Error “Cannot unregister the machine” on Jenkins, ‘kitchen test’ command

2017/04/06

Ok, it’s a hack… so don’t use it unless you need it, and on your own risk.
For some reason, although the Windows vagrant box is updated using Matt Wrock’s packer templates from here https://github.com/mwrock/packer-templates, and everything goes well, and also on the first manual kitchen test on the Jenkins server everything goes ok, when run from Jenkin’s pipeline mechanism, the box is not destroyed.
Three VirtualBox processes remain hanged in the system.
It’s not a clean solution, but having this error over and over again:

STDERR: There was an error while executing `VBoxManage`, a CLI used by Vagrant for controlling VirtualBox. The command and stderr is shown below.
Command: [“unregistervm”, “some GUID here”, “–delete”]
Stderr: VBoxManage.exe: error: Cannot unregister the machine ‘kitchen-your_cookbook-default-windows2012r2_default_some_numbers’ while it is locked
VBoxManage.exe: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), component MachineWrap, interface IMachine, callee IUnknown

it’s really annoying, so until the final solution will reveal itself, this might also be a way:

$cookbook = ‘your_cookbook_name’
gwmi -Query “select * from win32_process where name = ‘virtualbox.exe'” | `
? { $_.CommandLine.Contains(“kitchen-$cookbook”)} | `
Select CommandLine, Handle | `
% { Get-Process -Id $_.Handle } | `
Stop-Process -Force -ErrorAction Continue

You’ll need to execute it from Groovy with the bat command, something like

bat “powershell -File \”../killVBoxes.ps1\” ${cookbookName}”

For the path of the PowerShell script you’ll need to provide the correct path.

Note: Be aware that when copy-pasting, the quotes and possibly other characters get messed up by WordPress, you’ll have to replace them.


Download OReilly free books with PowerShell through PasteBin

2017/01/10
[CmdletBinding()]
param(
    [Parameter(Mandatory=$true)] [string]$DestinationFolder,
    [Parameter(Mandatory=$false)] [string]$OReillyPasteBinRawUrl = ‘http://pastebin.com/raw/nyFtp2EG‘,
    [Parameter(Mandatory=$false)] [bool]$SimulateSleepBetweenDownloads = $true
)

Import-Module BitsTransfer

function Download-File
{
    param([string] $UrlSource, [string] $Destination)
    $random = Get-Random -Minimum 1 -Maximum 5
    Write-Output “Downloading $filename”
    Start-BitsTransfer -Source $UrlSource -Destination $Destination
    if ($SimulateSleepBetweenDownloads) {
        Write-Output ”    Sleeping $(4 + $random) seconds”
        Start-Sleep -s (4 + $random)
    }
}

$tmpFile = New-TemporaryFile
Set-Content -Path ($tmpFile.FullName) -Value ((Invoke-WebRequest -Uri $OReillyPasteBinRawUrl).Content)

$reader = [System.IO.File]::OpenText($tmpFile.FullName)
while($null -ne ($url = $reader.ReadLine())) {
    $filename = $URL.Substring($URL.LastIndexOf(“/”) + 1)
    $destPath = (Join-Path $DestinationFolder $filename)
    if (!(Test-Path $destPath)) {
        Download-File -UrlSource $url -Destination $destPath
    }
    else {
        if ((Get-Item $destPath).Length -le 0) {
            Download-File -UrlSource $url -Destination $destPath
        }
        else {
            Write-Output “Skipping $filename ; already downloaded”
        }
    }
}

After that, use the script like that:

.\downloadOreallyBooks.ps1 -DestinationFolder E:\temp\ -SimulateSleepBetweenDownloads $false

Note 1: Credits go to StackOverflow, IT blogs and alike, sites that helped me with the code when searching for solutions.
Note 2: Be aware that when copy-pasting, the quotes and possibly other characters get messed up by WordPress, you’ll have to replace them.


Stub Chef guard_interpreter for ChefSpec test

2016/12/20

If you have a Chef cookbook with a resource containing a “guardian”, like, let’s say a PowerShell guard interpreter, you must stub the content of the Chef guard.
Here is an example of the resource using the guardian:

file “some_log_path” do
  guard_interpreter :powershell_script
  action :delete
  not_if “(ls -Dir ‘C:\temp’).Name.Contains(‘build’)”
end

Here’s how you have to construct your ChefSpec file:

describe ‘my_cookbook::my_recipe’ do
  let(:chef_run) do
    ChefSpec::ServerRunner.new do |node, server|
      stub_chef_server(node, server)
    end.converge(described_recipe)
  end

  before do
    stub_command(“(ls -Dir ‘C:\temp’).Name.Contains(‘build’)”).and_return(false)
  end

  it ‘does not raise an exception’ do
    expect { chef_run }.to_not raise_error
  end

  it ‘deletes the existing log file’ do
    expect(chef_run).to delete_file(‘C:\temp\releases\some_build\log.txt’)
  end
end


Verify if a Chocolatey package is installed

2016/12/19
(choco list –lo | % { $_ -match “winmerge” }).contains($true)
(choco list –lo | % { $_ -match “sdfsdfds” }).contains($true)

Ping website with port using PowerShell

2016/12/07

Update
Thanks, jrlops ! There’s an embedded PowerShell way for doing this:

Test-NetConnection http:/mywebsite.mydomain -Port 1234

Using .Net object:

(New-Object System.Net.Sockets.TcpClient).Connect( `http://mywebsite.mydomain` , 1234 )

Useful PowerShell profile code

2016/07/22

To check the location for your Powershell profile file, type $profile .
To reload your PowerShell profile, use & $profile .

Edit your PowerShell profile to set custom colors and console size as follow:

$host.UI.RawUI.BackgroundColor = ‘Gray’
$host.UI.RawUI.ForegroundColor = ‘Black’

$pshost = get-host
$pswindow = $pshost.ui.rawui

$newsize = $pswindow.buffersize
$newsize.height = 9000
$newsize.width = 140
$pswindow.buffersize = $newsize

$newsize = $pswindow.windowsize
$newsize.height = 65
$newsize.width = 140
$pswindow.windowsize = $newsize

# You’ll need a HOME variable defined as environment variable
cd $env:HOME

Clear-Host

Note 1: Credits go to StackOverflow, IT blogs and alike, sites that helped me with the code when searching for solutions.
Note 2: Be aware that when copy-pasting, the quotes and possibly other characters get messed up by WordPress, you’ll have to replace them.


PowerShell function for registry value test

2016/07/20

Below is a useful function for checking the existence and the value of a registry key.
Might need some rework, it’s not in a final version

function Test-RegistryValue
{
  param(
    [Parameter(Mandatory=$true)] [string]$Path,
    [Parameter(Mandatory=$true)] [string]$Name,
    [Parameter(Mandatory=$false)] $KeyValue
  )

  if( -not (Test-Path -Path $Path -PathType Container) ) {
    return $false
  }

  $properties = Get-ItemProperty -Path $Path
  if( -not $properties ) {
    return $false
  }
  else {
    $value = ($properties | Select-Object -ExpandProperty $Name)
    if ($value.ToString().ToLower() -eq $KeyValue.ToString().ToLower()) {
      return $true
    }
    else {
      return $false
    }
  }

  $member = Get-Member -InputObject $properties -Name $Name
  if( $member ) {
    return $true
  }
  else {
    return $false
  }
}

Note: Credits go to StackOverflow, IT blogs and alike, sites that helped me with the code when searching for solutions.


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