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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 ​

Configure logging in log4perl.conf. Thruk supports all log4perl options. For details, read the log4perl manual: http://log4perl.sourceforge.net/releases/Log-Log4perl/docs/html/Log/Log4perl/Config.html The package includes log4perl.conf.example.

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

To log all sent commands, set the log level to INFO.

text
log4perl.appender.ErrorLog.Threshold=INFO

Enable Debug Logging ​

To get more detailed logs, create a .thruk file in the Thruk user's home directory (usually the webserver user). For OMD, create it in the site folder.

The following locations will work depending on your setup:

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

Add these settings to the file:

To increase the log level, use a value from 0-4. The most detailed level is 4.

export THRUK_VERBOSE=4

To track CPU and memory usage for all requests:

export THRUK_PERFORMANCE_DEBUG=1

Also adjust the log level threshold in /etc/thruk/log4perl.conf, for example:

text
log4perl.appender.ThrukLog.Threshold=DEBUG

Some log output also goes to the Apache error log.