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SPSearchTopology doesn't work when NodeName is fully-qualified

See original GitHub issue

Details of the scenario you try and problem that is occurring: Creating a search topology does not work when NodeName is a fully-qualified domain name (e.g. server.domain.com instead of simply server)

In MSFT_SearchTopology.psm1, lines 250-257:

$searchService = Get-SPEnterpriseSearchServiceInstance -Identity $searchServer `
                                                       -ErrorAction SilentlyContinue
if ($null -eq $searchService)
{
    $domain = (Get-CimInstance -ClassName Win32_ComputerSystem).Domain
    $searchServer = "$searchServer.$domain"
    $searchService = Get-SPEnterpriseSearchServiceInstance -Identity $searchServer
}

Can we add a check for FQDN somewhere here? Something like… (edit: had the wrong operator)

if($searchServer -like '*.*') {
  $searchServer = $searchServer.Split('.')[0]
}

The DSC configuration that is using the resource: The resource, when called:

SPSearchTopology SearchTopology {
      PsDscRunAsCredential    = $Node.SetupAccount
      ServiceAppName          = 'Global Search'
      Admin                   = $AllNodes.Where({ 'Admin'               -in $_.SearchRoles }).NodeName
      Crawler                 = $AllNodes.Where({ 'Crawler'             -in $_.SearchRoles }).NodeName
      ContentProcessing       = $AllNodes.Where({ 'ContentProcessing'   -in $_.SearchRoles }).NodeName
      AnalyticsProcessing     = $AllNodes.Where({ 'AnalyticsProcessing' -in $_.SearchRoles }).NodeName
      QueryProcessing         = $AllNodes.Where({ 'QueryProcessing'     -in $_.SearchRoles }).NodeName
      IndexPartition          = $AllNodes.Where({ 'Index' -in $_.SearchRoles -and $_.IndexPartition -eq 0 }).NodeName
      FirstPartitionDirectory = Join-Path -Path $Node.SearchIndexFolder -ChildPath '0'
      DependsOn               = @('[SPSearchServiceApp]SearchServiceApp','[SPMinRoleCompliance]MinRoleCompliance')
  }

Sanitized sample of my PSD1:

@{
  AllNodes = @(

    @{
      NodeName          = '*'
      SearchIndexFolder = 'D:\Data\Index'
    },

    @{
      NodeName        = 'server.subdomain.domain.com'
      ServerRole      = 'ApplicationWithSearch'
      RunCentralAdmin = $true
      SearchRoles     = @('Admin','Crawler','ContentProcessing','AnalyticsProcessing','QueryProcessing','Index')
      IndexPartition  = 0
    },
}

Version of the Operating System and PowerShell the DSC Target Node is running: Server 2012 R2, Windows PowerShell 5.1

Version of SharePoint that is used (e.g. SharePoint 2016): SharePoint 2016, FP2

Version of the DSC module you’re using: 2.3.0.0