doc/mmnormalize.html


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head>
<title>Log Message Normalization Module (mmnormalize)</title>
</head>
<body>
<a href="rsyslog_conf_modules.html">back</a>

<h1>Log Message Normalization Module</h1>
<p><b>Module Name:&nbsp;&nbsp;&nbsp; mmnormalize</b></p>
<p><b>Available since: </b>6.1.2+
<p><b>Author: </b>Rainer Gerhards &lt;rgerhards@adiscon.com&gt;</p>
<p><b>Description</b>:</p>
<p>This module provides the capability to normalize log messages via
<a href="http://www.liblognorm.com">liblognorm</a>. Thanks to libee, unstructured text,
like usually found in log messages, can very quickly be parsed and put into
a normal form. This is done so quickly, that it usually should be possible
to normalize events in realtime.
<p>This module is implemented via the output module interface. That means that
mmnormalize should be called just like an action. After it has been called,
the normalized message properties are avaialable and can be access. These properties
are called the "CEE" properties, because liblognorm creates a format that is 
inspired by the CEE approach.
<p>Note that mmnormalize should only be called once on each message. Behaviour is
undifined if multiple calls to mmnormalize happen for the same message.
</p>
<p><b>Configuration Directives</b>:</p>
<ul>
<li>$mmnormalizeRuleBase &lt;rulebase-file&gt;<br>
Specifies which rulebase file is to use. This file is loaded. If there are
multiple mmnormalize instances, each one can use a different file. However,
a single instance can use only a single file. This parameter MUST be given,
because normalization can only happen based on a rulebase.
<li>$mmnormalizeUseRawMsg &lt;on/off&gt;<br>
Specifies if the raw message should be used for normalization (on) or just the
MSG part of the message (off). Default is "off".
</ul>
<b>Caveats/Known Bugs:</b>
<p>None known at this time.
</ul>
<p><b>Sample:</b></p>
<p>This activates the module and applies normalization to all messages:<br>
</p>
<textarea rows="8" cols="60">$ModLoad mmnormalize
$mmnormalizeRuleBase rulebase.rb
*.* :mmnormalize:
</textarea>
<p>[<a href="rsyslog_conf.html">rsyslog.conf overview</a>]
[<a href="manual.html">manual index</a>] [<a href="http://www.rsyslog.com/">rsyslog site</a>]</p>
<p><font size="2">This documentation is part of the
<a href="http://www.rsyslog.com/">rsyslog</a>
project.<br>
Copyright &copy; 2010 by <a href="http://www.gerhards.net/rainer">Rainer
Gerhards</a> and
<a href="http://www.adiscon.com/">Adiscon</a>.
Released under the GNU GPL version 3 or higher.</font></p>
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