VM Management

# powershell script for VM mass management. Requires a .csv file containing the list of VMs and a name for the snapshot/ If no snapshot name is given, "Snapshot_1" is used.

 #load powercli if needed
if (!(Get-Module -Name VMware.VimAutomation.Core) -and (Get-Module -ListAvailable -Name VMware.VimAutomation.Core)) {
    Write-Output "loading the VMware Core Module..."
    if (!(Import-Module -Name VMware.VimAutomation.Core -ErrorAction SilentlyContinue)) {
        # Error out if loading fails
        Write-Error "`nERROR: Cannot load the VMware Module. Is the PowerCLI installed?"
     }
    $Loaded = $True
    }
 #   elseif (!(Get-Module -Name VMware.VimAutomation.Core -ErrorAction SilentlyContinue) -and !(Get-Module -Name VMware.VimAutomation.Core) -and ($Loaded -ne $True)) {
 #       Write-Output "loading the VMware Core Snapin..."
 #    if (!(Add-PSSnapin -PassThru VMware.VimAutomation.Core -ErrorAction SilentlyContinue)) {
 #    # Error out if loading fails
 #    Write-Error "`nERROR: Cannot load the VMware Snapin or Module. Is the PowerCLI installed?"
 #    }
 #   }

# Define vmConfigSpec params
$vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec
$vmConfigSpec.Tools = New-Object VMware.Vim.ToolsConfigInfo
$vmConfigSpec.Tools.ToolsUpgradePolicy = "UpgradeAtPowerCycle"

# Get the command-line params
 $command = $args[0]
 $list = $args[1]
 $server = $args[2]

# define default params
if (!$list) { $list = "vm_mgmt.csv"}
if (!$server) { $server = "default.vCenter.domain.tld"}

# Start processing the command
  switch ($command) {
    default { $myname = $MyInvocation.MyCommand.Definition
    echo "`nERROR! Usage:"
    echo "$myname command [list] [server] "
    echo "`ncommand is one of the following: viewsnap, takesnap, delsnap, revertsnap, hwupd, vmtoolsupd, vmoff, vmon."
    echo " list is a .csv file containing 'VM_Name,Snapshot_name'. If no list provided, 'vm_mgmt.csv' will be used."
    echo " server is the name of the server connecting to. If no server is provided, 'default.vCenter.domain.tld' will be used.`n"
    }
 
  "viewsnap" {
    ### View Snapshot
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nView Snaphots:`n"
      get-vm -Name $_.VM_Name | get-snapshot
  } }

  "takesnap" {   
    ### Take Snapshot
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nTaking Snapshots`n"
      get-vm -Name $_.VM_Name | New-Snapshot -Name $_.Snapshot_1 -Quiesce -Memory
  } }

  "delsnap" {   
    ### Delete Snapshot
    Connect-VIServer -Server $server -Protocol https
    import-csv $list | ForEach-Object {
    $_.VM_Name
    $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
   echo "`nDelete Snapshots`n"
    get-snapshot -name $_.Snapshot_1 -vm $_.VM_Name | remove-snapshot -confirm:$false
  } }

  "revertsnap" {
    ### Revert To Snapshot
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
    echo "`nReverting Snapshots. Confirmation is required for each restore.`n"
      set-vm -VM $_.VM_Name -Snapshot $_.Snapshot_1 -whatif
    # set-vm -VM $_.VM_Name -Snapshot $_.Snapshot_1 -confirm:$false
  } }

  "hwupd" { 
    # VM Hardware upgrade
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nVM Hardware upgrade to vmx-13`n"
      $do = New-Object -TypeName VMware.Vim.VirtualMachineConfigSpec
      $do.ScheduledHardwareUpgradeInfo = New-Object -TypeName VMware.Vim.ScheduledHardwareUpgradeInfo
      $do.ScheduledHardwareUpgradeInfo.UpgradePolicy = “always”
      $do.ScheduledHardwareUpgradeInfo.VersionKey = “vmx-13”
      $vm.ExtensionData.ReconfigVM_Task($do)
  } }

  "vmtoolsupd" {
    # VM Tools update
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nUpdating VM Tools`n"
      get-vm -Name $_.VM_Name | %{$_.Extensiondata.ReconfigVM($vmConfigSpec)}
  } }

  "vmoff" {
    # VM power off
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nTurning VMs OFF`n"
      $vm = Get-VM -Name $_.VM_Name | Shutdown-VMGuest -Confirm:$false
  } }

  "vmon" {
    # VM power on
      Connect-VIServer -Server $server -Protocol https
      import-csv $list | ForEach-Object {
      $_.VM_Name
      $_.Snapshot_name
      if (!$_.Snapshot_name) { $_.Snapshot_name = "Snaphot_1"}
    echo "`nTurning VMs ON`n"
      $vm = Get-VM -Name $_.VM_Name | Start-VM -Confirm:$false
  } }

}



-----------------------------------------------
type vm_mgmt.csv

VM_NAME,Snapshot_name
some-vm-name,Snapshot_342
another-vm-name,Snapshot_temp4