Logs files and Path on Linux server

General message and system related stuff

* /var/log/message

Authentication logs

/var/log/auth.log

Kernel logs

/var/log/kern.log

Crond logs (cron job)

/var/log/cron.log

Mail server logs

/var/log/maillog

Qmail log directory (more files inside this directory)

/var/log/qmail/

Apache access and error logs directory

 /var/log/httpd/

Lighttpd access and error logs directory

 /var/log/lighttpd

System boot log

 /var/log/boot.log

MySQL database server log file

 /var/log/mysqld.log

Authentication log

 /var/log/secure

Login records file

 /var/log/utmp

or

/var/log/wtmp

Yum log files

 /var/log/yum.log