Thruk - Logfiles

Logfiles

Logfiles are usually in /var/log/thruk/thruk.log. If you use OMD, then the logfiles are in ~/var/log/thruk.log.

Cronjobs have their own logfile in ~/var/thruk/cron.log for OMD or /var/lib/thruk/cron.log for standalone installations.

Logfile Configuration

Logging configuration takes place in the log4perl.conf. You can do whatever is possible in log4perl. Refer to the log4perl manual for detailed information: http://log4perl.sourceforge.net/releases/Log-Log4perl/docs/html/Log/Log4perl/Config.html There is a log4perl.conf.example file shipped with the package.

ex.:

log4perl.logger=ALL, ErrorLog, DebugLog
log4perl.appender.ErrorLog=Log::Dispatch::File
log4perl.appender.ErrorLog.filename=/home/thruk/Thruk/logs/error.log
log4perl.appender.ErrorLog.mode=append
log4perl.appender.ErrorLog.Threshold=ERROR
log4perl.appender.ErrorLog.layout=Log::Log4perl::Layout::PatternLayout
log4perl.appender.ErrorLog.layout.ConversionPattern=[%d][%H][%p][%c] %m%n

command logging

if you want to log all sent commands, just set the loglevel to INFO.

ex.: log4perl.appender.ErrorLog.Threshold=INFO

Enable Debug Logging

To get more verbose log output, you have to create a .thruk file in the home directory of the Thruk user (usually the webserver user) or in case of OMD in the site folder.

The following locations will work depending on your setup:

~/.thruk
/etc/sysconfig/thruk
/etc/default/thruk

Then put in the following settings inside:

to increase the loglevel: (valid loglevels are 0-4 with 4 being most verbose)

export THRUK_VERBOSE=4

to track all requests with their cpu and memory usage:

export THRUK_PERFORMANCE_DEBUG=1

Example 1. increase log threshold

You also have to adjust the loglevel threshold in /etc/thruk/log4perl.conf.

ex.: log4perl.appender.ThrukLog.Threshold=DEBUG

Also some log output will end up in the apache errorlog.