Configuring Rsyslog To Stop The Logging Of Certain Messages

The problem was actually coming from logrotate.

Basically with my configuration, running unicorn, I don't need to use the copytruncate directive. (which is what causes problems here)

USR1 - Reopen all logs owned by the worker process. See Unicorn::Util.reopen_logs for what is considered a log. Log files are not reopened until it is done processing the current request, so multiple log lines for one request (as done by Rails) will not be split across multiple logs.

This started working properly after updating to this configuration:

/home/user/my_app/shared/log/*.log {
  daily
  missingok
  dateext
  rotate 30
  compress
  notifempty
  extension gz
  create 640 user user
  sharedscripts

  post-rotate
    # Telling Unicorn to reload files
    test -s /home/user/my_app/shared/pids/unicorn.pid && kill -USR1 "$(cat /home/user/my_app/shared/pids/unicorn.pid)"

    # Reloading rsyslog telling it that files have been rotated
    reload rsyslog 2>&1 || true
  endscript
}

well... almost 2 years had gone by and finally found the solution for the issue. If anyone has the same issue please try the steps below.

syslogd version rsyslogd 8.24.0-38.el7

The issue was related to the imjournal module. I've remove all the entries of the rsyslog.conf related to imjournal and switched the OmitLocalLogging to off

After that I've restarted the rsyslog service using systemctl restart rsyslog and the log entries started to be populated to the log file that I've configured in rsyslog.conf.

The rsyslog.conf file now looks like this:

$ModLoad imuxsock
#$ModLoad imjournal
$ModLoad immark 
$WorkDirectory /var/lib/rsyslog
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
$IncludeConfig /etc/rsyslog.d/*.conf
$OmitLocalLogging off
#$IMJournalStateFile imjournal.state
*.info;mail.none;authpriv.none;cron.none                /var/log/messages
authpriv.*                                              /var/log/secure
mail.*                                                  -/var/log/maillog
cron.*                                                  /var/log/cron
*.emerg                                                 :omusrmsg:*
uucp,news.crit                                          /var/log/spooler
local7.*                                                /var/log/boot.log
local3.*                                                /var/log/sshd-second.log