Cross-Compiled Linux From Scratch - Version 1.2.0-x86

Chapter 10. Installing Basic System Software

10.57. Rsyslog-6.1.7

The rsyslog package contains programs for logging system messages, such as those given by the kernel when unusual things happen.

10.57.1. Installation of Rsyslog

Prepare Rsyslog for compilation: 

./configure --prefix=/usr

Compile the package: 

make

This package does not come with a test suite.

Install the package: 

make install

Create a directory for expansion snippets: 

install -dv /etc/rsyslog.d

10.57.2. Configuring rsyslog

Create a new /etc/rsyslog.conf file by running the following: 

cat > /etc/rsyslog.conf << "EOF"
# Begin /etc/rsyslog.conf

# CLFS configuration of rsyslog. For more info use man rsyslog.conf

#######################################################################
# Rsyslog Modules

# Support for Local System Logging
$ModLoad imuxsock.so

# Support for Kernel Logging
$ModLoad imklog.so

#######################################################################
# Global Options

# Use traditional timestamp format.
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

# Set the default permissions for all log files.
$FileOwner root
$FileGroup root
$FileCreateMode 0640
$DirCreateMode 0755

# Provides UDP reception
$ModLoad imudp
$UDPServerRun 514

# Disable Repeating of Entries
$RepeatedMsgReduction on

#######################################################################
# Include Rsyslog Config Snippets

$IncludeConfig /etc/rsyslog.d/*.conf

#######################################################################
# Standard Log Files

auth,authpriv.*                 /var/log/auth.log
*.*;auth,authpriv.none          -/var/log/syslog
daemon.*                        -/var/log/daemon.log
kern.*                          -/var/log/kern.log
lpr.*                           -/var/log/lpr.log
mail.*                          -/var/log/mail.log
user.*                          -/var/log/user.log

# Catch All Logs
*.=debug;\
        auth,authpriv.none;\
        news.none;mail.none     -/var/log/debug
*.=info;*.=notice;*.=warn;\
        auth,authpriv.none;\
        cron,daemon.none;\
        mail,news.none          -/var/log/messages

# Emergencies are shown to everyone
*.emerg                         *

# End /etc/rsyslog.conf
EOF

10.57.3. Contents of rsyslog

Installed programs: rsyslogd
Installed directory: /usr/lib/rsyslog

Short Descriptions

rsyslogd

Logs the messages that system programs offer for logging. Every logged message contains at least a date stamp and a hostname, and normally the program's name too, but that depends on how trusting the logging daemon is told to be.