Starting virtual machines for WSUS
My test environment usually has a dozen or so machines at any one time. Some of these are short lived and used for a particular piece of testing – others are kept for years. I decided that I wanted to keep up to date on the patching of these virtual machines so installed WSUS on a Windows 2012 box.
One issue is that if a VM isn’t started for 10 days WSUS starts complaining that it hasn’t been contacted and if you run the WSUS clean up wizard the non-reporting servers may be removed. Checking the WSUS console for which machines haven’t sync’d recently is a chore.
In Windows 2012 both WSUS and Hyper-V come with a PowerShell module. This means I can do this:
$date = (Get-Date).AddDays(-10)
Get-WsusComputer -ToLastSyncTime $date |
sort LastSyncTime |
select -First 4 |
$computer = ($_.FullDomainName -split "\.")
Start-VM -Name $computer -ComputerName Server02 -Passthru
I’m using the WSUS server as my admin box but if you were accessing a remote WSUS machine change the code to
Get-WsusServer -Name w12sus -PortNumber 8530 | Get-WsusComputer –ToLastSyncTime $date |
I sorted the computers WSUS knows about by date – picked the last 4 to sync so I didn’t overwhelm the Hyper-V host and started them up. Only trick is to get the computer name out of the FullDomainName property.