PowerShell: Hyper-V Management

Migrate Live Virtual Machines (In Clustered Environment):

# Connect to Hyper-V Host
$remoteHost="HYPERV01"
Enter-PsSession $remoteHost

# Move all VMs to another Hyper-V Host in a Clustered Environment

# Set Variables
$AllHyperVHosts={(Get-ClusterNode | Where { $_.State –eq "Up" }).Name | %{$_.ToLower()}}.Invoke() # Cast result as Array type
$otherHyperVHosts=$AllHyperVHosts -ne "$(($env:computername).ToLower())" # Operate on array
$allRunningVMs=Get-VM | Where { $_.State –eq "Running" } | select Name,Path

function selectHyperVHost{
$i=0
$otherHyperVHosts | %{"$i`. $_";$i++;}
do {
$hostIndex=Read-Host -Prompt 'Select the index number corresponding to target host name'
$GLOBAL:selectedHost=$otherHyperVHosts[$hostIndex]
} until ($hostIndex -lt $otherHyperVHosts.length)
}

# Recurse into array of VM names, move each vm to the other host
selectHyperVHost
$allRunningVMs | %{Move-ClusterVirtualMachineRole -Name $_.Name -Node $selectedHost}

# Drain role of this node
Suspend-ClusterNode -Name $env:computername -Target $selectedHost -Drain

# Resume roles of this suspended node
Resume-ClusterNode $env:computername

# Resume roles of all suspended nodes
Get-ClusterNode | Resume-ClusterNode -Failback Immediate

Sample Output

PS C:\Windows\system32> $allRunningVMs | %{Move-ClusterVirtualMachineRole -Name $_.Name -Node $selectedHost}

Name                                    OwnerNode                               State
----                                    ---------                               -----
Berlin Aruba ClearPass Policy Manag... hv01                                Online
Berlin DFS Namespace Server 01         hv01                                Online
Berlin DHCP Core                       hv01                                Online
Berlin Domain Controller 01            hv01                                Online
Berlin Domain Controller 02            hv01                                Online
Berlin Exchange 02                     hv01                                Online
Berlin File Server 01                  hv01                                Online
Berlin Management Server               hv01                                Online
MoscowIT Certificate Authority 01      hv01                                Online

Reference commands:

# List Running VMs
Get-VM | Where { $_.State –eq "Running" }

Name State CPUUsage(%) MemoryAssigned(M) Uptime Status
---- ----- ----------- ----------------- ------ ------
Exchange 01 Running 1 32768 158.00:10:24 Operating normally
ADFS Running 0 4096 1.09:56:41 Operating normally

# Force shutdown of all running VMs
$allRunningVMs=(Get-VM | Where { $_.State –eq "Running" }).Name
$allRunningVMs | %{Stop-VM -Name $_ -Force}

# Move 1 VM to another Host
$otherHyperVHost="HYPERV02"
$destinationStoragePath="C:\ClusterStorage"
$vmToMove="SOMEVM"

# Unclustered VM move
Move-VM $vmToMove $otherHyperVHost-IncludeStorage -DestinationStoragePath "$destinationStoragePath`\$($vmToMove -replace '\s','')"

# Live migration
Move-ClusterVirtualMachineRole -Name $vmToMove -Node $otherHyperVHost

# Offline resource migration
Move-ClusterGroup -Name $vmToMove -Node $otherHyperVHost

# Move all VMs to another Hyper-V Host in an Unclustered Environment
$otherHyperVHost="HYPERV02"
$destinationStoragePath="C:\ClusterStorage"
$allVMs=(Get-VM).Name

# Recurse into array of VM names, move each vm to the other host with storage destination paths using labels of each VM (spaces removed)
$allVMs  |%{Move-VM $_ $otherHyperVHost-IncludeStorage -DestinationStoragePath "$destinationStoragePath`\$($_ -replace '\s','')"}