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Microsoft.ActiveDirectoryFederationServices.2016.FederationServerSPNMonitor (UnitMonitor)

Knowledge Base article:

Element properties:

Source Code:

<UnitMonitor ID="Microsoft.ActiveDirectoryFederationServices.2016.FederationServerSPNMonitor" Accessibility="Public" Enabled="true" Target="Microsoft.ActiveDirectoryFederationServices.2016.FederationServer" ParentMonitorID="Health!System.Health.ConfigurationState" Remotable="true" Priority="Normal" TypeID="Microsoft.ActiveDirectoryFederationServices.2016.TwoStateScriptMonitorType" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.ActiveDirectoryFederationServices.2016.FederationServerSPNMonitor_AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Warning</AlertSeverity>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Success" MonitorTypeStateID="Success" HealthState="Success"/>

    <OperationalState ID="Error" MonitorTypeStateID="Error" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <PowerShellPath>%windir%\system32\windowspowershell\v1.0\powershell.exe</PowerShellPath>

    <ScriptName>FederationServerSPNCheck.ps1</ScriptName>

    <ScriptBody><Script>

                        function GetDomainUser ([string] $domainUser, [ref]$domain, [ref]$user)

                        {

                        $splitacct = $domainUser.Split( '\' )

                        if ( $splitacct.Length -ne 2 -OR [String]::IsNullOrEmpty( $splitacct[ 0 ] ) -OR [String]::IsNullOrEmpty( $splitacct[ 1 ] ) )

                        {

                        return

                        }

                        $domain.Value = $splitacct[ 0 ]

                        $user.Value = $splitacct[ 1 ]

                        }



                        Import-Module adfs



                        $scomapi = new-object -comObject "MOM.ScriptAPI"

                        $script:spnSet = $true

                        $script:account = ""

                        $script:expectedSpn = ""

                        $script:shouldContinue = $true



                        $serviceWMIObject = (get-wmiobject  -query "select * from win32_service where name='adfssrv'")

                        $script:account = $serviceWMIObject.StartName

                        $serviceRunning = $serviceWMIObject.Started



                        if ($serviceRunning)

                        {

                        &amp;{

                        $domainName = ""

                        $userName = ""

                        $domainDirEntry = $null

                        $dirCtx = $null



                        GetDomainUser  $script:account ([ref]$domainName) ([ref]$userName)

                        if ([String]::IsNullOrEmpty($domainName) -ne $true)

                        {

                        $adfsProperties = Get-ADFSProperties

                        $script:expectedSpn = [String]::Format( [System.Globalization.CultureInfo]::InvariantCulture, "host/{0}" , $adfsProperties.HostName)



                        $temp = [System.Reflection.Assembly]::LoadWithPartialName("System.DirectoryServices")

                        $dirCtx = new-object System.DirectoryServices.ActiveDirectory.DirectoryContext( [System.DirectoryServices.ActiveDirectory.DirectoryContextType]::Domain, $domainName)



                        &amp;{

                        $domain = [System.DirectoryServices.ActiveDirectory.Domain]::GetDomain( $dirCtx  )

                        $domainDirEntry = $domain.GetDirectoryEntry()

                        }

                        Trap [System.Exception]

                        {

                        $script:shouldContinue = $false

                        #ignore

                        continue

                        }



                        if ($script:shouldContinue)

                        {

                        $propertiesToLoad = "servicePrincipalName"

                        $filter = [String]::Format( [System.Globalization.CultureInfo]::InvariantCulture,"(&amp;(sAMAccountName={0}))", $userName )

                        $src = new-object System.DirectoryServices.DirectorySearcher( $domainDirEntry )

                        $temp = $src.PropertiesToLoad.Add( $propertiesToLoad )

                        $src.Filter = $filter

                        $searchResult = $src.FindOne()

                        if ( ($searchResult -eq $null) -or ($searchResult.Properties -eq $null))

                        {

                        $script:spnSet = $false

                        }

                        else

                        {

                        $dirEntry = $searchResult.GetDirectoryEntry()

                        $script:spnSet = $false

                        if ( $dirEntry.Properties["servicePrincipalName"] -ne $null )

                        {

                        foreach ( $registeredSpn in $dirEntry.Properties["servicePrincipalName"] )

                        {

                        if ( ($registeredSpn -ne $null) -and ([StringComparer]::OrdinalIgnoreCase.Equals( $registeredSpn, $script:expectedSpn)) )

                        {

                        $script:spnSet = $true

                        break

                        }

                        }

                        }

                        }

                        }

                        }

                        }

                        Trap [System.Exception]

                        {

                        #ignore

                        continue

                        }

                        }



                        $scompb = $scomapi.CreatePropertyBag()

                        $scompb.AddValue("SPNSet",  $script:spnSet )

                        $scompb.AddValue("Account",  $script:account )

                        $scompb.AddValue("ExpectedSPN",  $script:expectedSpn )

                        $scomapi.AddItem($scompb)

                        $scomapi.ReturnItems()

                    </Script></ScriptBody>

    <IntervalSeconds>900</IntervalSeconds>

    <TimeoutSeconds>180</TimeoutSeconds>

    <ErrorExpression>

      <SimpleExpression>

        <ValueExpression>

          <XPathQuery Type="String">Property[@Name='SPNSet']</XPathQuery>

        </ValueExpression>

        <Operator>Equal</Operator>

        <ValueExpression>

          <Value Type="String">false</Value>

        </ValueExpression>

      </SimpleExpression>

    </ErrorExpression>

    <SuccessExpression>

      <SimpleExpression>

        <ValueExpression>

          <XPathQuery Type="String">Property[@Name='SPNSet']</XPathQuery>

        </ValueExpression>

        <Operator>Equal</Operator>

        <ValueExpression>

          <Value Type="String">true</Value>

        </ValueExpression>

      </SimpleExpression>

    </SuccessExpression>

  </Configuration>

</UnitMonitor>