Posts tagged Powershell

This a repost of an older posing I’ve done before, on the Wortell blog, which I would like to share with you in case you didn’t already read it

SP1 for Windows Server 2008 R2 has been release for RTM. On February 16 it will be available to current customers of the Windows Volume Licensing program, as well as subscribers to Microsoft Developer Network (MSDN) and TechNet. On February 22 it will be available to all customers through Windows Update and will also come preinstalled on new servers ordered.

With the release of ths SP1 for Windows Server 2008 R2 you might want to check your Integration Components on all you VM’s and Hyper-V nodes.

Inspired by this blog “A script to check the Integration Services Version on Hyper-V Host and Guests” and this blog “Hyper-V Integration Components version list table” the script below was created. The script mentioned in the first blog can only be executed on the host itself or via a PSSession on a remote host but is always one host at the time.

When using this script it is possible to use two different kinds of arrays. The first is a set of predefined hosts containing Hyper-V, the second is an OU in which all the Hyper-V hosts are located. To use the first type of array you need to adjust the script around line 29. When using the array based on the OU you don’t need to change the script.

The script has been tested on Windows Server 2008 R2 and Windows 7. It uses WMI so please make sure your firewall is setup correctly.

# Specifies hosts to query.

# When using a small array.
# $hosts = @(”, ”)

# When using a specific OU.
import-module activedirectory
$hosts = Get-ADComputer –filter * -SearchBase “OU=Virtual Hosts,DC=CONSTOSO,DC=local”

# Tabel headers
Write-host ‘HostName’ ‘HosticVersion’ ‘GuestName’ ‘GuesticVersion’

# Defines import filter.
filter Import-CimXml
{
$cimXml = [XML]$_
$cimTree = New-Object -TypeName System.Object
foreach ($cimProperty in $cimXml.SelectNodes(“/INSTANCE/PROPERTY”))
{$cimTree | Add-Member -MemberType NoteProperty -Name $cimProperty.NAME -Value $cimProperty.VALUE}
$cimTree
}

# Retrieves all VMs except host itself.
foreach($hostName in $hosts)
{

# When using an small array please disable $hostName = $hostName.name
$hostName = $hostName.name

$hostSession = new-pssession -computername $hostname
$icVersionParent = invoke-command -session $hostSession -scriptblock {Get-ChildItem “HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization\GuestInstaller” | ForEach-Object {Get-ItemProperty $_.pspath} | select-object “Microsoft-Hyper-V-Guest-Installer-Win60-Package”}

$guests = Get-WmiObject -Namespace root\virtualization -ComputerName $hostName `
-Query “SELECT * FROM Msvm_ComputerSystem WHERE EnabledState=2 AND NOT Caption LIKE ‘Hosting Computer System’”

Remove-pssession -computername $hostname

# Processes all guests.
foreach($guestName in $guests)
{

Try {

$guestKVP = Get-WmiObject -Namespace root\virtualization -ComputerName $hostName `
-Query “ASSOCIATORS OF {$guestName} WHERE AssocClass=Msvm_SystemDevice ResultClass=Msvm_KvpExchangeComponent” –ErrorAction Stop

$icVersionGuest = $guestKVP.GuestIntrinsicExchangeItems | Import-CimXml | Where-Object{$_.Name -eq ‘IntegrationServicesVersion’}

$ichost = $icVersionParent.’Microsoft-Hyper-V-Guest-Installer-Win60-Package’
$icguest = $icVersionGuest.Data

If ($ichost -eq $icguest)

{Write-host $hostName,$ichost,$guestName.ElementName,$icguest -foregroundcolor green}

Else
{Write-host $hostName,$icVersionParent.’Microsoft-Hyper-V-Guest-Installer-Win60-Package’,$guestName.ElementName,$icVersionGuest.Data -foregroundcolor red}

}

Catch {
Write-host $hostName,$ichost ‘Host contains no running guests’ -foregroundcolor red
}
}
}

So with this script it is possible to define an array of servers by hand or define a specific OU where all the Hyper-V hosts are located in your Active Directory.