The other night I had a task of upgrading 22 VMs with additional vCPUs and memory. I also had a maintenance window of 60 minutes to get this completed. So I wasn’t going to do this more than once, so I just wrote a simple PowerCli script that would handle this process for me.
$servers = "VMServer01","VMServer02","VMServer03","VMServer04","VMServer05"
foreach ($server in $servers){
Shutdown-VMGuest $server -confirm:$false
Do {
sleep -Seconds 5
$Status = (Get-vm $server).powerstate
If($status -eq "PoweredOff")
{"$Server has been powered off adding hardware"}
else{
"$server is still powered on looping until off"
}
}
While ($Status -eq "PoweredOn")
$TotalvCPU=6
$Cores=1
$VMname = get-vm $server
$spec=New-Object –Type VMware.Vim.VirtualMAchineConfigSpec –Property @{“NumCoresPerSocket” = $cores}
($VMname).ExtensionData.ReconfigVM_Task($spec)
$VMname | Set-VM -MemoryGB 28 -NumCpu $TotalvCPU -Confirm:$false
Sleep -Seconds 5
Start-VM $server -Confirm:$false
}
So this script starts off identifying the servers that the work is going to be performed on.… Continue reading