How to create a SCOM discovery override using powershell

This is script that can be used to create a scom discovery override using powershell.


## Usage:
## Check the overridable paramters for your discoveries first and then change the parameter you would like to set in $override.Parameter. The format of the parameter may be like
## Selector          : $Config/PeriodInSeconds$. You should only add the "PeriodInSeconds" part
#$disc = Get-SCOMDiscovery -DisplayName "Windows Internet Information Services Web Applications 76-100 Discovery Rule"
## $discovery.GetOverrideableParameters()


Import-module operationsmanager
New-SCOMManagementGroupConnection -ComputerName MyRMS
$mps = Get-SCOMManagementPack |?{$_.name -match "Microsoft.Windows.InternetInformationServices.2003"}
$overridemp = Get-SCOMManagementPack -Name "IIS.Management.Pack.Discovery.Overrides"
$discoveries = Get-SCOMDiscovery -ManagementPack $mps

foreach($discovery in $discoveries)
{
if($discovery.Enabled -ne "false")
{

$override = $null
$overridemp = Get-SCOMManagementPack -Name "IIS.Management.Pack.Discovery.Overrides"
$Target= Get-SCOMClass -id $discovery.Target.Id

$overridename = $discovery.name + ".Override"
$override = New-Object Microsoft.EnterpriseManagement.Configuration.ManagementPackDiscoveryConfigurationOverride($overridemp,$overridename)
$override.Discovery = $discovery
$override.Module = $discovery.DataSource
$override.Parameter = "PeriodInSeconds"
$override.value = 86400
$override.DisplayName = $overridename
$override.Context = $Target

}
}

$overridemp.Verify() ## This may fail sometimes with a validation error on 2012 R2. So just remove this line and check if your mp imports.
$overridemp.AcceptChanges()

Users cannot view ACS reports.

For the ACS reports the permissions have to be configured in SCOM.

Click Administration--User Roles

If you do not have a role created. Create a new role called "ACS report viewers"

In the tab that opens add the groups in your AD or users in your AD that you would like to have permissions to view reports.

Scom Maintenance mode scheduler

#SCOM Maintenance mode scheduler. The assemblies can be found in this folder on your management servers  C:\Program Files\Microsoft System Center 2012 R2\Operations Manager\Server\SDK Binaries

$scriptdir = Get-location
$ScriptDir = split-path -parent $MyInvocation.MyCommand.Path
$void = [System.Reflection.Assembly]::LoadFile("$scriptdir\Microsoft.EnterpriseManagement.OperationsManager.dll")
$void3 = [System.Reflection.Assembly]::LoadFile("$scriptdir\Microsoft.EnterpriseManagement.Runtime.dll")
$void1 = [System.Reflection.Assembly]::LoadFile("$scriptdir\Microsoft.EnterpriseManagement.Core.dll")

$server = "testsql"

$RootMS = "testdc01"
$Minutes =  60
$Comment = "Scheduled Maintenance Request"
$MGConnSetting = New-Object Microsoft.EnterpriseManagement.ManagementGroupConnectionSettings($RootMS)
$MG = New-Object Microsoft.EnterpriseManagement.ManagementGroup($MGConnSetting)
$Admin = $MG.GetAdministration()
$Agents = $admin.GetAllAgentManagedComputers()
$agent = $Agents | ?{$_.Computername -match $server}
$monitoring =$MG.Monitoring
$AllClasses = $MG.GetMonitoringClasses()
$MyClass = $AllClasses | ?{$_.name -eq "Microsoft.Windows.Computer"}
$Objects = $Mg.GetMonitoringObjects($Myclass)
$Object = $Objects | ?{$_.name -match $server}
$Object.schedulemaintenancemode
$startTime = [Datetime]'12/21/2016 04:26:00'
$StartTimeUTC = $startTime.ToUniversalTime()
$EndTime = $startTimeUTC.AddMinutes('10')
$Object.ScheduleMaintenanceMode($startTimeUTC,$EndTime,"PlannedOther",$Comment)