POSTS

Validating VM advanced settings

March 20, 2009

Now that we have covered how to make advanced settings changes we need to validate that the settings have been applied. Assuming that a script or command worked is never as good as checking it. Below is a script to do just that.

The script lists all statuses so if you only want to see issues you can pipe the output into the Where-Object cmdlet like so:

<vmObject(s)> | .\Validate-VmAdvancedSettings.ps1 | Where-Object {$_.Status -ne "Ok"}

The script:

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# Usage: &lt;vmobject> | .\Validate-VmAdvancedSettings.ps1
# Examples: Get-VM myTestVM | .\Validate-VmAdvancedSettings.ps1
#           Get-Cluster myCluster | Get-VM | .\Validate-VmAdvancedSettings.ps1

BEGIN
{
    # The settings as an array of arrays.  ("key", "value)
    $advancedSettings = @( ("isolation.tools.copy.disable", "true"),
                           ("isolation.tools.paste.disable", "true"),
                           ("isolation.tools.setGUIOptions.enable", "false"),
                           ("log.rotateSize", "100000"),
                           ("log.keepOld", "10"),
                           ("isolation.tools.connectable.disable", "true"),
                           ("isolation.device.connectable.disable", "true"),
                           ("isolation.tools.diskWiper.disable", "true"),
                           ("isolation.tools.diskShrink.disable", "true")
                         )
    $keyIndex = 0
    $valueIndex = 1
}

PROCESS
{                      
    $vmView = Get-View $_.Id
    
    # Get the existing settings in an easy lookup format.
    $vmSettings = @{}
    foreach ($item in $vmView.Config.ExtraConfig)
    {
        $vmSettings[$item.Key] = $item.Value
    }
  
    # Validate each of the advanced settings.
    foreach ($setting in $advancedSettings)
    {
        $status = $null
        if (!$vmSettings.ContainsKey($setting[$keyIndex]))
        {
            $status = "Missing"
        }
        elseif ($vmSettings[$setting[$keyIndex]] -ne $setting[$valueIndex])
        {
            $status = "Misconfigured"
        }
        else
        {
            $status = "Ok"
        }
        
        $vmView | Select-Object Name, 
                                @{Name="Setting"; Expression={$setting[$keyIndex]}},
                                @{Name="Status"; Expression={$status}}
    }
}