simpleAvSetVMsToPremium.sh

#! /bin/bash

rg="USTV-Web"
avSetName="myAvSet"
targetsize="Standard_DS2"

avSetDetail=$(az vm availability-set show -g $rg -n $avSetName)

vms=$(echo $avSetDetail | jq '.virtualMachines[]')
avVMIDs=$(echo $vms | jq -r '.id')

#Deallocate the VM before changing the size of the VM
echo "deallocating "$avVMIDs
az vm deallocate --ids $avVMIDs

#Change the VM size to a size that supports premium storage 
echo "resizing "$avVMIDs
az vm resize --ids $avVMIDs --size $targetsize

echo $vms | jq -c '.' | while read i; do
    id=$(echo $i | jq -r '.id')
    storageProfile=$(echo $i | jq '.storageProfile')

    #Update the sku of the OS disk
    osDisk=$(echo $storageProfile | jq -r '.osDisk.managedDisk.id')
    echo "updating osDisk "$osDisk
    az disk update --sku Premium_LRS --ids "$osDisk"

    echo "terraform state rm azurerm_virtual_machine.vm;"
    echo "terraform importazurerm_virtual_machine.vm $id;"
  done  

az vm start --ids $avVMIDs