Difference between pages "Installing a Logger" and "Installing a Cron Daemon"

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== Introduction ==
In case you ever need to view important system messages, it is a wise idea to install a system logger. System loggers create log files that contain system messages, and stores these logs in <code>/var/log</code>. Several different loggers exist. Listed below are some of the more commonly used loggers:
* '''{{Package|app-admin/metalog}}''' - "Metalog is a modern replacement for syslogd and klogd. The logged messages can be dispatched according to their facility, urgency, program name and/or Perl-compatible regular expressions." This is a good, light-weight logger that is often used for desktop systems. ([http://metalog.sourceforge.net Metalog homepage])
* '''{{Package|app-admin/syslog-ng}}''' - "syslog-ng is the trusted log management infrastructure for hundreds of thousands of users worldwide. Organizations use syslog-ng to reliably and securely collect, process and store log messages from across their IT environments." syslog-ng is often used when more advanced logging functionality is required, and is highly customizable. ([http://balabit.com/network-security/syslog-ng Syslog-ng homepage])
* '''{{Package|app-admin/rsyslog}}''' - "rsyslog is an alternative logger to syslog-ng and offers many benefits over syslog-ng. rsyslog is also the default logger for the latest versions of Red Hat Enterprise Linux, as well as many other Linux distributions." ([http://wiki.archlinux.org/index.php/rsyslog Arch wiki page])
== Installation and adding to runlevel ==
To install a logger, run the following command:
###i## emerge --ask metalog
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild  N    ] app-admin/metalog-3-r1  USE="unicode" 353 kB
Total: 1 package (1 new), Size of downloads: 353 kB
Would you like to merge these packages? [Yes/No] ##i## yes
After installing the logger, we have to add its initialization script to RC’s default runlevel. The default runlevel, defined at <code>/etc/runlevels/default</code>, contains symbolic links to all system initialization scripts that are run by default. To add the logger to the runlevel and then start the logger, run the following:
###i## rc-update add metalog default
* service metalog added to runlevel default
###i## rc
* Starting metalog ...
== Stopping the service ==
If you need to stop the service manually, you can run its initialization script directly from <code>/etc/init.d</code>:
###i## /etc/init.d/metalog stop
* Stopping metalog ...

Revision as of 16:07, October 19, 2013