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Davidw
Asked: 2018-11-30 13:35:39 +0800 CST

Invoke-Command fails to create new VMs

  • 772

I created this script to create multiple VM's remotely on the Hyper-V server, however, it doesn't seem to create the VM's. I can create one directly on the Hyper-V server using the given parameters while using Enter-PSSession, but not via invoke-command? (there are no error messages, it just prints a blank line and goes back to the prompt)

[CmdletBinding()]
param(
[Parameter(Mandatory=$true)][int]$newvmcount #require number of temp vm's to create
)
Invoke-Command -ScriptBlock {foreach ($vmnumber in $newvmcount){New-VM -Name "Windows10TMP$vmnumber" -BootDevice NetworkAdapter -Generation 2 -SwitchName LAN -MemoryStartupBytes 1gb -NewVHDPath "F:\hypervvirtualmachines\Windows10TMP$vmnumber.vhdx" -NewVHDSizeBytes 127gb -verbose}} -ComputerName hypervserver -ArgumentList $newvmcount
powershell

2 Answers

  1. Best Answer

    You can apply the $using scope modifier. It would look like this$using:newvmcount which let's you use the variable defined outside of the invoke-command

    • 3

  2. Apply How to pass arguments for remote commands:

    Either declare the parameter(s) at the beginning of your scriptblock:

    Invoke-Command -ScriptBlock {
  param($newvmcount)
  foreach ($vmnumber in $newvmcount) {
      New-VM -Name "Windows10TMP$vmnumber" `
        -BootDevice NetworkAdapter -Generation 2 `
        -SwitchName LAN -MemoryStartupBytes 1gb `
        -NewVHDPath "F:\hypervvirtualmachines\Windows10TMP$vmnumber.vhdx" `
        -NewVHDSizeBytes 127gb -verbose
  }
} -ComputerName hypervserver -ArgumentList $newvmcount

    or access argument(s) using the automatic variable $args.

    BTW, I can't understand the foreach loop as [int]$newvmcount does not seem to be a collection…

    • 2