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Dreamwalker
Asked: 2015-11-21 03:18:01 +0800 CST

How do you set an availability set for an existing VM in azure?

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I am using the new Resource Manager type of virtual machine.

Now I need to add this into a load balancer (already configured) but I can't find how to assign this VM into the Availability Set so I can allocate it to the load balancer.

There seems to be no UI in the preview portal, so I am assuming this to be a PowerShell only at the moment but I can find no docs on assigning an existing VM.

FYI - All items associated with this are in the same region I ensured this to start with.

powershell

2 Answers

  1. Best Answer

    There is no setting for this in ARM yet, even in powershell

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  2. Well there is still no option in the GUI, but Samir Farhat has written a powershell script which can be used to change the AS of existing VM in ARM mode.

    AFAIK, this feature may be addressed by the end of this year. It's a big challenge for the MS team to allow such operation. Changing the availability Set requires a review of the VM mobility architecture on Azure. Fore example, adding a VM in an Availability Set already containing a VM means putting it to different default domain. Becasue VM mobilty is a matter on Azure (No Live Migration), it's not an easy operation. I have written a Powershell script which let you change the AS of an ARM VM by recreating it. Give it a try and enjoy : https://buildwindows.wordpress.com/2016/02/25/add-or-change-an-arm-virtual-machines-availability-set/

    The complete discussion on this topic can be found at this link

    Copying the excerpt here, Just in case if the page link becomes invalid

    How to use it ?

    1- Download the script and save it to local location

    2- Run it and provide the requested parameters

    or

    2- ./Set-ArmVmAvailabilitySet.ps1 –VmName ‘The VM Name’ –ResourceGroup ‘Resource Group’ –AvailabilitySetName ‘As Name’ –SubscriptionName ‘The Subscription name’

    To remove a VM from an AvailabilitySet:

    ./Set-ArmVmAvailabilitySet.ps1 –VmName ‘The VM Name’ –ResourceGroup ‘Resource Group’ –AvailabilitySetName 0 –SubscriptionName ‘The Subscription name’

    Download Link

    Version 1.01 : https://gallery.technet.microsoft.com/Set-Azure-Resource-Manager-f7509ec4

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