Gateway DMZOMGW2 Assigned Computers Group Discovery

SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group.Discovery (Discovery)

This discovery rule populates a group of Windows Computer Objects from a PowerShell Script

Element properties:

Object Discovery Details:

Member Modules:

Source Code:

<Discovery ID="SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group.Discovery" Enabled="true" Target="SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group" ConfirmDelivery="false" Remotable="true" Priority="Normal">

  <Category>Discovery</Category>

  <DiscoveryTypes>

    <DiscoveryClass TypeID="SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group"/>

  </DiscoveryTypes>

  <DataSource ID="DS" TypeID="Windows!Microsoft.Windows.TimedPowerShell.DiscoveryProvider">

    <IntervalSeconds>86331</IntervalSeconds>

    <SyncTime/>

    <ScriptName>SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group.Discovery.ps1</ScriptName>

    <ScriptBody><Script>

#=================================================================================

#  Group Population script based on PowerShell

#

#  Kevin Holman

#  v1.0

#=================================================================================

param($SourceID, $ManagedEntityID, [string]$GroupDisplayName)





# Manual Testing section - put stuff here for manually testing script - typically parameters:

#=================================================================================

# $SourceId = '{00000000-0000-0000-0000-000000000000}'

# $ManagedEntityId = '{00000000-0000-0000-0000-000000000000}'

# [string]$GroupDisplayName = "Gateway DMZOMGW1 Assigned Computers Group"

#=================================================================================





# Constants section - modify stuff here:

#=================================================================================

#Get the Gateway Name

$GroupDisplayNameSplit = $GroupDisplayName.Split(" ")

[string]$GWNetBIOSName = $GroupDisplayNameSplit[1]



# Assign script name variable for use in event logging

$ScriptName = "SCOM.GatewayMaintenanceMode." + $GWNetBIOSName + "Computers.Group.Discovery.ps1"

$EventID = "1236"

#=================================================================================





# Starting Script section - All scripts get this

#=================================================================================

# Gather the start time of the script

$StartTime = Get-Date

# Load MOMScript API

$momapi = New-Object -comObject MOM.ScriptAPI

# Load SCOM Discovery module

$DiscoveryData = $momapi.CreateDiscoveryData(0, $SourceId, $ManagedEntityId)

#Set variables to be used in logging events

$whoami = whoami

#Log script event that we are starting task

$momapi.LogScriptEvent($ScriptName,$EventID,0,"`n Script is starting. `n Running as ($whoami).")

#=================================================================================





# Connect to local SCOM Management Group Section

#=================================================================================

# Clear any previous errors

$Error.Clear()

# Import the OperationsManager module and connect to the management group

$SCOMPowerShellKey = "HKLM:\SOFTWARE\Microsoft\System Center Operations Manager\12\Setup\Powershell\V2"

$SCOMModulePath = Join-Path (Get-ItemProperty $SCOMPowerShellKey).InstallDirectory "OperationsManager"

Import-module $SCOMModulePath

New-DefaultManagementGroupConnection "localhost"

IF ($Error) 

{ 

  $momapi.LogScriptEvent($ScriptName,$EventID,1,"`n FATAL ERROR: Failure loading OperationsManager module or unable to connect to the management server. `n Terminating script. `n Error is: ($Error).")

  EXIT

}

#=================================================================================





# Begin MAIN script section

#=================================================================================

#Get the gateway object

$Gateway = Get-SCOMManagementServer | where {$_.Name &#x2013;match $GWNetBIOSName}

$Agents = Get-SCOMAgent -ManagementServer $Gateway



###Discovery Section

#Set the group instance ID

[string]$GroupInstanceID = "SCOM.GatewayMaintenanceMode." + $GWNetBIOSName + "Computers.Group"

#Set the Relationship instance ID

[string]$RelationshipInstanceID = "SCOM.GatewayMaintenanceMode." + $GWNetBIOSName + "Computers.Group.Contains.Windows.Computers"



#Set the group instance we will discover members of

$GroupInstance = $DiscoveryData.CreateClassInstance("$MPElement[Name='SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group']$")



# Loop through each Name and add a group membership containment relationship to the discovery data

$i=0;

FOREACH ($Agent in $Agents)

{

  [string]$AgentName = $Agent.Name

  $i = $i+1

  $ServerInstance = $DiscoveryData.CreateClassInstance("$MPElement[Name='Windows!Microsoft.Windows.Computer']$")

  $ServerInstance.AddProperty("$MPElement[Name='Windows!Microsoft.Windows.Computer']/PrincipalName$", $AgentName) 

  $RelationshipInstance = $DiscoveryData.CreateRelationshipInstance("$MPElement[Name='SCOM.GatewayMaintenanceMode.DMZOMGW2Computers.Group.Contains.Windows.Computers']$")

  $RelationshipInstance.Source = $GroupInstance

  $RelationshipInstance.Target = $ServerInstance

  $DiscoveryData.AddInstance($RelationshipInstance)   

}



IF ($i -ge 1)

{

  $momapi.LogScriptEvent($ScriptName,$EventID,0,"`nSuccessfully found ($i) Computers to add to the group: ($GroupInstanceID).")

}

ELSE

{

  $momapi.LogScriptEvent($ScriptName,$EventID,0,"`nERROR: No computers were found for Gateway: ($GWNetBIOSName). `nTerminating script.")

  EXIT

}



# Return Discovery Items Normally           

 $DiscoveryData



# Return Discovery Bag to the command line for testing (does not work from ISE)

# $momapi.Return($DiscoveryData)

#=================================================================================

# End MAIN script section





# End of script section

#=================================================================================

#Log an event for script ending and total execution time.

$EndTime = Get-Date

$ScriptTime = ($EndTime - $StartTime).TotalSeconds

$momapi.LogScriptEvent($ScriptName,$EventID,0,"`n Script Ending. `n Script Runtime: ($ScriptTime) seconds.")

#=================================================================================

#End Script

					</Script></ScriptBody>

    <Parameters>

      <Parameter>

        <Name>sourceId</Name>

        <Value>$MPElement$</Value>

      </Parameter>

      <Parameter>

        <Name>managedEntityId</Name>

        <Value>$Target/Id$</Value>

      </Parameter>

      <Parameter>

        <Name>GroupDisplayName</Name>

        <Value>$Target/Property[Type="System!System.Entity"]/DisplayName$</Value>

      </Parameter>

    </Parameters>

    <TimeoutSeconds>300</TimeoutSeconds>

  </DataSource>

</Discovery>