Assigning Availability Set At The Time Of Creation Of VM

At the point of creation of a VM in a cloud, you’ll get an option to put that VM in a specific Availability Set. After the creation of VM you can’t change its availability set or to put it in a new one through GUI..

Change The Availability Set Using PowerShell

A VM can only be added to an availability set when it is created. In order to change the availability set, you need to delete and recreate the virtual machine.

Capture the following key details from the VM to be modified.

Name of the VM

undefined $vm = Get-AzureRmVM -ResourceGroupName -Name $vm.Name

VM Size

undefined $vm.HardwareProfile.VmSize

Network primary network interface and optional network interfaces if they exist on the VM

undefined $vm.NetworkProfile.NetworkInterfaces[0].Id

OS Disk Profile

undefined $vm.StorageProfile.OsDisk.OsType $vm.StorageProfile.OsDisk.Name $vm.StorageProfile.OsDisk.Vhd.Uri

Disk profiles for each data disk

undefined $vm.StorageProfile.DataDisks[].Lun $vm.StorageProfile.DataDisks[].Vhd.Uri

VM extensions installed

undefined $vm.Extensions

Delete the VM without deleting any of the disks or the network interfaces.

undefined Remove-AzureRmVM -ResourceGroupName -Name

Create the availability set if it does not already exist

undefined New-AzureRmAvailabilitySet -ResourceGroupName -Name -Location ""

Recreate the VM using the new availability set

undefined $vm2 = New-AzureRmVMConfig -VMName -VMSize -AvailabilitySetId Set-AzureRmVMOSDisk -CreateOption "Attach" -VM -VhdUri -Name [-Windows | -Linux] Add-AzureRmVMNetworkInterface -VM -Id New-AzureRmVM -ResourceGroupName -Location -VM

Updated on: 31/01/2023

Updated on: 01/07/2024

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