Of course you can use host profile templates to check compliance of ESXi host configuration against baseline configuration. But there might be some ad-hoc times that you need to compare Advanced Settings of two ESXi hosts and probably export a report out of it.
The below piece of PowerCLI code would be helpful for that purpose.
The credit for this code goes to Frederic Martin, the author of the code.
.SYNOPSIS
This script will compare all advanced settings between 2 ESXi servers
.DESCRIPTION
The script will compare each of all advanced settings between a source and a destination ESXi server and will display the difference
.NOTES
Author : Frederic Martin - www.vmdude.fr
.LINK
http://www.vmdude.fr
.PARAMETER hostSourceName
Name of the host used for source compare
.PARAMETER hostDestinationName
Name of the host used for destination compare
.PARAMETER short
This switch allows you to bypass some advanced settings thanks to variable named $excludedSettings
.EXAMPLE
C:\foo> .\Compare-AdvancedSettings.ps1 -hostSourceName esx01.vmdude.fr -hostDestinationName esx02.vmdude.fr
Description
-----------
Display all differences between advanced settings from host esx01.vmdude.fr and host esx02.vmdude.fr
.EXAMPLE
C:\foo> .\Compare-AdvancedSettings.ps1 -hostSourceName esx01.vmdude.fr -hostDestinationName esx02.vmdude.fr -short
Description
-----------
Display differences (without those in $excludedSettings) between advanced settings from host esx01.vmdude.fr and host esx02.vmdude.fr
#>
param (
[Parameter(Mandatory=$True)]
[string]$hostSourceName,
[Parameter(Mandatory=$True)]
[string]$hostDestinationName,
[switch]$short
)
# Checking if source host exists
if (-Not ($hostSource = Get-VMHost $hostSourceName -ErrorAction SilentlyContinue)) {
Write-Host -ForegroundColor Red "There is no source host available with name" $hostSourceName
exit
}
# Checking if destination host exists
if (-Not ($hostDestination = Get-VMHost $hostDestinationName -ErrorAction SilentlyContinue)) {
Write-Host -ForegroundColor Red "There is no destination host available with name" $hostDestinationName
exit
}
$diffAdvancedSettings = @()
# Using hastable for easy and fast handle
$advancedSettingsSource = @{}
$advancedSettingsDestination = @{}
# You can filter unwanted advanced settings to be unchecked (regexp)
$excludedSettings = "ScratchConfig.CurrentScratchLocation|ScratchConfig.ConfiguredScratchLocation|Vpx.Vpxa.config.vpxa.|UserVars.ActiveDirectoryPreferredDomainControllers|Config.Defaults.cpuidMask|Mem.HostLocalSwapDir"
# Retrieving advanced settings
Get-AdvancedSetting -Entity $hostSource | %{$advancedSettingsSource.Add($_.Name,$_.Value)}
Get-AdvancedSetting -Entity $hostDestination | %{$advancedSettingsDestination.Add($_.Name,$_.Value)}
# Browsing advanced settings and check for mismatch
ForEach ($advancedSetting in $advancedSettingsSource.GetEnumerator()) {
if ( ($short -And $advancedSetting.Name -notmatch $excludedSettings -And $advancedSetting.Value -ne $advancedSettingsDestination[$advancedSetting.Name]) -Or (-Not $short -And $advancedSetting.Value -ne $advancedSettingsDestination[$advancedSetting.Name]) ) {
$line = "" | Select Settings, SourceValue, DestinationValue
$line.Settings = $advancedSetting.Name
$line.SourceValue = $advancedSetting.Value
$line.DestinationValue = $advancedSettingsDestination[$advancedSetting.Name]
$diffAdvancedSettings += $line
}
}
# Displaying results
$diffAdvancedSettings
