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Log file content monitoring
Hi,
I’m new to Pandora FMS and I’m trying to have a monitor looking for error messages in log files.
I saw in the Pandora Agent documentation that the module_plugin grep_log could be used.
The agent is installed on a Windows XP pro workstation.
I updated the pandora_agent.conf with this line :
module_plugin grep_log “c:test.log” LogParser ERRORIt doesn’t do anything. I have no error message in the pandora_agent.log. the module is not shown on the console. I even set the debug flag and I don’t see any reference to the plugin in the pandora debug file.
I then managed to execute a .bat file that would have cheched for new lines in a log file LogMon.bat:
@echo off
REM LogMon fichier fichiertemp
set /p prev=< %2 wc -l %1 | tr -s " " ";" |cut -f2 -d; > %2
set /p actu=< %2 expr %actu% - %prev% > %2.comp
set /p diff=< %2.comp tail -%diff% %1 I updated the agent configuration file with these lines : # Test log file monitoring module_begin module_name Test_LogMon module_type generic_data_string module_exec LogMon.bat c:test.log c:test.txt | grep ERROR module_description test Logfile monitoring module_end The LogMon.bat works great if I call it from the command line. But when run by the agent, I get this in pandora_agent.log : Pandora_Module_Exec: Test_LogMon did not executed well (retcode: 259) In the debug, I have : Executing: cmd.exe /c "LogMon.bat c:test.log c:test.txt | grep ERROR" I also tried to replace the variables in the bat file by hardcoded log and temporary files, but I have the same result ... Any help would be appreciated. In advance, thank you. Best regards, Laurent -
4 Replies
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I was able to call a bat file that shows the last lines of a log file.
I think the problem came from the use of the “set” command, seems that pandora agent doesn’t like the “set variable %2
for /f %%i in (%2) do set actu=%%i
expr %actu% – %prev% > %2.comp
for /f %%i in (%2.comp) do set diff=%%i
tail -%diff% %1Still, it’s not that cute…
Any idea why module_plugin grep_log doesn’t return anything ?
thanks !
Laurent
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Hi lcourcelle,
Plugins are a feature of Pandora FMS Linux agents, they do not work under Windows. But there is a new module called module_regexp that searches a log file for matches of a given regular expression. You can compile the 3.0 Pandora FMS agent from trunk and try it or wait for the release.
[cite]Posted By: lcourcelle[/cite]
I was able to call a bat file that shows the last lines of a log file.
I think the problem came from the use of the “set” command, seems that pandora agent doesn’t like the “set variable < file"
I replaced the reading of the file by this command :
for /f %%i in (c:file.txt) do set prev=%%i
echo %prev%So how’s the bat file looks like :
@echo off
REM LogMon fichier fichiertemp
for /f %%i in (%2) do set prev=%%i
wc -l %1 | tr -s ” ” “;” |cut -f2 -d; > %2
for /f %%i in (%2) do set actu=%%i
expr %actu% – %prev% > %2.comp
for /f %%i in (%2.comp) do set diff=%%i
tail -%diff% %1Still, it’s not that cute…
Any idea why module_plugin grep_log doesn’t return anything ?
thanks !
Laurent
