Increase logging for Railgun
When troubleshooting or testing the Railgun Listener, it may be necessary to raise the level of verbosity to capture more log data for debugging.
To increase logging, set the log.level
within railgun.conf
to 5
so that all events within the listener instance are captured during troubleshooting.
The log files for Railgun can be found in the following locations for each supported operating system:
Debian/Ubuntu
Default Location:
/var/log/syslog
. When thelog.level
is set to5
inrailgun.conf
, no further action is needed to have very verbose logs appear in syslog.CentOS/RHEL
Default Location:
/var/log/messages
.By default, CentOS and RHEL omit many logs from
/messages
. A few extra steps are needed to achieve the same level of verbosity as Debian/Ubuntu:Edit
/etc/rsyslog.conf
so that the line that reads*.info;mail.none;authpriv.none;cron.none /var/log/messages
is updated to be*.* /var/log/messages
. Comment out the default line and add this on a new line below it. Another option is to create a new log file.Restart
rsyslog
and Railgun services. This may need to be done withsudo
or asroot
:$ service rsyslog restart$ service railgun restartIf Railgun or
memcached
fails/crashes, logs can be found under/var/log/railgun/panic.log
.