendPool"

$httpSettingsName = "myHttpSettings"

$httpListenerName = "myHttpListener"

$certName = "myCert"

# Connect to Azure

Connect-AzAccount

# Get the Application Gateway

$appGw = Get-AzApplicationGateway -ResourceGroupName $resourceGroupName -Name $appGwName

# Get the Virtual Network and Subnet

$vnet = Get-AzVirtualNetwork -ResourceGroupName $resourceGroupName -Name $vnetName

$subnet = Get-AzVirtualNetworkSubnetConfig -Name $subnetName -VirtualNetwork $vnet

# Configure the Frontend IP Configuration

$frontendIp = New-AzApplicationGatewayFrontendIPConfig -Name $frontendIpName -PrivateIPAddressVersion IPv4 -Subnet $subnet

$appGw | Add-AzApplicationGatewayFrontendIPConfig -FrontendIPConfiguration $frontendIp

# Configure the Frontend Port

$frontendPort = New-AzApplicationGatewayFrontendPort -Name $frontendPortName -Port 80

$appGw | Add-AzApplicationGatewayFrontendPort -FrontendPort $frontendPort

# Configure the Backend Pool

$backendPool = New-AzApplicationGatewayBackendAddressPool -Name $backendPoolName

$appGw | Add-AzApplicationGatewayBackendAddressPool -BackendAddressPool $backendPool

# Configure the HTTP Settings

$httpSettings = New-AzApplicationGatewayBackendHttpSettings -Name $httpSettingsName -Port 80 -Protocol Http -CookieBasedAffinity Enabled

$appGw | Add-AzApplicationGatewayBackendHttpSettings -BackendHttpSettings $httpSettings

# Configure the HTTP Listener

$httpListener = New-AzApplicationGatewayHttpListener -Name $httpListenerName -FrontendIPConfiguration $frontendIp -FrontendPort $frontendPort -Protocol Http

$appGw | Add-AzApplicationGatewayHttpListener -HttpListener $httpListener

# Configure the SSL Certificate

$cert = Get-AzApplicationGatewaySslCertificate -Name $certName -ApplicationGateway $appGw

$appGw | Set-AzApplicationGatewaySslCertificate -Name $certName -Certificate $cert.Certificate -Password $cert.Password

# Update the Application Gateway

Set-AzApplicationGateway -ApplicationGateway $appGw