Working with VM Extension from Azure Portal

Built Agent or Extension

1. Login to Azure portal and go to Virtual Machine dashboard
2. Now select your VM and go to Extension + application tab
   
3. Now here you will find predefined agents, you can choose from this list which agent you want to install. For this demo we will install Microsoft anti-malware agent, once you select the Microsoft malware agent click on Next
   
   
4. Now you can customize the installation details like which path to install  as well as the frequency of this Anti-virus Agent run or scan. Once you have configured the details of the agent you can click on Review + Create
   

Custom Script Extension

1. Launch Azure Cloud Shell
2. Create virtual machine

   $cred = Get-Credential

   New-AzVm `
   -ResourceGroupName "myResourceGroupAutomate" `
   -Name "myVM" `
   -Location "East US" `
   -VirtualNetworkName "myVnet" `
   -SubnetName "mySubnet" `
   -SecurityGroupName "myNetworkSecurityGroup" `
   -PublicIpAddressName "myPublicIpAddress" `
   -OpenPorts 80 `
   -Credential $cred

3. Automate IIS install

   Set-AzVMExtension -ResourceGroupName "myResourceGroupAutomate" `
   -ExtensionName "IIS" `
   -VMName "myVM" `
   -Location "EastUS" `
   -Publisher Microsoft.Compute `
   -ExtensionType CustomScriptExtension `
   -TypeHandlerVersion 1.8 `
   -SettingString '{"commandToExecute":"powershell Add-WindowsFeature Web-Server; powershell Add-Content -Path \"C:\\inetpub\\wwwroot\\Default.htm\" -Value $($env:computername)"}'

4. Test web site

   Get-AzPublicIPAddress `
   -ResourceGroupName "myResourceGroupAutomate" `
   -Name "myPublicIPAddress" | select IpAddress

5. You can then enter the public IP address in to a web browser