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Setting Guest IP Addresses From The Host

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Last week at TechEd I had several people ask about how they can set the IP address of a guest from the host.  We've had this functionality in Hyper-V since Windows Server 2012, it was largely introduced for Hyper-V replication (to allow you to set a different IP address on failover).  But with a few lines of WMI you can take advantage of this functionality as well.  Here's how.

 

$vmName = "Demo"

#Get an instance of the management service, the Msvm Computer System and setting data
$Msvm_VirtualSystemManagementService = Get-WmiObject -Namespace root\virtualization\v2 -Class Msvm_VirtualSystemManagementService
$Msvm_ComputerSystem = Get-WmiObject -Namespace root\virtualization\v2 -Class Msvm_ComputerSystem -Filter "ElementName='$vmName'"
$Msvm_VirtualSystemSettingData = $Msvm_ComputerSystem.GetRelated(
    "Msvm_VirtualSystemSettingData",
    "Msvm_SettingsDefineState",
    $null,
    $null,
    "SettingData",
    "ManagedElement",
    $false,
    $null)

#Get an instance of the port setting data object and the related guest network configuration object
$Msvm_SyntheticEthernetPortSettingData = $Msvm_VirtualSystemSettingData.GetRelated("Msvm_SyntheticEthernetPortSettingData")
$Msvm_GuestNetworkAdapterConfigurations = $Msvm_SyntheticEthernetPortSettingData.GetRelated(
    "Msvm_GuestNetworkAdapterConfiguration",
    "Msvm_SettingDataComponent",
    $null,
    $null,
    "PartComponent",
    "GroupComponent",
    $false,
    $null)
$Msvm_GuestNetworkAdapterConfiguration = ($Msvm_GuestNetworkAdapterConfigurations | % {$_})

#Set the IP address and related information
$Msvm_GuestNetworkAdapterConfiguration.DHCPEnabled = $false
$Msvm_GuestNetworkAdapterConfiguration.IPAddresses = @("192.168.0.10")
$Msvm_GuestNetworkAdapterConfiguration.Subnets = @("255.255.255.0")
$Msvm_GuestNetworkAdapterConfiguration.DefaultGateways = @("192.168.0.1")
$Msvm_GuestNetworkAdapterConfiguration.DNSServers = @("192.168.0.2", "192.168.0.3")

#Set the IP address
$Msvm_VirtualSystemManagementService.SetGuestNetworkAdapterConfiguration(
    $Msvm_ComputerSystem.Path,
    $Msvm_GuestNetworkAdapterConfiguration[0].GetText(1))

Set-GuestNetworkIP.ps1

Comments

  • Anonymous
    May 21, 2015
    Hi, I've been testing this script with some Linux Boxes, and I've seen that it also adds some extra fields like PEERDNS=yes,  IPV6INIT=yes  and others on ifcfg-eth0. Does it possible  set different value for these extra settings ? Regards