Set-VMSize

Azure: Changes the size of an Azure virtual machine

Script

param(
	[Parameter(Mandatory = $true)]
	[string]$ResourceGroupName,

	[Parameter(Mandatory = $true)]
	[string]$Name,

	[Parameter(Mandatory = $true)]
	[string]$Size
)

try {
	Import-Module Az.Compute -ErrorAction Stop

	$vm = Get-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -ErrorAction Stop
	$vm.HardwareProfile.VmSize = $Size

	Write-Output "Stopping virtual machine '$Name' to apply new size..."
	Stop-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -Force -ErrorAction Stop

	Write-Output "Updating virtual machine size to '$Size'..."
	Update-AzVM -VM $vm -ResourceGroupName $ResourceGroupName -ErrorAction Stop

	Write-Output "Starting virtual machine '$Name'..."
	Start-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -ErrorAction Stop

	$newSize = (Get-AzVM -ResourceGroupName $ResourceGroupName -Name $Name).HardwareProfile.VmSize
	Write-Output "Virtual machine size successfully updated to: $newSize"
} catch {
	Write-Error $_
	exit 1
}

Customize

ResourceGroupName string

The name of the resource group containing the virtual machine.

Name string

The name of the virtual machine to resize.

Size string

The new size for the virtual machine (e.g., Standard_DS2_v2).