This script has pretty much already been covered in my previous post about Changing or Replacing an Operations Manager Gateway Server .

This time I’ve basically put parameter support in it to make it easier to use.

Here’s the script anyway.

Param($OldGW,$NewGW)

$OldMS= Get-ManagementServer | where {$_.Name -eq $OldGW}
$NewMS = Get-ManagementServer | where {$_.Name -eq $NewGW}
$agents = Get-Agent | where {$_.PrimaryManagementServerName -eq $OldGW}
$agents = $agents
"Moving " + $agents.count + " agents from " + $OldMS.Name + " to " + $NewMS.Name
Start-Sleep -m 200
Set-ManagementServer -AgentManagedComputer: $agents -PrimaryManagementServer: $NewMS -FailoverServer: $OldMS

To use it, create a textfile called ChangeGW.ps1 and paste the code into it. Save the file somewhere neat (maybe C:Scripts) for easy access. If you don’t feel like copy/pasting, you can download the script here .

To use it, open the Operations Manager Command Shell and type:
C:\ScriptsChangeGW.ps1 <old.gatewayserver.dns.name> <new.gatewayserver.dns.name>

For example:

C:\ScriptsChangeGW.ps1 gwserver01.domainname.local gwserver02.domainname.local