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Retrieve ESXi boot method + boot device

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lamw committed Jan 9, 2018
1 parent 9716722 commit 53559cbaed1008e0d800ee2fa27b31bb986251e7
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  1. +108 −0 powershell/ESXiBootDevice.ps1
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Function Get-ESXiBootDevice {
<#
.NOTES
===========================================================================
Created by: William Lam
Organization: VMware
Blog: www.virtuallyghetto.com
Twitter: @lamw
===========================================================================
.DESCRIPTION
This function identifies how an ESXi host was booted up along with its boot
device (if applicable). This supports both local installation to Auto Deploy as
well as Boot from SAN.
.PARAMETER VMHostname
The name of an individual ESXi host managed by vCenter Server
.EXAMPLE
Get-ESXiBootDevice
.EXAMPLE
Get-ESXiBootDevice -VMHostname esxi-01
#>
param(
[Parameter(Mandatory=$false)][String]$VMHostname
)

if($VMHostname) {
$vmhosts = Get-VMhost -Name $VMHostname
} else {
$vmhosts = Get-VMHost
}

$results = @()
foreach ($vmhost in ($vmhosts | Sort-Object -Property Name)) {
$esxcli = Get-EsxCli -V2 -VMHost $vmhost
$bootDetails = $esxcli.system.boot.device.get.Invoke()

# Check to see if ESXi booted over the network
$networkBoot = $false
if($bootDetails.BootNIC) {
$networkBoot = $true
$bootDevice = $bootDetails.BootNIC
} elseif ($bootDetails.StatelessBootNIC) {
$networkBoot = $true
$bootDevice = $bootDetails.StatelessBootNIC
}

# If ESXi booted over network, check to see if deployment
# is Stateless, Stateless w/Caching or Stateful
if($networkBoot) {
$option = $esxcli.system.settings.advanced.list.CreateArgs()
$option.option = "/UserVars/ImageCachedSystem"
try {
$optionValue = $esxcli.system.settings.advanced.list.Invoke($option)
} catch {
$bootType = "stateless"
}
$bootType = $optionValue.StringValue
}

# Loop through all storage devices to identify boot device
$devices = $esxcli.storage.core.device.list.Invoke()
$foundBootDevice = $false
foreach ($device in $devices) {
if($device.IsBootDevice -eq $true) {
$foundBootDevice = $true

if($device.IsLocal -eq $true -and $networkBoot -and $bootType -ne "stateful") {
$bootType = "stateless caching"
} elseif($device.IsLocal -eq $true -and $networkBoot -eq $false) {
$bootType = "local"
} elseif($device.IsLocal -eq $false -and $networkBoot -eq $false) {
$bootType = "remote"
}

$bootDevice = $device.Device
$bootModel = $device.Model
$bootVendor = $device.VEndor
$bootSize = $device.Size
$bootIsSAS = $device.IsSAS
$bootIsSSD = $device.IsSSD
$bootIsUSB = $device.IsUSB
}
}

# Pure Stateless (e.g. No USB or Disk for boot)
if($networkBoot-and $foundBootDevice -eq $false) {
$bootModel = "N/A"
$bootVendor = "N/A"
$bootSize = "N/A"
$bootIsSAS = "N/A"
$bootIsSSD = "N/A"
$bootIsUSB = "N/A"
}

$tmp = [pscustomobject] @{
Host = $vmhost.Name;
Device = $bootDevice;
BootType = $bootType;
Vendor = $bootVendor;
Model = $bootModel;
SizeMB = $bootSize;
IsSAS = $bootIsSAS;
IsSSD = $bootIsSSD;
IsUSB = $bootIsUSB;
}
$results+=$tmp
}
$results | FT -AutoSize
}

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