Server log files contain informational messages about the kernel, applications, and services running on the system. These files can be very useful for troubleshooting and debugging system-level issues. DBAs often look in the system log files as a first step in diagnosing server issues. Even if you're working with competent system administrators, you can still save yourself time (and gain valuable insights to the root cause of a problem) by inspecting the log files yourself.
Most of the system log files are located in the
/var/log directory. Typically there is a log file for a specific application or service. For example, the
cron utility has a log file named
cron (no surprise) in the
/var/log directory. Depending on ...