topic Re: Script to set disk ,CPU and Memory for an existing VMs in VMware PowerCLI Discussions

Script to set disk ,CPU and Memory for an existing VMs

Jocker-H — Fri, 10 Feb 2023 11:46:18 GMT

Hello VMWare Communities.

VMWare version : 7.x

I'm locking for a script to add or remove disk,memory and CPU on Multiples existing VMs at ones.

Note : Some of them the hot add feature is disabled and other is enabled.

Could you please help me

Thanks in advance.

Re: Script to set disk ,CPU and Memory for an existing VMs

LucD — Fri, 10 Feb 2023 12:12:24 GMT

That is a very broad question.
The New-Harddisk (for harddisks) and Set-VM (for CPU and memory) cmdlets should do the trick.
Note that if you want to enable the hot-add feature, the VM will need to power off/power on.

You will need to give more details.
Are the VMs that need changes in a list, a CSV perhaps?
Should the hot-add feature be enabled?

Re: Script to set disk ,CPU and Memory for an existing VMs

Jocker-H — Fri, 10 Feb 2023 12:58:51 GMT

Hello LucD,

Yes the VM are in a list CSV that contain the VM name and the new value to be changed.

Some of them the Hot add Feature is disabled.

So i'm looking for a script to change the VM parameters disk, memory,CPU if the Hot Add is enabled and if not return the list of the VM with disabled hot add option.

Every one how just started Learning Scripting could ask bad questions !

Thanks in advance

Re: Script to set disk ,CPU and Memory for an existing VMs

LucD — Fri, 10 Feb 2023 13:31:22 GMT

Try something like this.

The new Harddisk is always applied.

When the VM is powered off the CPU and Memory settings are always applied.
When the VM is powered on the hot-add and hot-remove settings are checked.
When a powered on VM doesn't have at least one of the required hot- settings it is exported to a CSV.

# CSV layout: Name, CPU, Memory, Disk # VM1, 2, 4096, 40 # VM2, 2, 4096, 40 $notEnabled = @() Import-Csv -Path .\vm.csv -UseCulture -PipelineVariable row | ForEach-Object -Process { $vm = Get-VM -Name $row.Name New-HardDisk -VM $vm -CapacityGB $row.Disk -Confirm:$false | Out-Null if($vm.PowerState -eq 'PoweredOn') { $cpuAdd = $cpuRemove = $memAdd = $true if($vm.CpuHotAddEnabled -and $row.CPU -gt $vm.NumCpu){ Set-VM -VM $vm -NumCpu $row.CPU -Confirm:$false | Out-Null } else{ $cpuAdd = $false } if($vm.CpuHotRemoveEnabled -and $row.CPU -lt $vm.NumCpu){ Set-VM -VM $vm -NumCpu $row.CPU -Confirm:$false | Out-Null } else{ $cpuRemove = $false } if($vm.MemoryHotAddEnabled -and $row.Memory -gt $vm.Memory){ Set-VM -VM $vm -MemoryGB $row.Memory -Confirm:$false | Out-Null } else{ $memAdd = $false } } else{ Set-VM -VM $vm -NumCpu $row.CPU -MemoryGB $row.Memory -Confirm:$false | Out-Null } if($cpuAdd,$cpuRemove,$memAdd -notcontains $false){ $notEnabled += New-Object -TypeName PSObject -Property ([ordered]@{ VM = $vm.Name PowerState = $vm.PowerState CpuAdd = $cpuAdd CpuRemove = $cpuRemove MemAdd = $memAdd }) } } $notEnabled | Export-Csv -Path .\notEnabled.csv -NoTypeInformation -UseCulture