How do I get additional parameters into a Linux Script / PowerShell Discovery?

Question

Hi all,
I'm trying to do a Linux Shell / PowerShell discovery as described in
http://operatingquadrant.com/2013/07/30/unixlinux-mp-authoring-discovering-and-monitoring-failover-clusters/ but for the
complex logic I need the GUID of the target object and the GUID of the discovery itself ($MPElement$ and $Target/Id$) as additional arguments to either of the scripts.
I tried to insert them into the "ScriptArguments" tag - but they don't show up in either of the scripts.
I tried to edit the code in VSAE, but it complains: "Could not find schema information for the element 'Scheduler'."
I added the (SCSM) "Management Pack Schema Version 1.1 XSD" as described in the blog
VSAE - Could not find schema information, but this also does not help.
Any ideas?
Thanks, Holger
Holger alias "Marvin", the InternetSmurf, Munich, Germany // Where can I edit / remove this signature line? Please do not say "in your profile" - I searched all the profiles I found ...

Answer 1

Hi Bob or Vladimir,
here comes the code - I shortened it, I hope, everything necessary is contained:
<TypeDefinitions>
<ModuleTypes>
<DataSourceModuleType ID="MyMP.Linux.XYZ.ServerDiscoveryDataSource" Accessibility="Internal" Batching="false">
<Configuration>
<IncludeSchemaTypes>
<SchemaType>System!System.Discovery.MapperSchema</SchemaType>
<SchemaType>System!System.ExpressionEvaluatorSchema</SchemaType>
</IncludeSchemaTypes>
<xsd:element name="Interval" type="xsd:integer" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="TargetSystem" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="ShellCommand" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="ScriptArguments" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="Timeout" type="xsd:integer" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="UserName" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="Password" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="PSScriptName" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="PSScriptBody" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="FilterExpression" type="ExpressionType" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="ClassId" type="xsd:string" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
<xsd:element name="InstanceSettings" type="SettingsType" minOccurs="1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
</Configuration>
<OverrideableParameters>
<OverrideableParameter ID="Interval" Selector="$Config/Interval$" ParameterType="int" />
<OverrideableParameter ID="Timeout" Selector="$Config/Timeout$" ParameterType="int" />
</OverrideableParameters>
<ModuleImplementation Isolation="Any">
<Composite>
<MemberModules>
<DataSource ID="Scheduler" TypeID="System!System.Discovery.Scheduler">
<Scheduler>
<SimpleReccuringSchedule>
<Interval>$Config/Interval$</Interval>
<SyncTime />
</SimpleReccuringSchedule>
<ExcludeDates />
</Scheduler>
</DataSource>
<ProbeAction ID="InvokeProbe" TypeID="Unix.Authoring.ShellCommand.PropertyBag.ProbeAction">
<TargetSystem>$Config/TargetSystem$</TargetSystem>
<ShellCommand>$Config/ShellCommand$</ShellCommand>
<ScriptArguments>$Config/ScriptArguments$</ScriptArguments>
<Timeout>$Config/Timeout$</Timeout>
<UserName>$Config/UserName$</UserName>
<Password>$Config/Password$</Password>
<PSScriptName>$Config/PSScriptName$</PSScriptName>
<PSScriptBody>$Config/PSScriptBody$</PSScriptBody>
</ProbeAction>
<ConditionDetection ID="Filter" TypeID="System!System.ExpressionFilter">
<Expression>$Config/FilterExpression$</Expression>
</ConditionDetection>
<ConditionDetection ID="Mapper" TypeID="System!System.Discovery.ClassSnapshotDataMapper">
<ClassId>$Config/ClassId$</ClassId>
<InstanceSettings>$Config/InstanceSettings$</InstanceSettings>
</ConditionDetection>
</MemberModules>
<Composition>
<Node ID="Mapper">
<Node ID="Filter">
<Node ID="InvokeProbe">
<Node ID="Scheduler" />
</Node>
</Node>
</Node>
</Composition>
</Composite>
</ModuleImplementation>
<OutputType>System!System.Discovery.Data</OutputType>
</DataSourceModuleType>
</ModuleTypes>
</TypeDefinitions>
<!-- ********** Monitoring ********** -->
<Monitoring>
<Discoveries>
<!-- ***** XYZ Linux Server Discovery ***** -->
<Discovery ID="MyMP.Linux.XYZ.ServerDiscoveryRule" Enabled="true" Target="Unix!Microsoft.Unix.Computer" ConfirmDelivery="false" Remotable="true" Priority="Normal">
<Category>Discovery</Category>
<DiscoveryTypes>
<DiscoveryClass TypeID="MyMP.Linux.XYZ.Server">
<Property TypeID="MyMP.Linux.Server" PropertyID="NetworkName" />
<Property TypeID="MyMP.Linux.Server" PropertyID="Manufacturer" />
<Property TypeID="MyMP.Linux.Server" PropertyID="Model" />
</DiscoveryClass>
</DiscoveryTypes>
<DataSource ID="DS" TypeID="MyMP.Linux.XYZ.ServerDiscoveryDataSource">
<Interval>600</Interval>
<TargetSystem>$Target/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$</TargetSystem>
<ShellCommand>
<![CDATA[
logfile="/tmp/scom.ServerDiscovery.log"
echo "--------------------------------------" >> $logfile
echo `date` >> $logfile
echo Arguments: $* >> $logfile
echo Arguments: .$1. .$2. .$3. .$4. .$5. >> $logfile
export returnstring=""
export systemmanufacturer=`dmidecode -s system-manufacturer | sed -e 's/^ *//' -e 's/ *$//'`
echo "systemmanufacturer=$systemmanufacturer" >> $logfile
returnstring="$returnstring#systemmanufacturer=$systemmanufacturer"
export systemproductname=`dmidecode -s system-product-name | sed -e 's/^ *//' -e 's/ *$//'`
echo "systemproductname=$systemproductname" >> $logfile
returnstring="$returnstring#systemproductname=$systemproductname"
echo "Done." >> $logfile
echo "--------------------------------------" >> $logfile
echo "$returnstring" >> $logfile
echo "======================================" >> $logfile
echo "$returnstring"
#echo "ServerDiscovery=Done"
]]></ShellCommand>
<ScriptArguments>$MPElement$ $Target/Id$ $Target/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$ $MPElement$ $Target/Id$</ScriptArguments>
<Timeout>300</Timeout>
<UserName>$RunAs[Name="Unix!Microsoft.Unix.PrivilegedAccount"]/UserName$</UserName>
<Password>$RunAs[Name="Unix!Microsoft.Unix.PrivilegedAccount"]/Password$</Password>
<PSScriptName>ServerDiscovery.ps1</PSScriptName>
<PSScriptBody>
<![CDATA[
# Copyright (C) MyCompany 2014
# ServerDiscovery.ps1
# Summary:
# Discover XYZ Linux Server.
Param (
[string]$StdOut,
[string]$StdErr,
[string]$ReturnCode,
[string]$param4,
[string]$param5
$LogFile = "C:\scom\ServerDiscovery.log"
$SplitChar = "#"
function Main
Param (
[string]$StdOut,
[string]$StdErr,
[string]$ReturnCode,
[string]$param4,
[string]$param5
DebugOut "-------------------------------------------------"
DebugOut "Starting ServerDiscovery.ps1"
DebugOut "$(Get-Date -Format F)"
DebugOut "1 StdOut: $StdOut"
DebugOut "2 StdErr: $StdErr"
DebugOut "3 ReturnCode: $ReturnCode"
DebugOut "4 param4: $param4"
DebugOut "5 param5: $param5"
if ($ReturnCode -eq "0")
$serverProperties = $StdOut.split($SplitChar)
foreach ($obj in $serverProperties)
if ($obj -ne $null)
$property = $obj.split("=")[0]
$value = $obj.split("=")[1]
switch ($property)
"sourceid" { $SourceId = $value }
"managedentityid" { $ManagedEntityId = $value }
"hostname" { $PrincipalName = $value
$TargetComputer = $value }
"systemmanufacturer" { $Manufacturer = $value }
"systemproductname" { $ModelName = $value }
default { DebugOut "unknown Property/Value-Pair: $obj" }
DebugOut "PrincipalName: [$PrincipalName]"
DebugOut "TargetComputer: [$TargetComputer]"
DebugOut "Manufacturer: [$Manufacturer]"
DebugOut "ModelName: [$ModelName]"
$oAPI = New-Object -ComObject "MOM.ScriptAPI"
$oDiscoveryData = $oAPI.CreateDiscoveryData($SourceType, "{$SourceId}", "{$ManagedEntityId}")
$oInst = $oDiscoveryData.CreateClassInstance("$MPElement[Name='MyMP.Linux.XYZ.XYZServer']$")
$oInst.AddProperty("$MPElement[Name='Unix!Microsoft.Unix.Computer']/PrincipalName$", $PrincipalName)
$oInst.AddProperty("$MPElement[Name='System!System.Entity']/DisplayName$", $TargetComputer)
$oInst.AddProperty("$MPElement[Name='MyMP.Linux.Server']/NetworkName$", $TargetComputer)
$oInst.AddProperty("$MPElement[Name='MyMP.Linux.Server']/Model$", $ModelName)
$oInst.AddProperty("$MPElement[Name='MyMP.Linux.Server']/Manufacturer$", $Manufacturer)
#*** Send the data to OpsMgr
DebugOut "***** Return oDiscoveryData to OM; Normal exit *****"
$oAPI.Return($oDiscoveryData) # Submit the data
DebugOut ""
DebugOut "***** Normal end of script. *****"
Exit 0
else
DebugOut "No SourceId, no DiscoveryData ..."
DebugOut "***** Bad ReturnCode $ReturnCode. End of script. *****"
Exit $ReturnCode
} # End of Main
function DebugOut([string]$Text, [int]$dbg)
Write-Host $Text
echo $Text >> $LogFile
Main $StdOut $StdErr $ReturnCode $param4 $param5
]]></PSScriptBody>
<FilterExpression />
<ClassId>$MPElement[Name="MyMP.Linux.Server"]$</ClassId>
<InstanceSettings>
<Settings>
<Setting>
<Name>$MPElement[Name='Unix!Microsoft.Unix.Computer']/PrincipalName$</Name>
<Value>$Target/Property[Type="Unix!Microsoft.Unix.Computer"]/PrincipalName$</Value>
</Setting>
<Setting>
<Name>$MPElement[Name='MyMP.Linux.Server']/NetworkName$</Name>
<Value>$Data/Property[@Name='NetworkName']$</Value>
</Setting>
<Setting>
<Name>$MPElement[Name='System!System.Entity']/DisplayName$</Name>
<Value>NetworkName: $Data/Property[@Name='NetworkName']$</Value>
</Setting>
</Settings>
</InstanceSettings>
</DataSource>
</Discovery>
</Discoveries>
</Monitoring>
Thanks, Holger.
Holger alias InternetSmurf, Munich, Germany