I found an article about Rename the guest OS to match the virtual machine name on Hyper-V to rename computer name to match the vm's name. The problem is this script has to attached on the virtual machine and it's going to be hard if I want to change it.
Is it possible to rename vm computer's name from the host machine?
Give this a try, you can run it on the host. Currently it just prints a message of the old and new vm name. I left two options (commented out) in the code to rename the machine. Keep in mind that the machines should be resolvable and preferably part of your domain (you might need to remove the domain extensions from the vm name).
Get-WmiObject -Namespace root\virtualization\v2 -Class Msvm_ComputerSystem | Where-Object {$_.ElementName -ne $env:COMPUTERNAME} | ForEach-Object {
$newName = $_.ElementName
$_.GetRelated('Msvm_KvpExchangeComponent').GuestIntrinsicExchangeItems | ForEach-Object {
if($_ -as [xml])
{
$GuestExchangeItemXml = ([XML]$_).SelectSingleNode("/INSTANCE/PROPERTY[#NAME='Name']/VALUE[child::text()='FullyQualifiedDomainName']")
if ($GuestExchangeItemXml -ne $null)
{
$vmName = $GuestExchangeItemXml.SelectSingleNode("/INSTANCE/PROPERTY[#NAME='Data']/VALUE/child::text()").Value -replace '\W','_'
$vmName = $vmName.Substring(0,[System.Math]::Min(15,$vmName.Length))
#(Get-WmiObject Win32_Computersystem -ComputerName $vmName).Rename($newName); shutdown -r -t 0
#Rename-Computer -ComputerName $vmName -NewName $newName -Restart -Force -WhatIf
Write-Host "Renaming $vmName to $newName"
}
}
}
}
Use the Rename-Computer cmdlet:
Rename-Computer -ComputerName OldServerName -NewName NewServerName -Restart -Force
Rename-Computer does not use Powershell remoting so it is possible to run even without remote commands being enabled. See the docs.
You can change the hostname in the guest if you're able to connect to the remote host over the network.
$oldname = 'foo'
$newname = 'bar'
(Get-WMIObject Win32_ComputerSystem -Computer $oldname).Rename($newname)
Restart-Computer $oldname
Here is the simple command execute it through power shell
(gwmi win32_computersystem).Rename("NewName"); shutdown -r -t 0
Here's a short one
Invoke-Command -VMName "vm name here" -ScriptBlock {
Rename-Computer -NewName "new name here"
}
Related
this is my code i want it to show a few services from my servers but it keeps showing all of them. i tried using -Name but power shell 7 keeps saying that doesn't exist please help
$offlineServices = (Invoke-Command -ComputerName $server.Name {Get-service [string]$server.Value | `
Where-Object{$_.status -eq 'Stopped'}} ).Name
Get-Service can be used directly against remote servers, like this:
Get-Service -Name $server.Value -ComputerName $server.Name |
Where-Object Status -eq 'Stopped'
If you want to stick with your original remoting technique, you need to use the using modifier:
$offlineServices = (Invoke-Command -ComputerName $server.Name -Script {Get-service $using:server.Value |
Where-Object Status -eq 'Stopped'}).Name
NOTE: you should also remove the backtick before Where-Object as it isn't needed and might cause you issue later when modifying/debugging the code.
I have a cluster of vSphere windows clients approximately 100 that I want to remotely automate windows updates on weekly. I have listed all the windows machine out in text file on my desktop. I have run the PSWindowsUpdate module on my local windows10 machine with command:
Install-Module -Name PSWindowsUpdate and then executed the below script successful for my local machine to run windows updates.
#Import-Module PSWindowsUpdate
#Remove-Item -Path C:\Scripts\status.tx
#Start-Transcript -Path C:\Scripts\status.txt
#$Updates = "Critical Updates", "Security Updates"
#Get-WUInstall -AcceptALL- Verbose -IgnoreReboot -Category $Updates
#Write-Host "Done"
#Stop-Transcript
#Start-Sleep -s 120
#Restart-Computer -Force -Confirm:$false
-- after pc restarts run as PS As Administrator
#Get-WindowsUpdate
However, I am not a expert at PowerShell so, I do not know what to additionally script to accomplish the task of remotely updating 100 or so windows clients in vSphere.
Any suggestion would be appreciated.
You can try with the invoke-command. You can create a server list from a DC:
$Servers = Get-ADObject -Filter * -Properties Name,OperatingSystem | Where-Object OperatingSystem -like '*Server*'
And use this list with a loop like this
ForEach($_ in $Servers)
{
Invoke-Command -ScriptBlock {Get-WUInstall -AcceptALL- Verbose -IgnoreReboot -Category $Updates } -ComputerName $_.Name -ErrorAction SilentlyContinue
}
I wrote a short script to uninstall a program on multiple computers (from a text doc of hostnames). The script is working as expected but is taking about 2-3 minutes per host. Is there a way to perform this on all the machines simultaneously?
Here's my script.
$computers = Get-Content C:\Computernames.txt
foreach($Computer in $computers){
Invoke-Command -ComputerName $Computer -ScriptBlock{
$application = Get-WmiObject -Class Win32_Product -Filter "Name LIKE '%Appname%'"
#uninstall the app if it exists
if($application){
$application.Uninstall()
Write-Output "Application uninstalled successfully.."
}
else{
Write-Output "Application not found.."
}
}
}
Can I do Invoke-Command -ComputerName $Computers and do all machines simultaneously to avoid looping through?
As suggested, using $Computers worked successfully. I was able to get rid of my loop and speed the script up tremendously.
Here's the updated script - thanks for letting me know it supports arrays.
#list of computers
$computers = Get-Content C:\Computernames.txt
Invoke-Command -ComputerName $computers -ScriptBlock{
$application = Get-WmiObject -Class Win32_Product -Filter "Name LIKE '%appname%'"
if($application){
$application.Uninstall()
Write-Output "Successful uninstall on $env:COMPUTERNAME "
}
else{
Write-Output "Application not found on $env:COMPUTERNAME"
}
}
The win32_product class is notoriously slow, because it verifies every msi whenever it's used. I assume appname is replaced with a specific name. You can use the little known get-package and uninstall-package in powershell 5.1, but only with msi providers:
get-package appname | uninstall-package
I try to make a PowerShell script to do the following:
I want to identify the antivirus running on my PC.
I use command to do that:
$AntiVirusProduct = Get-WmiObject -Namespace root\SecurityCenter2 -Class AntiVirusProduct
Write-Output $AntiVirusProduct.DisplayName
Here I get the antivirus name but, I don't know how to grep the antivirus name and put it to the next command.
The next command is:
Stop-Service -Force "$Antivirus Name"
Or if there is a better way to to this?
Edit
Get-WmiObject -Namespace root\SecurityCenter2 -Class AntiVirusProduct |
Select DisplayName
DisplayName
-----------
AVG Antivirus
Windows Defender
If your display name output is a list of service names you can remove the Windows Defender entry from the list with something like this:
$svc = $AntiVirusProduct.DisplayName |
Where-Object { $_ -notlike '*Windows Defender*' }
and then stop the service like this:
$svc | Stop-Service -Force
I was wondering if there is a way to find a registry value of a specific computer. The only way I could find is entering a pssession and then exiting.
$Computer = Read-Host "Enter the PC Name: "
$connection=test-connection -ComputerName $Computer -Quiet
if($connection -eq $True) {
Enter-PSSession $Computer
$TrendServer= Get-ItemProperty -Path Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\TrendMicro\PC-cillinNTCorp \CurrentVersion | Select Server
write-output $TrendServer
if($TrendServer -ne $null){
Exit-PSSession
}
} else{Write-Output "Computer is not available. Please check Lan Sweeper "}
If it is installed using Windows Installer, you can use WMI, though this class is known to be quite slow:
Get-CimInstance -Query "SELECT * FROM Win32_Product WHERE Name = 'TrendMicro'" `
-ComputerName $computer
Change the name from 'TrendMicro' to whatever it actually is (I don't have it installed to check), and for older versions of PowerShell, use Get-WmiObject instead of Get-CimInstance.
Get more information here: Working with Software Installations