Common Logs to Check

Below are the Common Linux default log files name and their usage:

• /var/log/message – Where whole system logs or current activity logs are available.

• /var/log/auth.log – Authentication logs.

• /var/log/kern.log – Kernel logs.

• /var/log/cron.log – Crond logs (cron job).

• /var/log/maillog – Mail server logs.

• /var/log/boot.log – System boot log.

• /var/log/mysqld.log – MySQL database server log file.

• /var/log/secure – Authentication log.

• /var/log/utmp or /var/log/wtmp – Login records file.

• /var/log/yum.log – Yum log files.