How to move existing VM to VMSS in azure ?

Question

Hello,
I have to move my VM to VMSS, I can also bear downtime. Is there any guide which I can follow ?

Answer 1

Hi

see below, its not supported to move an existing VM to a scale set:

https://learn.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-attach-detach-vm?tabs=portal#exceptions-to-attaching-a-vm-to-a-virtual-machine-scale-set

You must attach the VM at the time of VM creation. You can't attach an existing VM to a scale set.

However, you could generalize the VM, add it to an image gallery and use the image to create a scale set from the image:

https://learn.microsoft.com/en-us/azure/virtual-machine-scale-sets/tutorial-use-custom-image-powershell

Hope this helps,

Thanks

Michael Durkan

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