Microsoft recently updated Azure Powershell to 1.0 in the process introducing a large number of breaking changes to the CmdLet’s. Essentially they’ve removed Switch-AzureMode and instead of that the Azure Resource Manager cmdlets have all had an Rm introduced to them so for example:
New-AzureResourceGroupDeployment
becomes
New-AzureRmResourceGroupDeployment
For the most part the errors on upgrading a Powershell script are obvious and a rename will get you going however somewhat confusingly there are now pairs of cmdlet’s that do the same thing but only effect the different cmdlet sets.
An example of one that caught me out is Select-AzureSubscription. I’ve got numerous Azure subscriptions and scripts that deploy into different subscriptions depending on what I’m doing. Previously I used Select-AzureSubscription along with Switch-AzureMode and this worked. The problem is that Select-AzureSubscription still works – but it has no effect on the cmdlets that use the Rm prefix.
This led, confusingly, to a resource group being created in a different subscription to the one I intended and resources with the same name as in my intended resource group (resources which already existed) being created, or attempted to be created, in this new resource group. They failed as they already existed with the same names elsewhere.
The fix was to use Select-AzureRmSubscription.
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