DSCResources/MSFT_xVMHyperV/MSFT_xVMHyperV.psm1
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function Get-TargetResource { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [parameter(Mandatory = $true)] [String]$Name, [parameter(Mandatory = $true)] [String]$VhdPath ) # Check if Hyper-V module is present for Hyper-V cmdlets if(!(Get-Module -ListAvailable -Name Hyper-V)) { Throw "Please ensure that Hyper-V role is installed with its PowerShell module" } $vmobj = Get-VM -Name $Name -ErrorAction SilentlyContinue # Check if 1 or 0 VM with name = $name exist if($vmobj.count -gt 1) { Throw "More than one VM with the name $Name exist." } @{ Name = $Name VhdPath = $vmObj.HardDrives[0].Path SwitchName = $vmObj.NetworkAdapters[0].SwitchName State = $vmobj.State Path = $vmobj.Path Generation = if($vmobj.Generation -eq 1){"Vhd"}else{"Vhdx"} StartupMemory = $vmobj.MemoryStartup MinimumMemory = $vmobj.MemoryMinimum MaximumMemory = $vmobj.MemoryMaximum MACAddress = $vmObj.NetWorkAdapters[0].MacAddress ProcessorCount = $vmobj.ProcessorCount Ensure = if($vmobj){"Present"}else{"Absent"} ID = $vmobj.Id Status = $vmobj.Status CPUUsage = $vmobj.CPUUsage MemoryAssigned = $vmobj.MemoryAssigned Uptime = $vmobj.Uptime CreationTime = $vmobj.CreationTime HasDynamicMemory = $vmobj.DynamicMemoryEnabled NetworkAdapters = $vmobj.NetworkAdapters.IPAddresses } } function Set-TargetResource { [CmdletBinding()] param ( # Name of the VM [parameter(Mandatory)] [String]$Name, # VHD associated with the VM [parameter(Mandatory)] [String]$VhdPath, # Virtual switch associated with the VM [String]$SwitchName, # State of the VM [ValidateSet("Running","Paused","Off")] [String]$State = "Off", # Folder where the VM data will be stored [String]$Path, # Associated Virtual disk format - Vhd or Vhdx [ValidateSet("Vhd","Vhdx")] [String]$Generation = "Vhd", # Startup RAM for the VM [ValidateRange(32MB,17342MB)] [UInt64]$StartupMemory, # Minimum RAM for the VM. This enables dynamic memory [ValidateRange(32MB,17342MB)] [UInt64]$MinimumMemory, # Maximum RAM for the VM. This enables dynamic memory [ValidateRange(32MB,1048576MB)] [UInt64]$MaximumMemory, # MAC address of the VM [String]$MACAddress, # Processor count for the VM [UInt32]$ProcessorCount, # Waits for VM to get valid IP address [Boolean]$WaitForIP, # If specified, shutdowns and restarts the VM as needed for property changes [Boolean]$RestartIfNeeded, # Should the VM be created or deleted [ValidateSet("Present","Absent")] [String]$Ensure = "Present" ) # Check if Hyper-V module is present for Hyper-V cmdlets if(!(Get-Module -ListAvailable -Name Hyper-V)) { Throw "Please ensure that Hyper-V role is installed with its PowerShell module" } Write-Verbose -Message "Checking if VM $Name exists ..." $vmObj = Get-VM -Name $Name -ErrorAction SilentlyContinue # VM already exists if($vmObj) { Write-Verbose -Message "VM $Name exists" # If VM shouldn't be there, stop it and remove it if($Ensure -eq "Absent") { Write-Verbose -Message "VM $Name should be $Ensure" Get-VM $Name | Stop-VM -Force -Passthru -WarningAction SilentlyContinue | Remove-VM -Force Write-Verbose -Message "VM $Name is $Ensure" } # If VM is present, check its state, startup memory, minimum memory, maximum memory,processor countand mac address # One cannot set the VM's vhdpath, path, generation and switchName after creation else { # If the VM is not in right state, set it to right state if($vmObj.State -ne $State) { Write-Verbose -Message "VM $Name is not $State. Expected $State, actual $($vmObj.State)" Set-VMState -Name $Name -State $State -WaitForIP $WaitForIP Write-Verbose -Message "VM $Name is now $State" } $changeProperty = @{} # If the VM does not have the right startup memory if($StartupMemory -and ($vmObj.MemoryStartup -ne $StartupMemory)) { Write-Verbose -Message "VM $Name does not have correct startup memory. Expected $StartupMemory, actual $($vmObj.MemoryStartup)" $changeProperty["MemoryStartup"]=$StartupMemory } elseif($MinimumMemory -and ($vmObj.MemoryStartup -lt $MinimumMemory)) { Write-Verbose -Message "VM $Name has a startup memory $($vmObj.MemoryStartup) lesser than minimum memory $MinimumMemory. Setting startup memory to be equal to $MinimumMemory" $changeProperty["MemoryStartup"]=$MinimumMemory } elseif($MaximumMemory -and ($vmObj.MemoryStartup -gt $MaximumMemory)) { Write-Verbose -Message "VM $Name has a startup memory $($vmObj.MemoryStartup) greater than maximum memory $MaximumMemory. Setting startup memory to be equal to $MaximumMemory" $changeProperty["MemoryStartup"]=$MaximumMemory } # If the VM does not have the right minimum or maximum memory, stop the VM, set the right memory, start the VM if($MinimumMemory -or $MaximumMemory) { $changeProperty["DynamicMemory"]=$true if($MinimumMemory -and ($vmObj.Memoryminimum -ne $MinimumMemory)) { Write-Verbose -Message "VM $Name does not have correct minimum memory. Expected $MinimumMemory, actual $($vmObj.MemoryMinimum)" $changeProperty["MemoryMinimum"]=$MinimumMemory } if($MaximumMemory -and ($vmObj.Memorymaximum -ne $MaximumMemory)) { Write-Verbose -Message "VM $Name does not have correct maximum memory. Expected $MaximumMemory, actual $($vmObj.MemoryMaximum)" $changeProperty["MemoryMaximum"]=$MaximumMemory } } # If the VM does not have the right processor count, stop the VM, set the right memory, start the VM if($ProcessorCount -and ($vmObj.ProcessorCount -ne $ProcessorCount)) { Write-Verbose -Message "VM $Name does not have correct processor count. Expected $ProcessorCount, actual $($vmObj.ProcessorCount)" $changeProperty["ProcessorCount"]=$ProcessorCount } # Stop the VM, set the right properties, start the VM Change-VMProperty -Name $Name -VMCommand "Set-VM" -ChangeProperty $changeProperty -WaitForIP $WaitForIP -RestartIfNeeded $RestartIfNeeded # If the VM does not have the right MACAddress, stop the VM, set the right MACAddress, start the VM if($MACAddress -and ($vmObj.NetWorkAdapters.MacAddress -notcontains $MACAddress)) { Write-Verbose -Message "VM $Name does not have correct MACAddress. Expected $MACAddress, actual $($vmObj.NetWorkAdapters[0].MacAddress)" Change-VMProperty -Name $Name -VMCommand "Set-VMNetworkAdapter" -ChangeProperty @{StaticMacAddress=$MACAddress} -WaitForIP $WaitForIP -RestartIfNeeded $RestartIfNeeded Write-Verbose -Message "VM $Name now has correct MACAddress." } } } # VM is not present, create one else { Write-Verbose -Message "VM $Name does not exists" if($Ensure -eq "Present") { Write-Verbose -Message "Creating VM $Name ..." $parameters = @{} $parameters["Name"] = $Name $parameters["VHDPath"] = $VhdPath # Optional parameters if($SwitchName){$parameters["SwitchName"]=$SwitchName} if($Path){$parameters["Path"]=$Path} if($Generation){$parameters["Generation"]=if($Generation -eq "Vhd"){1}else{2}} $defaultStartupMemory = 512MB if($StartupMemory){$parameters["MemoryStartupBytes"]=$StartupMemory} elseif($MinimumMemory -and $defaultStartupMemory -lt $MinimumMemory){$parameters["MemoryStartupBytes"]=$MinimumMemory} elseif($MaximumMemory -and $defaultStartupMemory -gt $MaximumMemory){$parameters["MemoryStartupBytes"]=$MaximumMemory} $null = New-VM @parameters $parameters = @{} $parameters["Name"] = $Name if($MinimumMemory -or $MaximumMemory) { $parameters["DynamicMemory"]=$true if($MinimumMemory){$parameters["MemoryMinimumBytes"]=$MinimumMemory} if($MaximumMemory){$parameters["MemoryMaximumBytes"]=$MaximumMemory} } if($ProcessorCount){$parameters["ProcessorCount"]=$ProcessorCount} $null = Set-VM @parameters if($MACAddress) { Set-VMNetworkAdapter -VMName $Name -StaticMacAddress $MACAddress } Set-VMState -Name $Name -State $State -WaitForIP $WaitForIP Write-Verbose -Message "VM $Name created and is $State" } } } function Test-TargetResource { [CmdletBinding()] [OutputType([System.Boolean])] param ( # Name of the VM [parameter(Mandatory)] [String]$Name, # VHD associated with the VM [parameter(Mandatory)] [String]$VhdPath, # Virtual switch associated with the VM [String]$SwitchName, # State of the VM [ValidateSet("Running","Paused","Off")] [String]$State = "Off", # Folder where the VM data will be stored [String]$Path, # Associated Virtual disk format - Vhd or Vhdx [ValidateSet("Vhd","Vhdx")] [String]$Generation = "Vhd", # Startup RAM for the VM [ValidateRange(32MB,17342MB)] [UInt64]$StartupMemory, # Minimum RAM for the VM. This enables dynamic memory [ValidateRange(32MB,17342MB)] [UInt64]$MinimumMemory, # Maximum RAM for the VM. This enables dynamic memory [ValidateRange(32MB,1048576MB)] [UInt64]$MaximumMemory, # MAC address of the VM [String]$MACAddress, # Processor count for the VM [UInt32]$ProcessorCount, # Waits for VM to get valid IP address [Boolean]$WaitForIP, # If specified, shutdowns and restarts the VM as needed for property changes [Boolean]$RestartIfNeeded, # Should the VM be created or deleted [ValidateSet("Present","Absent")] [String]$Ensure = "Present" ) #region input validation # Check if Hyper-V module is present for Hyper-V cmdlets if(!(Get-Module -ListAvailable -Name Hyper-V)) { Throw "Please ensure that Hyper-V role is installed with its PowerShell module" } # Check if 1 or 0 VM with name = $name exist if((Get-VM -Name $Name -ErrorAction SilentlyContinue).count -gt 1) { Throw "More than one VM with the name $Name exist." } # Check if $VhdPath exist if(!(Test-Path $VhdPath)) { Throw "$VhdPath does not exists" } # Check if Minimum memory is less than StartUpmemory if($StartupMemory -and $MinimumMemory -and ($MinimumMemory -gt $StartupMemory)) { Throw "MinimumMemory($MinimumMemory) should not be greater than StartupMemory($StartupMemory)" } # Check if Minimum memory is greater than Maximummemory if($MaximumMemory -and $MinimumMemory -and ($MinimumMemory -gt $MaximumMemory)) { Throw "MinimumMemory($MinimumMemory) should not be greater than MaximumMemory($MaximumMemory)" } # Check if Startup memory is greater than Maximummemory if($MaximumMemory -and $StartupMemory -and ($StartupMemory -gt $MaximumMemory)) { Throw "StartupMemory($StartupMemory) should not be greater than MaximumMemory($MaximumMemory)" } # Check if the generation matches the VhdPath extenstion if($Generation -and ($VhdPath.Split('.')[-1] -ne $Generation)) { Throw "Generation $geneartion should match virtual disk extension $($VhdPath.Split('.')[-1])" } # Check if $Path exist if($Path -and !(Test-Path -Path $Path)) { Throw "$Path does not exists" } #endregion $result = $false try { $vmObj = Get-VM -Name $Name -ErrorAction Stop if($Ensure -eq "Present") { if($vmObj.HardDrives.Path -notcontains $VhdPath){return $false} if($SwitchName -and ($vmObj.NetworkAdapters.SwitchName -notcontains $SwitchName)){return $false} if($state -and ($vmObj.State -ne $State)){return $false} if($StartupMemory -and ($vmObj.MemoryStartup -ne $StartupMemory)){return $false} if($MACAddress -and ($vmObj.NetWorkAdapters.MacAddress -notcontains $MACAddress)){return $false} if($ProcessorCount -and ($vmObj.ProcessorCount -ne $ProcessorCount)){return $false} if($MaximumMemory -and ($vmObj.MemoryMaximum -ne $MaximumMemory)){return $false} if($MinimumMemory -and ($vmObj.MemoryMinimum -ne $MinimumMemory)){return $false} return $true } else {return $false} } catch [System.Management.Automation.ActionPreferenceStopException] { ($Ensure -eq 'Absent') } } #region Helper function function Set-VMState { param ( [Parameter(Mandatory)] [String]$Name, [Parameter(Mandatory)] [ValidateSet("Running","Paused","Off")] [String]$State, [Boolean]$WaitForIP ) switch ($State) { 'Running' { $oldState = (Get-VM -Name $Name).State # If VM is in paused state, use resume-vm to make it running if($oldState -eq "Paused"){Resume-VM -Name $Name} # If VM is Off, use start-vm to make it running elseif ($oldState -eq "Off"){Start-VM -Name $Name} if($WaitForIP) { Get-VMIPAddress -Name $Name -Verbose } } 'Paused' {if($oldState -ne 'Off'){Suspend-VM -Name $Name}} 'Off' {Stop-VM -Name $Name -Force -WarningAction SilentlyContinue} } } function Change-VMProperty { param ( [Parameter(Mandatory)] [String]$Name, [Parameter(Mandatory)] [String]$VMCommand, [Parameter(Mandatory)] [Hashtable]$ChangeProperty, [Boolean]$WaitForIP, [Boolean]$RestartIfNeeded ) $vmObj = Get-VM -Name $Name $originalState = $vmObj.state if($originalState -ne "Off" -and $RestartIfNeeded) { Set-VMState -Name $Name -State Off &$VMCommand -Name $Name @ChangeProperty # Can not move a off VM to paused, but only to running state if($originalState -eq "Running") { Set-VMState -Name $Name -State Running -WaitForIP $WaitForIP } Write-Verbose -Message "VM $Name now has correct properties." # Cannot make a paused VM to go back to Paused state after turning Off if($originalState -eq "Paused") { Write-Warning -Message "VM $Name state will be OFF and not Paused" } } elseif($originalState -eq "Off") { &$VMCommand -Name $Name @ChangeProperty Write-Verbose -Message "VM $Name now has correct properties." } else { Write-Error -Message "Can not change properties for VM $Name in $($vmObj.State) state unless RestartIfNeeded is set to true" } } function Get-VMIPAddress { param ( [Parameter(Mandatory)] [string]$Name ) while((Get-VMNetworkAdapter -VMName $Name).ipaddresses.count -lt 2) { Write-Verbose -Message "Waiting for IP Address for VM $Name ..." -Verbose Start-Sleep -Seconds 3; } } #endregion Export-ModuleMember -Function *-TargetResource |