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Update-AzVmSize.ps1
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Update-AzVmSize.ps1
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param
(
[Parameter(mandatory = $true, position = 0)]
[string]$vmResourceId,
[Parameter(mandatory = $true, position = 1)]
[string]$newVmSize,
[Parameter(mandatory = $false, position = 2)]
[switch]$stopVm
)
function Parse-ResourceId
{
[CmdletBinding()]
param
(
[Parameter(valueFromPipeline = $true, mandatory = $true)]
[ValidatePattern("(/\w+/)([a-fA-F\d]{8}-([a-fA-F\d]{4}-){3}[a-fA-F\d]{12})(/\w+/)([\d\w-_]+)(/\w+/)([\w+.]+)([/\w+/)([\d\w-_]+)")]
[string]$resourceId
)
try
{
$resourceId = $resourceId.ToLower();
$resourceHash = @{};
# subscriptionId
$subscriptionId = [regex]::Match($resourceId, "[a-fA-F\d]{8}-([a-fA-F\d]{4}-){3}[a-fA-F\d]{12}").value;
$resourceHash.Add("subscriptionId", $subscriptionId);
# resource group
$resourceGroup = [regex]::Match($resourceId, "resourcegroups/([\d\w-_]+)").value.replace("resourcegroups/", "");
$resourceHash.Add("resourceGroup", $resourceGroup);
# parent resource
$resourceValue = [regex]::Match($resourceid, "providers/([\w+.]+)(/\w+/)([\w-_]+)").value;
$resourceValue = [regex]::Replace($resourceValue, "providers/([\w+.]+)(/\w+/)", "");
$resourceProvider = [regex]::Match($resourceid, "providers/([\w+.]+)(/\w+/)([\w-_]+)").value;
$resourceProvider = [regex]::Replace($resourceProvider, "providers/([\w+.]+)/", "");
$resourceProvider = $resourceProvider.Substring(0, $resourceProvider.IndexOf("/"));
$resourceHash.Add($resourceProvider, $resourceValue);
# recurse child resources
$childResources = $resourceid.Substring($resourceid.IndexOf($resourceValue)).Replace("$resourceValue/", "");
if ([regex]::Match($childResources, "/").success -eq $true)
{
do
{
$match = [regex]::Match($childResources, "/");
$childResourceProvider = [regex]::Match($childResources, "([\w+-]+)/").value;
$childResourceProviderValue = $childResources.Replace($childResourceProvider, "");
$childresources = $childResourceProviderValue.Substring($childResourceProviderValue.IndexOf("/") + 1);
if ([regex]::Match($childResourceProviderValue, "/").success -eq $true)
{
$childResourceProviderValue = $childResourceProviderValue.Substring(0, $childResourceProviderValue.IndexOf("/"));
}
$resourceHash.Add($childResourceProvider.replace("/", ""), $childResourceProviderValue);
if ([regex]::Match($childResources, "/").success -eq $false)
{
break;
}
}
while ($match.success -eq $true)
}
}
catch [exception]
{
Write-Error -Message "Error parsing the resourceId! $($_.exception)";
}
return $resourceHash;
}
function Update-AzVmSize
{
[CmdletBinding()]
param
(
[Parameter(mandatory = $true, position = 0)]
[string]$vmResourceId,
[Parameter(mandatory = $true, position = 1)]
[string]$newVmSize,
[Parameter(mandatory = $false, position = 2)]
[switch]$stopVm
)
$parsedVm = Parse-ResourceId -resourceId $vmResourceId;
$vm = Get-AzVM -ResourceGroupName $parsedVm.resourceGroup -Name $parsedVm.virtualmachines;
if ($vm.HardwareProfile.VmSize -ne $newVmSize)
{
if ($stopVm)
{
Stop-AzVM -Name $vm.Name -ResourceGroupName $vm.ResourceGroupName -Force;
}
$sizeCheck = Get-AzVMSize -ResourceGroupName $vm.ResourceGroupName -VMName $vm.Name | ? { $_.Name -eq $newVmSize };
if ($sizeCheck)
{
$vm.HardwareProfile.VmSize = $newVmSize;
Update-AzVM -VM $vm -ResourceGroupName $vm.ResourceGroupName;
}
else
{
Write-Error -Message "The $newVmSize sku is not available for $($vm.Name) in $($vm.Location). `
Re-running the command with the -stopVm switch may return additional skus available.";
}
if ($stopVm)
{
Start-AzVM -Name $vm.Name -ResourceGroupName $vm.ResourceGroupName;
}
}
else
{
Write-Warning -Message "$($vm.name) will not be re-sized. The vm's sku is already set as $newVmSize";
}
}
Update-AzVmSize -vmResourceId $vmResourceId -newVmSize $newVmSize;