Difference between revisions of "Installing a Logger"

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== Introduction ==
 
== Introduction ==
 
In case you ever need to view important system messages, it is a wise idea to install a system logger. System loggers create a log in ‘’/var/log’’ Several different loggers exist. Listed below are some of the more commonly used loggers:
 
In case you ever need to view important system messages, it is a wise idea to install a system logger. System loggers create a log in ‘’/var/log’’ Several different loggers exist. Listed below are some of the more commonly used loggers:
* 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."  
+
* '''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."  
 
+
* '''syslog-ng'''
 
+
* '''rsyslog'''
* syslog-ng
+
* rsyslog
+
  
 
== Installation and adding to runlevel ==
 
== Installation and adding to runlevel ==

Revision as of 01:21, October 19, 2013

Introduction

In case you ever need to view important system messages, it is a wise idea to install a system logger. System loggers create a log in ‘’/var/log’’ Several different loggers exist. Listed below are some of the more commonly used loggers:

  • 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."
  • syslog-ng
  • rsyslog

Installation and adding to runlevel

To install a logger, run the following command:

#  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] #  yes

After installing the logger, we have to add its initialization script to RC’s default runlevel. The default runlevel, defined at /etc/runlevels/default, 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:

#  rc-update add metalog default
 * service metalog added to runlevel default
#  rc
 * Starting metalog ...

Stopping the service

If, for whatever reason, you need to stop a service manually, you can run its initialization script directly from /etc/init.d:

# /etc/init.d/metalog stop
 * Stopping metalog ...