Showing posts with label Resize. Show all posts
Showing posts with label Resize. Show all posts

Thursday, December 2, 2021

Resize Azure VMs using Az powershell.

Script to resize Azure VM's from any subscription. If a VM is stopped it will resize it. If it is running it will stop the VM and resize it.


#$NewSize = "Standard_D8s_v3"

$NewSize = "Standard_E4s_v3" 

#$NewSize = "Standard_DS1_v2"

Function Out($message) {
$message = $(Get-Date -Format "MM/dd/yyyyTHH:mm:ss") + ":" + $message
Write-Output $message}

Out "Vm resize script starting...."

function Connect($tenantid)
{
$username = "username@contoso.com"
$password = ConvertTo-SecureString -AsPlainText -Force "password" 
$pscredential = New-Object -TypeName System.Management.Automation.PSCredential($username$password)
Connect-AzAccount -Credential $pscredential -Tenant $tenantId -EnvironmentName AzureUSGovernment
}

Function Resize-VM($VM)
{
 
  Out "Resizing $($vm.name) in $($vm.ResourceGroupName) from $($VM.HardwareProfile.VmSize) to $NewSize"          ## Change here
   $VM.HardwareProfile.VmSize = $NewSize
  Update-AzVM -ResourceGroupName $vm.ResourceGroupName -VM $VM 
}


Function CheckVM($VM)
{            
   if((Get-AzVM -Name $VM.Name -Status).PowerState -eq "VM running")
     {
       Out "$($VM.Name) is resized and Started"
     }
     else {
         Out "$($VM.Name) is resized and not started"
      }
     
}

Connect "put your tenant id here"


$VMList = @("VM1","VM2" ## comma separated list of VM's
)
$Allsubs = Get-AzSubscription 

foreach($sub in $Allsubs)

{
   Select-AzSubscription -SubscriptionId $sub.SubscriptionId | Out-Null
  $VMS = Get-AzVM -Status 
 
foreach($vm in $VMS)
{
 
 foreach($v in $VMList)
   {
     if($v -eq $Vm.name)
      {
        
      if($vm.PowerState -notmatch "VM running"## If the VM is switched off.We resize but dont start it.
        {
          #Resize the vm
          Out "VM $($VM.Name) is already powered off.Resizing...."
          Resize-VM $VM
          
        }

     Else # If the VM is turned on. Turn it off, resize and start it.
        {
          Out "VM is powered on. So Stopping $($VM.Name)"
          Stop-AzVM -Name $vm.Name -ResourceGroupName $vm.ResourceGroupName -Force
          Start-Sleep -Seconds 120
          #Get VM Status
          if((Get-AzVM -Name $VM.Name -Status).PowerState -eq "VM deallocated")
             {
               Out "$($VM.Name) is now off. Resizing...."
               Resize-VM $VM
               Start-AzVM -Name $VM.Name -ResourceGroupName $VM.ResourceGroupName
               Start-Sleep -Seconds 300
               CheckVM $VM

         }
                 
      }
   }
}

}
}