Help with reboot script

PowerShell Help
1

I have a script that I am porting over to PS7 from version 5.1. If I run the commands in 5.1 the script works as expected but as soon as I put it into PS7, the script fails to run and will just hang. I am not sure what is keeping the script from running.

$ListOfServers | Foreach-Object -ThrottleLimit 25 -Parallel {
    function Get-TimeStamp {
        return "[{0:MM/dd/yy} {0:HH:mm:ss}]" -f (Get-Date)   
    }
    Add-Content -path $logfile "$(Get-Timestamp) Sending reboot command to $_"
    Restart-Computer -Force -ComputerName $_ -ErrorAction SilentlyContinue
    $NetLogon = "Stopped"
    start-sleep 15
    Do{
        Try{
            Start-Sleep -Seconds 5
            $NetLogon = Get-Service -Computername $_ | Where-Object {$_.ServiceName -eq "NetLogon"}
        }Catch{
        }
    } Until ($NetLogon.Status -eq "Running")
    
    Add-Content -path $logfile "$(Get-Timestamp) Server $_ has been rebooted"
}
2

Hanging with a loop defined in the script typically indicates it is stuck in the loop.

Have a look at Get-Service in PS7, it no longer supports -ComputerName

2 Likes
3

That sounds pretty unlikely since the parameter -Parallel for the cmdlet Forach-Object was introduced with PowerShell version 7.0. :smirk:

Your script looks a little convoluted to me. I’d like to keep things a little simpler and would recommend another approach …

Restart-Computer -ComputerName $ListOfServers -Wait -For **WinRM** -Timeout 300 -Force

If you need to check the reboot on the servers I’d query the servers for their LastBootUpTime afterwards.

Get-CimInstance -ComputerName $ListOfServers -ClassName CIM_OperatingSystem -Property LastBootUpTime
1 Like
5

Olaf

Thank you for your response. I understand your skepticism on my script working in 5.1 but the for-each wrapper is different when I run it in 5.1. The stuff inside the For-Each is identical in my 5.1 script. I would like to make it less convoluted and easier for someone to read. I do have a question for you though.

In your one line script, the -wait -for WinRM, does it require that I enter something for the WinRM or is it looking for the WinRM services to start up before it continues on to the next server? I realize the way I have it written it will target the first 25 servers in my $ListOfServers variable and this is what I want as I am trying to use the script to reboot over 200 servers.

6

… since I couldn’t explain it better than the documentation … :man_shrugging:t3: …

The cmdlet Restart-Computer would more or less restart all provided computers at once. If you need to throttle this you’d need to do that “outside” of the command.

7

Olaf,

As always, thank you for your time and expertise.

8

Last question on this, at the ** needed or can they be dropped?

9

What does the doucmentation say about this? :wink: :wink: