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Capture a Windows VM as an Image on Azure

Abstract

During this module, you will learn how to Capture a windows VM as an Image on Azure.

Learning objectives

After completing the exercises in this module, you will be able to:

  • Prepare the VM for image capture
  • Capture the VM using PowerShell
  • Generalize a virtual machine

Prerequisite

Estimated time to complete this module:

30 min

How do I create a VM image from an existing Azure VM

Using Azure PowerShell create a generalized image of an existing Azure VM. You can then use the image to create another VM. This image includes the OS disk and the data disks that are attached to the virtual machine. The image doesn't include the virtual network resources, so you need to set up those resources when you create a VM using the image.

How to capture a Windows virtual machine in the Resource Manager deployment model

Prepare the VM for image capture

  • Sign in to your Windows virtual machine. In the Azure portal, navigate through Browse > Virtual machines > Your Windows virtual machine > Connect.

  • Open a Command Prompt window as an administrator.

  • Change the directory to %windir%\system32\sysprep, and then run sysprep.exe.

  • In the System Preparation Tool dialog box, do the following:

    • In System Cleanup Action, select Enter System Out-of-Box Experience (OOBE) and make sure that Generalize is checked.
    • In Shutdown Options, select Shutdown.

  • Click OK.

Capture the VM using PowerShell

Login-AzureRmAccount

Verify Machine exists

Get-AzureRmVM -ResourceGroupName MYGROUP2 -Name myvm1

Verify status of the machine where

## Code: PowerState/stopped
## DisplayStatus : VM Stopped

$vm = Get-AzureRmVM -ResourceGroupName MYGROUP2 -Name myvm1 -status
$vm.Statuses

Now you will need to deallocate the resources that are used by this virtual machine

Stop-AzureRmVM -ResourceGroupName MYGROUP2 -Name myvm1 -Verbose

Again Verify status of the machine where

## Code : PowerState/deallocated
## DisplayStatus : VM deallocated

$vm = Get-AzureRmVM -ResourceGroupName MYGROUP2 -Name myvm1 -status
$vm.Statuses

Set the status of the virtual machine to Generalized.

  • Note that you will need to do this because the generalization step above (sysprep) does not do it in a way that Azure can understand.
Set-AzureRmVm -ResourceGroupName MYGROUP2 -Name myvm1 -Generalized
  • Note: The generalized state as set above will not be shown on the portal. However, you can verify it by using the Get-AzureRmVM command.

Again Verify status of the machine showing

## Code : OSState/generalized
## DisplayStatus : VM generalized

$vm = Get-AzureRmVM -ResourceGroupName MYGROUP2 -Name myvm1 -status
$vm.Statuses

<# Output
Code          : OSState/generalized
Level         : Info
DisplayStatus : VM generalized
Message       :
Time          :
#>

Capture the virtual machine image to a destination storage container

Save-AzureRmVMImage -ResourceGroupName MYGROUP2 -Name myvm1 -DestinationContainerName myimage -VHDNamePrefix customimage -Path C:\Users\user1\Documents\temp\customimage.json -Verbose

Location of VHD of the image : https://mystorageaccountft.blob.core.windows.net/system/Microsoft.Compute/Images/image/customimage-osDisk.7e5505ce-57c5-4cbb-a881-258a60b5c2df.vhd

Verify Creation of Image

Get-AzureRmStorageAccount | Get-AzureStorageContainer| Get-AzureStorageBlob |select Name

<# output
Microsoft.Compute/Images/image/customimage-osDisk.7e5505ce-57c5-4cbb-a881-258a60b5c2df.vhd
Microsoft.Compute/Images/image/customimage-vmTemplate.7e5505ce-57c5-4cbb-a881-258a60b5c2df.json
myvm1.7e5505ce-57c5-4cbb-a881-258a60b5c2df.status
myvm1_os.vhd
#>

See the following resources to learn more