CompTIA Linux+ Portable Command Guide: All the commands for the CompTIA XK0-004 exam in one compact, portable resource, 2nd Edition

Chapter 18. Given a scenario, implement logging services

This chapter provides information and commands concerning the following topics:

Key file locations

• /var/log/secure

• /var/log/messages

• /var/log/[application]

• /var/log/kern.log

Log management

• Third-party agents

• logrotate

• /etc/rsyslog.conf

• journald, journalctl

• lastb

Key File Locations

The /var/log directory is the standard location for log files to be placed. Some of these log files are created by the logging daemons, while others are created by individual applications. This section covers some of the key log files.

/var/log/secure

The /var/log/secure file contains log entries related to authentication and authorization operations. This can include entries of when users log in, attempts ...