Logging Invoke-Command

Question

Hello,
I have a problem with logging on multiple servers at the same time. I would like to have a single file with every log formated like this :
"yyyyMMdd HH:mm:ss - $Env:ComputerName - result of the command"
To know what computer is doing what, I am currently logging in separate files on each server running the following code :
$ExecDate = Get-Date -Format yyyy-MM-dd_HH-mm
$TroncateLocalLogFileName = "C:\Temp\$ExecDate"
$ScriptBlock= {
Param ($TroncateLocalLOgFileName)
Get-Date
Echo *****************
Write-Host "Blablabla is running on" $Env:ComputerName ", please wait..."
Echo "Blablabla is running, please wait..."
& "C:\Program Files\firstscript.ps1"
Echo *****************
Echo "Enabling BLABLABLA for $env:computername..."
Set-ItemProperty -Path HKLM:\MyRegistryPath -name MyRegistryKey -Value 1
Echo *****************
Echo "End of procedure"
Write-Host "BALBALBLA for" $env:computername "is done"
Echo *****************
Get-Date
} > $TroncateLocalLOgFileName"_$Env:ComputerName.log" 2>&1
invoke-command -ComputerName $ListOfServers -ArgumentList $TroncateLocalLogFileName -ScriptBlock $ScriptBlockforeach ($Computer in $ListOfServers) {
robocopy \\$Computer\$LogSource $LogDestination\ $Execdate"_*" /MOV
Does anyone knows how to add some string to output inside an Invoke-Command to get the required result ?
I tried everything I could think of without anything getting near...
Thanks in advance for your help.

Answer 1

Hi Pierre,
If you want to export the result to a single log file instead of mutiple log files located on every remote computers, please try to export the log file outside the scriptblock of the the cmdlet "Invoke-Command", and use the cmdlet "Out-File"
to append every result from remote computers to a single file:
$ExecDate = Get-Date -Format yyyy-MM-dd_HH-mm
$TroncateLocalLogFileName = "C:\Temp\$ExecDate"
$ScriptBlock= {
Param ($TroncateLocalLOgFileName)
Get-Date
Echo *****************
Write-Host "Blablabla is running on" $Env:ComputerName ", please wait..."
Echo "Blablabla is running, please wait..."
& "C:\Program Files\firstscript.ps1"
Echo *****************
Echo "Enabling BLABLABLA for $env:computername..."
Set-ItemProperty -Path HKLM:\MyRegistryPath -name MyRegistryKey -Value 1
Echo *****************
Echo "End of procedure"
Write-Host "BALBALBLA for" $env:computername "is done"
Echo *****************
Get-Date
invoke-command -ComputerName $ListOfServers -ArgumentList $TroncateLocalLogFileName -ScriptBlock $ScriptBlock | out-file $TroncateLocalLOgFileName"_$Env:ComputerName.log" -append
If there is anything else regarding this issue, please feel free to post back.
Best Regards,
Anna Wang