Cannot set SCOM maintenance mode remotely (Part2)

Question

Following up from this question (Cannot set SCOM maintenance mode remotely)

We're trying to put servers in maintenance mode remotely. I'm using SCOM functions created by Tom Schumacher (https://gallery.technet.microsoft.com/scriptcenter/Put-server-in-Maintenance-0a23e1fe)

I'm using PSSession to try and put the server in maintenance mode from a server other than the SCOM server:

. C:\Scripts\Start-serverScommaintenance.ps1
$s = New-PSSession -ComputerName scomserver
Invoke-Command -Session $s -Scriptblock {Import-Module OperationsManager}
Invoke-Command -Session $s -Scriptblock ${function:Start-
serverScommaintenance} 
Invoke-Command -Session $s -Scriptblock {Start-serverScommaintenance -
servername testserver -message "test" -maintmodeinMinutes '6'}

When I get to the function, I get the below errors:

Cannot validate argument on parameter 'DisplayName'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command again. + CategoryInfo : InvalidData: (:) [Get-SCOMClassInstance], ParameterBindingValidationException + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.SystemCenter.OperationsManagerV10.Commands.GetSCClassInstanceCommand + PSComputerName : scomserver

The term 'Start-serverScommaintenance' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. + CategoryInfo : ObjectNotFound: (Start-serverScommaintenance:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException + PSComputerName : scomserver

Here is a copy of the function being used for reference:

function Start-ServerScommaintenance
{
param([string] $servername = 'yourServerGoeshere',
   [string]$message = "Putting: $servername into Maintenance Mode via     automation",
   [int]$maintModeinMinutes = '60')

$funcName = 'func - Start-ServerScommaintenance:'
if(get-command -Name 'Get-SCOMClassInstance')
{
    $server = (Get-SCOMClassInstance -DisplayName "$servername*") | select -first 1 | select -ExpandProperty Displayname
    $scommanagementServers = (Get-SCOMManagementServer).displayName
    if($scommanagementServers -ccontains $server)
    {
        Write-Warning "$funcname contains a Management Server $server.. You cannot put a management server in Maintenance Mode!!!"
    }
    else
    {
        $time = ((get-date).AddMinutes($maintModeinMinutes))
        $serverClassIds = Get-SCOMClassInstance -DisplayName $server
        foreach($classid in $serverClassIds)
        {
            $server1 = Get-SCOMClassInstance -id ($classid.id) | Where-Object{$_.DisplayName -match $server}
            write-host "$funcName putting " ($server1.id) ' in maintenance Mode Servername -->' ($Server1.DisplayName)
            if(!(Get-SCOMMaintenanceMode -Instance $classid))
            {
                Start-SCOMMaintenanceMode -Instance $server1 -EndTime $time -reason PlannedOther -Comment $message
            }
            else
            { Write-host "$funcname " $classid.id " has already been placed in Maintenance Mode"}
        }
    }
}
    else
    { Write-host "$funcname doesn't have the Operationsmanager module imported for this session"}
}

function Stop-ServerScommaintenance
{
param([string] $servername = 'yourServerGoeshere',
   [string]$message = "Removing Maintenance Mode from: $servername via     automation"
   )
$funcName = 'func - Stop-ServerScommaintenance:'
if(get-command -Name 'Get-SCOMClassInstance')
{
    $server = (Get-SCOMClassInstance -DisplayName "$servername*") | select -    first 1 | select -ExpandProperty Displayname
    $scommanagementServers = (Get-SCOMManagementServer).displayName
    if($scommanagementServers -ccontains $server)
    {
        Write-Warning "$funcname contains a Management Server $server.. You     cannot put a management server in Maintenance Mode!!!"
    }
    else
    {
        $serverClassIds = Get-SCOMClassInstance -DisplayName $server
        foreach($classid in $serverClassIds)
        {
            $server1 = Get-SCOMClassInstance -id ($classid.id) | Where-    Object{$_.DisplayName -match $server}
            write-host "$funcName removing " ($server1.id) ' in maintenance     Mode Servername -->' ($Server1.DisplayName)
            $result = (Get-SCOMClassInstance -id ($classid.id)|Where-Object{$_.Displayname -like $servername}).StopMaintenanceMode((get-date).ToUniversalTime())
        }
    }
}
else
{ Write-host "$funcname doesn't have the Operationsmanager module imported for this session"}
}
#Start-serverScommaintenance -servername Server1 -message "my message" -maintmodeinMinutes '30' 
#Stop-ServerScommaintenance -servername Server1 -message "my message"

BenH BenH · Accepted Answer · 2016-09-23T15:50:17

I believe that you need pass things with argumentlist in the when you use function, rather than call the function again with the args:

Invoke-Command -Session $s -Scriptblock ${function:Start-serverScommaintenance} -argumentlist #argshere

Cannot set SCOM maintenance mode remotely (Part2)

1 Answers