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| == Introduction ==
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| 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:
| | </div><div class="col-xs-12 col-md-3">{{#vardefine:Summary|{{#show:{{FULLPAGENAME}}|?Summary}}}} |
| * '''{{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])
| | {{#vardefine:Author|{{#show:{{FULLPAGENAME}}|?Author|link=none}}}} |
| * '''{{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])
| | {{#vardefine:Icon|{{#show:{{FULLPAGENAME}}|?Icon}}}} |
| * '''{{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])
| | {{#widget:ArticleBio|body={{#show: {{#var:Author}} | ?Bio }}|user={{#var:Author|}}|icon_url={{#if:{{#var:Icon|}}|{{filepath:{{#sub:{{#var:Icon}}|5}}|80}}|http://www.gravatar.com/avatar/{{#show: {{FULLPAGENAME}} | ?Gravatar MD5}}/?s=80&d=retro&r=g}}}} |
| | | <div class="bs-head" style="text-decoration: underline; margin-bottom: 15px;">More Articles</div> |
| == Installation and adding to runlevel ==
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| To install a logger, run the following command:
| | |format=category |
| <console>
| | |link=all |
| ###i## emerge metalog | | |headers=show |
| | | |searchlabel=... further results |
| These are the packages that would be merged, in order:
| | |columns=1 |
| | | }} |
| Calculating dependencies... done!
| | </div></div></div> |
| [ebuild N ] app-admin/metalog-3-r1 USE="unicode" 353 kB
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| Total: 1 package (1 new), Size of downloads: 353 kB
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| Would you like to merge these packages? [Yes/No] ##i## yes
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| </console>
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| 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:
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| <console> | |
| ###i## rc-update add metalog default | |
| * service metalog added to runlevel default
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| ###i## rc
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| * Starting metalog ...
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| </console>
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| == Stopping the service ==
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| If you need to stop the service manually, you can run its initialization script directly from <code>/etc/init.d</code>:
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| <console>
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| ###i## /etc/init.d/metalog stop
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| * Stopping metalog ...
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| </console> | |
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| [[Category:System]]
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