Reset-AzureRMVM - Use with Azure Automation runbook to schedule VM startup and shutdown.

Reset-AzureRmVM.ps1

Workflow Reset-AzureRmVM
{ 
    Param 
    (    
        [Parameter(Mandatory=$true)][ValidateNotNullOrEmpty()] 
        [String] 
        $AzureSubscriptionId='', 
        [Parameter(Mandatory=$true)][ValidateNotNullOrEmpty()] 
        [String] 
        $AzureVMList='', 
        [Parameter(Mandatory=$true)][ValidateSet("Start","Stop")] 
        [String] 
        $Action 
    ) 
        $connectionName = "AzureRunAsConnection"
  try
  {
    # Get the connection "AzureRunAsConnection "
    $servicePrincipalConnection=Get-AutomationConnection -Name $connectionName         

    "Logging in to Azure..."
    Connect-AzureRmAccount `
        -ServicePrincipal `
        -TenantId $servicePrincipalConnection.TenantId `
        -ApplicationId $servicePrincipalConnection.ApplicationId `
        -CertificateThumbprint $servicePrincipalConnection.CertificateThumbprint 
  }
  catch {
    if (!$servicePrincipalConnection)
    {
        $ErrorMessage = "Connection $connectionName not found."
        throw $ErrorMessage
    } 
    else
    {
        Write-Error -Message $_.Exception
        throw $_.Exception
    }
  }
    if($AzureVMList -ne "All") 
    { 
        $AzureVMs = $AzureVMList.Split(",") 
        [System.Collections.ArrayList]$AzureVMsToHandle = $AzureVMs 
    } 
    else 
    { 
        $AzureVMs = (Get-AzureRmVM).Name 
        [System.Collections.ArrayList]$AzureVMsToHandle = $AzureVMs 
    } 
 
    foreach($AzureVM in $AzureVMsToHandle) 
    { 
        if(!(Get-AzureRmVM | Where-Object {$_.Name -eq $AzureVM})) 
        { 
            throw " AzureVM : [$AzureVM] - Does not exist! - Check your inputs " 
        } 
    } 
 
    if($Action -eq "Stop") 
    { 
        Write-Output "Stopping VMs"; 
        foreach -parallel ($AzureVM in $AzureVMsToHandle) 
        { 
            Get-AzureRmVM | Where-Object {$_.Name -eq $AzureVM} | Stop-AzureRmVM -Force 
        } 
    } 
    else 
    { 
        Write-Output "Starting VMs"; 
        foreach -parallel ($AzureVM in $AzureVMsToHandle) 
        { 
            Get-AzureRmVM | Where-Object {$_.Name -eq $AzureVM} | Start-AzureRmVM 
        } 
    } 
}