Windows Servers Uptime Report using PowerShell

Question

Windows Servers Uptime Report using PowerShell

M. Sheeraz Ansari 136

Hi Folks,

A customer has mix of Windows servers (2012, 2016, 2019) on-premises environment. Customer needs to generate a report via PowerShell about the availability of servers. During my search I found a script on this link

and its modified version is attached.

270634-get-serveruptime.txt

Please note, this script reads windows events and based on that produces result. There is a problem where I need help, this script doesn't run against list of servers via a CSV file or a text file and we suspect it is not producing correct result.

Can somebody please review this script and help us with the right syntax or what is missing here?

Thanks in advance.

3 answers

Your answer

Answer 1

this script doesn't run against list of servers via a CSV file or a text file and we suspect it is not producing correct result.

What error do you get? What output do you get and what is wrong with it? Did you follow the examples that are documented in the script?

    .EXAMPLE  
        PS C:\> Get-ADComputer -Filter "OperatingSystem -Like '*Windows Server*' -and Enabled -eq 'True'" | Export-Csv $env:USERPROFILE\desktop\serverlist.csv -NoTypeInformation  
        PS C:\> $CsvList = "$env:USERPROFILE\desktop\serverlist.csv"  
        PS C:\> $CsvList.Name | Get-ServerUptime -ShowProgress -Raw  
        Retrieving shutdown and startup events all systems in AD export to list (Progress of each server will display)...  
        WARNING: This could take several minutes!  
  
    .EXAMPLE  
        PS C:\> 'LAB-DC3','LAB-DC2','LAB-OFFCA','LAB-WAP','LAB-NDES' | Get-ServerUptime -Verbose | Format-Table  
        Retrieving shutdown and startup events all listed systems in verbose data and formatted as a table...  
        WARNING: This could take several minutes!

M. Sheeraz Ansari 136 Reputation points

2022-12-14T16:51:34.053+00:00

Hi MotoX80,

Thanks for your reply. I tried as per examples in the script, it works for a single local host and for multiple hosts, when define multiple hosts manually in command execution. Secondly, we couldn't run it against list of servers (by providing a file location).

Below is the output for single host (which is ok).

Below is the output for multiple servers but it is not producing correct result as we reviewed the servers logs from windows events manually.

Answer 2

Rich Matheisen 47,901

I think your problem is found on line #171 of the script. The comment says "# Remotely retrieve the events . . ." but the Invoke-Command runs only on the local machine because there's no "-ComputerName" or "-Session" parameter.

There is a comment above that that says "# Create a new PSSession to be used throughout the script" but there's no code to create the session. Did you modify this section of the script???

M. Sheeraz Ansari 136 Reputation points

2022-12-14T16:55:02.34+00:00

Hi RichMatheisen-8856,

I didn't modify it and this is where I need help... meaning,

1 ) How it can be executed against list of servers using a CSV or txt file?

2) Produce correct result by reading against the name of each host from Windows event?

Thanks.
MotoX80 36,291 Reputation points

2022-12-14T18:16:37.753+00:00

There are 2 invoke-command calls, line 171 and 228. They are both missing the computer name. Add that after "invoke-command".

Invoke-Command -ComputerName $name
M. Sheeraz Ansari 136 Reputation points

2022-12-15T13:29:38.717+00:00

Thanks for support folks.

@MotoX80 and @Rich Matheisen , I made changes as per your suggestions. Attached is script for you to validate, if I made correct changes.271073-get-serveruptimev20.txt

Well, before making changes to the script below is the output - when I executed the script on a local host.

After making changes to the script below is the output - when I executed the script on a local host. There is change in output, result is not correct and some errors in execution.

Finally, I was able to execute it against the list of servers and got below output, which is also not correct.

Any other thoughts please? Thanks.
MotoX80 36,291 Reputation points

2022-12-15T14:09:07.527+00:00
If you need to support Powershell code, then you should learn the language.

https://www.sapien.com/books_training/Windows-PowerShell-4

The "$" character indicates a variable, the "-" character indicates a parameter.

You have this.

$tempevent = Invoke-Command $ComputerName $name

"ComputerName" needs to be a parameter name, not a variable name.

$tempevent = Invoke-Command -ComputerName $name

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/invoke-command?view=powershell-7.3

Answer 3

Rich Matheisen 47,901

After correcting the two Invoke-Command cmdlets, run the script like this: .\ScriptName.ps1 -CsvList filepath to use a CSV file with the machine names in the "Name" column of the CSV file.

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Windows Servers Uptime Report using PowerShell

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