execute remote powershell script on remote server

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1 year, 11 months ago.

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  • #66640

    Points: 0
    Rank: Member

    I have looked for weeks, and had others research with/for me, but I haven't found the answer to this.

    I have a script that lives on server 1, and needs to be executed on server 1 using certain credentials. The ultimate solution will help with decrypting files. The script must execute as a certain user on a certain server because the key pair is in the user's key ring on that server.

    I want the script to be called from server 2 as part of a larger process. Server 2 has a sql job which has the following flow:

    1. Step 1 of the job uses a powershell script to download the file
    2. Step 2 of the job needs to execute the script on server 1 to decrypt the file (** this is the step I am talking about here)
    3. Step 3 of the job will run a powershell script to check the file attributes (last written date, file size as compared to yesterday, etc)
    4. Step 4 of the job will restore the log file

    The script on server 1 runs locally without any issues, and produces the expected results. When attempting to have server 2 execute the script on server 1, I haven't had any success. In order to get as simple as possible for finding out what is actually not working, I came up with a set of scripts which are simple (see below).

    • When I run script 1 on server 1 (where the file physically lives), it works fine. The text file is produced with "hello world" in the file.
    • When I run script 2 on server 2 (I didn't save a file, just ran it in the ISE window), it runs without errors or warnings, but the file that should be written doesn't exist on server 1 (nor on server 2 – not that it should but I checked to see anyway).
    • I am not a powershell guru of any kind – so I apologize now if it is a very obvious thing. 🙂

      # script 1
      # this script lives on server 1
      # file name: c:\deleteme\helloworld2.ps1
      $CMD = Invoke-Expression " `"hello world`" >> C:\deleteme\helloworld.txt"
      Invoke-Command -ScriptBlock { $CMD }
      # script 2
      # this script is executed on server 2 and attempts to execute the script on server 1
      $session = New-PSSession -ComputerName "SERVER01.lahcg.com" #-Credential $username
      $CMD = "Invoke-Command -ScriptBlock { powershell.exe `"C:\deleteme\helloworld2.ps1`" } "
      #write-output $CMD
      Invoke-Command -Session $session -ScriptBlock { $CMD }
      Remove-PSSession $session

      Environment Info:

    • Server 1: Windows Server 2008 R2 Standard with Powershell 2
    • Server 2: Windows Server 2012 R2 Datacenter with Powershell 4

    Extra Notes:

    • I do have the enable remote set ok... I found that earlier when researching.
    • I am using different versions of Powershell , but since the script on server 1 is running ok locally, I didn't think that was a problem.
    • I have gotten the credential part to work on another script – so I am not asking about that in this post. I left it in the script, commented out for reference.
  • #66646

    Points: 1
    Rank: Member

    There shouldn't be a need to call powershell.exe or do this nested Invoke-Command thing. Try running it like this:

    Invoke-Command -Session $Session -ScriptBlock { & "C:\deleteme\helloworld2.ps1" }
    • #66684

      Points: 0
      Rank: Member

      That requires the script to live locally, doesn't it? Server 2 starts the process, then calls out to server 1 to run the script that lives on server 1.

  • #66711

    Points: 1
    Rank: Member

    If you run this from SERVER2:

    Invoke-Command -Session $Session -ScriptBlock { & "C:\deleteme\helloworld2.ps1" }

    This will be executed on SERVER1 (provided that's where the $Session variable points):

    & "C:\deleteme\helloworld2.ps1"

    In this case, the helloworld2.ps1 script would have to live in C:\deleteme on SERVER1.

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