Query ESXi Hosts Serial Numbers

I was asked by our IT department to provide serial numbers of our lab servers. Fortunately this can be done remotely with esxcfg-info CLI command and can be automated with William Lam (@lamw) PowerCLI function Get-Esxcfginfo. I just had to find the right entry in the xml file returned by the function.

Here is the script I used:

.SYNOPSIS Remoting collecting esxcfg-info from an ESXi host using vCenter Server
.NOTES Author: William Lam
.NOTES Site: www.virtuallyghetto.com
.NOTES Reference: http://www.virtuallyghetto.com/2016/06/using-the-vsphere-api-to-remotely-collect-esxi-esxcfg-info.html
 ESXi host
 PS> Get-VMHost -Name "esxi-1" | Get-Esxcfginfo

Function Get-Esxcfginfo {

 $sessionManager = Get-View ($global:DefaultVIServer.ExtensionData.Content.sessionManager)

 # URL to the ESXi esxcfg-info info
 $url = "https://" + $vmhost.Name + "/cgi-bin/esxcfg-info.cgi?xml"

 $spec = New-Object VMware.Vim.SessionManagerHttpServiceRequestSpec
 $spec.Method = "httpGet"
 $spec.Url = $url
 $ticket = $sessionManager.AcquireGenericServiceTicket($spec)

 # Append the cookie generated from VC
 $websession = New-Object Microsoft.PowerShell.Commands.WebRequestSession
 $cookie = New-Object System.Net.Cookie
 $cookie.Name = "vmware_cgi_ticket"
 $cookie.Value = $ticket.id
 $cookie.Domain = $vmhost.name

 # Retrieve file
 $result = Invoke-WebRequest -Uri $url -WebSession $websession -ContentType "application/xml"
 # cast output as an XML object
 return [ xml]$result.content

Connect-VIServer -Server xxx.gcp.local -User administrator@vsphere.local -password VMware1! | Out-Null

$hosts = Get-VMHost

foreach ($ESXhost in $hosts)
$xmlResult = $ESXhost | Get-Esxcfginfo
Write-Host $ESXhost.name ($xmlResult.host.'hardware-info'.value[3].'#text')

Disconnect-VIServer * -Confirm:$false


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