DSCResources/MSFT_xClusterPreferredOwner/MSFT_xClusterPreferredOwner.psm1
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# # MSFT_xClusterPreferredOwner: DSC resource to configure the Windows Failover Cluster Preferred Owner. # # # The Get-TargetResource cmdlet. # function Get-TargetResource { [OutputType([Hashtable])] param ( [parameter(Mandatory)] [string] $ClusterGroup, [parameter(Mandatory)] [string] $Clustername, [parameter(Mandatory)] [string[]] $Nodes, [string[]] $ClusterResources, [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present' ) Write-Verbose -Message "Retrieving Owner information for cluster $Clustername..." $ownernodes = @( Write-Verbose -Message "Retrieving Owner information for Cluster Group $ClusterGroup" (((Get-ClusterGroup -cluster $Clustername)| Where-Object {$_.name -like "$ClusterGroup"} | Get-ClusterOwnerNode).ownernodes).name if ($ClusterResources) { foreach ($resource in $ClusterResources) { Write-Verbose -Message "Retrieving Owner information for Cluster Resource $resource" (((Get-ClusterResource -cluster $Clustername)| Where-Object {$_.name -like "$resource"} | Get-ClusterOwnerNode).ownernodes).name } } ) $ownernodes = $ownernodes | Select-Object -Unique $returnValue = @{ ClusterGroup = $ClusterGroup Clustername = $Clustername Nodes = $ownernodes ClusterResources = $ClusterResources Ensure = $Ensure } $returnValue } # # The Set-TargetResource cmdlet. # function Set-TargetResource { param ( [parameter(Mandatory)] [string] $ClusterGroup, [parameter(Mandatory)] [string] $Clustername, [parameter(Mandatory)] [string[]] $Nodes, [string[]] $ClusterResources, [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present' ) Write-Verbose -Message "Retrieving all owners from cluster $Clustername" $allnodes = (Get-ClusterNode -cluster $ClusterName).name if ($Ensure -eq 'Present') { Write-Verbose -Message "Setting Cluster owners for Group $ClusterGroup to $nodes" $null = (Get-ClusterGroup -cluster $ClusterName)| Where-Object {$_.name -like $ClusterGroup} | Set-ClusterOwnerNode $Nodes $null = (Get-ClusterResource)| Where-Object {$_.OwnerGroup -like $ClusterGroup} | Set-ClusterOwnerNode $allnodes Write-Verbose -Message "Moving Cluster Group $ClusterGroup to node $($nodes[0])" $null = (Get-ClusterGroup -cluster $ClusterName)| Where-Object {$_.name -like $ClusterGroup} | Move-ClusterGroup -Node $Nodes[0] foreach ($resource in $ClusterResources) { Write-Verbose -Message "Setting Cluster owners for Resource $resource to $nodes" $null = (Get-ClusterResource -cluster $Clustername)| Where-Object {$_.name -like "$resource"} | Set-ClusterOwnerNode -owners $Nodes } } if ($Ensure -eq 'Absent') { Write-Verbose -Message "Retrieving current clusterowners for group $ClusterGroup" $currentowners = (((Get-ClusterGroup -cluster $Clustername)| Where-Object {$_.name -like "$ClusterGroup"} | Get-ClusterOwnerNode).ownernodes).name | Sort-Object -Unique $newowners = @( foreach ($currentowner in $currentowners) { if ($Nodes -notcontains $currentowner) { $currentowner } } ) Write-Verbose -Message "Removing owners from group $($ClusterGroup): $Nodes" $null = (Get-ClusterGroup -cluster $ClusterName)| Where-Object {$_.name -like $ClusterGroup} | Set-ClusterOwnerNode $newowners Write-Verbose -Message "Setting Cluster owners for Group $ClusterGroup to $newowners" $null = (Get-ClusterResource)| Where-Object {$_.OwnerGroup -like $ClusterGroup} | Set-ClusterOwnerNode $allnodes Write-Verbose -Message "Moving Cluster Group $ClusterGroup to node $($newowners[0])" $null = (Get-ClusterGroup -cluster $ClusterName)| Where-Object {$_.name -like $ClusterGroup} | Move-ClusterGroup -Node $newowners[0] foreach ($resource in $ClusterResources) { Write-Verbose -Message "Retrieving current clusterowners for resource $resource" $currentowners = ((Get-ClusterResource -cluster $Clustername | Where-Object {$_.name -like "$resource"} | Get-ClusterOwnerNode).ownernodes).name | Sort-Object -Unique $newowners = @( foreach ($currentowner in $currentowners) { if ($Nodes -notcontains $currentowner) { $currentowner } } ) Write-Verbose -Message "Setting Cluster owners for Resource $resource to $newowners" $null = Get-ClusterResource -cluster $Clustername | Where-Object {$_.name -like "$resource"} | Set-ClusterOwnerNode -owners $newowners } } } # # Test-TargetResource # function Test-TargetResource { [OutputType([Boolean])] param ( [parameter(Mandatory)] [string] $ClusterGroup, [parameter(Mandatory)] [string] $Clustername, [parameter(Mandatory)] [string[]] $Nodes, [string[]] $ClusterResources, [ValidateSet('Present', 'Absent')] [String] $Ensure = 'Present' ) Write-Verbose -Message "Testing Owner information for cluster $Clustername..." $getinfo = (Get-TargetResource @PSBoundParameters).Nodes $result = $true if ($Ensure -eq 'Present') { foreach ($object in $getinfo) { if ($Nodes -notcontains $object) { Write-Verbose -Message "$object was NOT found as possible owner" $result = $false } } foreach ($object in $nodes) { if ($getinfo -notcontains $object) { Write-Verbose -Message "$object was NOT found as possible owner" $result = $false } } } if ($Ensure -eq 'Absent') { foreach ($object in $getinfo) { if ($Nodes -contains $object) { Write-Verbose -Message "$object WAS found as possible owner" $result = $false } } foreach ($object in $nodes) { if ($getinfo -contains $object) { Write-Verbose -Message "$object WAS found as possible owner" $result = $false } } } $result } |