Update virtual-machine-scale-sets-automatic-upgrade.md

Updated PS/CLI commands for enabling auto upgrade during provisioning and added a rolling upgrade timeout help blurb.

Author: maulikshah23

articles/virtual-machine-scale-sets/virtual-machine-scale-sets-automatic-upgrade.md

@@ -201,14 +201,26 @@ PUT or PATCH on `/subscriptions/subscription_id/resourceGroups/myResourceGroup/p
 ```
 
 ### Azure PowerShell
-Use the [Update-AzVmss](/powershell/module/az.compute/update-azvmss) cmdlet to configure automatic OS image upgrades for your scale set. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
+Use the [New-AzVmss](/powershell/module/az.compute//new-azvmss) cmdlet to configure automatic OS image upgrades for your scale set during provisioning. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
+
+```azurepowershell-interactive
+New-AzVmss -ResourceGroupName "myResourceGroup" -VMScaleSetName "myScaleSet" -AutomaticOSUpgrade $true
+```
+
+Use the [Update-AzVmss](/powershell/module/az.compute/update-azvmss) cmdlet to configure automatic OS image upgrades for your existing scale set. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
 
 ```azurepowershell-interactive
 Update-AzVmss -ResourceGroupName "myResourceGroup" -VMScaleSetName "myScaleSet" -AutomaticOSUpgrade $true
 ```
 
 ### Azure CLI 2.0
-Use [az vmss update](/cli/azure/vmss#az-vmss-update) to configure automatic OS image upgrades for your scale set. Use Azure CLI 2.0.47 or above. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
+Use [az vmss create](/cli/azure/vmss?view=azure-cli-latest#az-vmss-create) to configure automatic OS image upgrades for your scale set during provisioning. Use Azure CLI 2.0.47 or above. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
+
+```azurecli-interactive
+az vmss create --name myScaleSet --resource-group myResourceGroup --set UpgradePolicy.AutomaticOSUpgradePolicy.EnableAutomaticOSUpgrade=true
+```
+
+Use [az vmss update](/cli/azure/vmss#az-vmss-update) to configure automatic OS image upgrades for your existing scale set. Use Azure CLI 2.0.47 or above. The following example configures automatic upgrades for the scale set named *myScaleSet* in the resource group named *myResourceGroup*:
 
 ```azurecli-interactive
 az vmss update --name myScaleSet --resource-group myResourceGroup --set UpgradePolicy.AutomaticOSUpgradePolicy.EnableAutomaticOSUpgrade=true
@@ -456,6 +468,10 @@ The platform can return errors on VMs while performing Automatic Image Upgrade w
 - Error is triggered when an unhandled, unformatted or unexpected occurs during execution.
 - The detailed error message displays the cause of the error.
 
+**RollingUpgradeTimeoutError**
+- Error is triggered when the rolling upgrade process has timed out.
+- The detailed error message displays the length of time the system timed out after attempting to update.
+
 ## Next steps
 > [!div class="nextstepaction"]
 > [Learn about the Application Health Extension](../virtual-machine-scale-sets/virtual-machine-scale-sets-health-extension.md)