Solved

Powershell logging from invoke-command

Posted on 2013-06-19
2
1,044 Views
Last Modified: 2013-06-21
I have a script that includes a function for logging. The function writes log to $msg variable then writes the message to the screen. i can redirect this output to a .txt file for logging.

I need to run the script to multiple servers using invoke-command and write the log output to a txt file on the computer running the script.

I am trying to figure out how to output $msg in the write-log function from the PSSession and return it so I can create a master log file for all the servers. Should I create and populate a custom object? Not sure how to do that and get the results back from the remote session.

Can this even be done?

Here is an example of the code I am using and what the log file output should look like:
$servers = 'Server1','Server2'
$logfile = 'c:\scripts\logs\Reg-DLL-log.txt'

foreach($server in $servers){
    invoke-command -cn $server -sb{
        Param($server)

        Function write-log{
            [cmdletbinding()]
            Param(
                [Parameter(ValueFromPipeline=$true,Mandatory=$true)] [ValidateNotNullOrEmpty()]
                [string] $Message,
                [Parameter()] [ValidateSet(“Error”, “Warn”, “Info”)]
                [string] $Level = “Info”,
                [Parameter()] [ValidateRange(1,30)]
                [Int16] $Indent = 0
            )
            $msg = "{0} {1}{2}:{3}" -f (Get-Date -Format "yyyy-MM-dd HH:mm:ss"), $Level.ToUpper(), (" " * $Indent), $Message
                #This is output to screen
                switch ($Level) {
                    'Error' { Write-Host ('{0}{1}' -f (" " * $Indent), $Message) -ForegroundColor 'Red'}
                    'Warn' { Write-Host ('{0}{1}' -f (" " * $Indent), $Message) -ForegroundColor 'Yellow'}
                    'Info' { Write-Host ('{0}{1}' -f (" " * $Indent), $Message) -ForegroundColor 'white'}
        }}

        write-log -message 'Begin DLL registration for $server' -level Info
        $RegFile = "cimwin32.dll"
        regsvr32 $RegFile /s
        write-log -message 'registered $RegFile' -level Info
        write-log -message 'End DLL registration for $server' -level Info

    } -ArgumentList $server
}

Open in new window


 Log output to Reg-DLL-log.txt should look like this:
2013-06-19 11:25:12 INFO:Begin DLL registration for Server1
2013-06-19 11:25:12 INFO:registered cimwin32.dll
2013-06-19 11:25:12 INFO:End DLL registration for Server1
2013-06-19 11:25:12 INFO:Begin DLL registration for Server2
2013-06-19 11:25:12 INFO:registered cimwin32.dll
2013-06-19 11:25:12 INFO:End DLL registration for Server2

Open in new window

0
Comment
Question by:greetrufus
2 Comments
 
LVL 40

Accepted Solution

by:
footech earned 500 total points
ID: 39260919
Write-Host only outputs to the console (or host), so you'd have a hard time getting anything to a log file using that.  You need commands that actually return objects.  You might try something like the following.
$out = foreach($server in $servers){
    invoke-command -cn $server -scriptblock {
        Param($server)

        "{0} :Begin DLL registration for {1}" -f (Get-Date -Format "yyyy-MM-dd HH:mm:ss"),$server
        $RegFile = "cimwin32.dll"
        regsvr32 $RegFile /s
        "{0} :Registered {1}" -f (Get-Date -Format "yyyy-MM-dd HH:mm:ss"),$RegFile
        "{0} :End DLL registration for {1}" -f (Get-Date -Format "yyyy-MM-dd HH:mm:ss"),$server

    } -ArgumentList $server
}
$out | Out-File $logfile

Open in new window

0
 

Author Comment

by:greetrufus
ID: 39265855
Works brilliantly.  Thanks!!!
0

Featured Post

Free eBook: Backup on AWS

Everything you need to know about backup and disaster recovery with AWS, for FREE!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Create and license users in Office 365 in bulk based on a CSV file. A step-by-step guide with PowerShell script examples.
A procedure for exporting installed hotfix details of remote computers using powershell
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question