PowerCLI: nSeries Guest OS Timeout Scripts

Tags

administration, esx, ibm nseries, powercli, vmware

First post in months. Hopefully I’ll have more to post on in the next few weeks. Onto more pressing issues…

“The N Series VMware ESX Host Utilities” have a couple of ISOs that have scripts for tweaking the guest OS disk timeouts.

From the IBM Redbook IBM System Storage N series and VMware vSphere Storage Best Practices:

This is a job for PowerCLI. Inspired from Jase’s script.

Considerations for Linux: Use an account that can do passwordless sudo (or root- you don’t have to have root SSH enabled for Invoke-VMscript).

# Requires VMware Tools to be installed on each guest.
$winisoName = "[datastore] path/to/windows_gos_timeout.iso"
$linisoName = "[datastore] path/to/linux_gos_timeout.iso"
# Get Windows Guest Credentials
Write-Host "Enter Windows Credentials"
$wincred = Get-Credential
# Get Linux Guest Credentials
Write-Host "Enter Linux Credentials"
$lincred = Get-Credential
# Get ESX Host Creds
Write-Host "Enter ESX  Credentials"
$esxcred = Get-Credential
# Get ALL VMs
$vms = Get-VM
foreach($vms as $vm){
	$driveName = "CD/DVD Drive 1"
	$vm = $vm | Get-View
	$dev = $vm.Config.Hardware.Device | where {$_.DeviceInfo.Label -eq $driveName}

	$spec = New-Object VMware.Vim.VirtualMachineConfigSpec
	$spec.deviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec[] (1)
	$spec.deviceChange[0] = New-Object VMware.Vim.VirtualDeviceConfigSpec
	$spec.deviceChange[0].operation = "edit"
	$spec.deviceChange[0].device = $dev
	$spec.deviceChange[0].device.backing = New-Object VMware.Vim.VirtualCdromIsoBackingInfo
	$spec.deviceChange[0].device.backing.fileName = $isoName

	$vm.ReconfigVM_Task($spec)

	$winscript = "regedit /s windows_gos_timeout.reg"
	$linscript = "sudo /media/cdrom/linux_gos_timeout-install.sh"

	if($vm.Guest.OSFullName -match "Microsoft") {
			Invoke-VMScript -HostCredentials $esxcred -GuestCredentials -ScriptText $winscript
	}
	else if($vm.Guest.OSFullName -match "Linux") {
			Invoke-VMScript -HostCredentials $esxcred -GuestCredentials -ScriptText $linscript
	}
}

Back to work.

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