Lab 8 – Troubleshooting Linux and Apache Systems

Materials Needed:

• Computer
• Internet connection
• Root access to Linux account

Assignment:

1. Review the Linux/Unix log files.
• /var/run/utmp - tracks who is logged into the system
• Use who, finger to view
• /var/log/wtmp - tracks who has logged in and out of the system
• Use last to view
• /var/log/btmp - tracks failed logon attempts
• Use lastb to view
• /var/log/messages - keeps messages from the syslog facility
• can only be viewed by root
• /var/log/secure - tracks access and authentication information
• can only be viewed by root
• /var/log/maillog – keeps messages from the mail facility
• can only be viewed by root
• lastlog – formats and prints the contents of the last login log /var/log/lastlog file . The login-name, port, and last login time will be printed.

2. Review the Apache (httpd) log files
• /etc/httpd/conf contains the configuration file httpd.conf for Apache
• /etc/httpd/logs contains the log files for Apache:
• access_log
• error_log
• ssl_access_log
• ssl_error_log
• ssl_request_log