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<div class="section" id="concepts">
<h1>Concepts<a class="headerlink" href="#concepts" title="Permalink to this headline">¶</a></h1>
<p>This chapter describes important rsyslog concepts and objects. Where
appropriate, it also refers to configurations settings to affect
the respective objects.</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="queues.html">Understanding rsyslog Queues</a><ul>
<li class="toctree-l2"><a class="reference internal" href="queues.html#where-are-queues-used">Where are Queues Used?</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#queue-modes">Queue Modes</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#limiting-the-queue-size">Limiting the Queue Size</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#worker-thread-pools">Worker Thread Pools</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#filled-up-queues">Filled-Up Queues</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="janitor.html">The Janitor Process</a></li>
<li class="toctree-l1"><a class="reference internal" href="messageparser.html">Message parsers in rsyslog</a><ul>
<li class="toctree-l2"><a class="reference internal" href="messageparser.html#intro">Intro</a></li>
<li class="toctree-l2"><a class="reference internal" href="messageparser.html#what-are-message-parsers">What are message parsers?</a></li>
<li class="toctree-l2"><a class="reference internal" href="messageparser.html#how-are-message-parsers-used">How are message parsers used?</a></li>
<li class="toctree-l2"><a class="reference internal" href="messageparser.html#which-message-parsers-are-available">Which message parsers are available</a></li>
<li class="toctree-l2"><a class="reference internal" href="messageparser.html#conclusion">Conclusion</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="multi_ruleset.html">Multiple Rulesets in rsyslog</a><ul>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#what-is-a-ruleset">What is a Ruleset?</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#what-does-to-bind-to-a-ruleset-mean">What does “To bind to a Ruleset” mean?</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#why-are-rulesets-important-for-different-parser-configurations">Why are rulesets important for different parser configurations?</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#can-i-use-a-different-ruleset-as-the-default">Can I use a different Ruleset as the default?</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#rulesets-and-queues">Rulesets and Queues</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#examples">Examples</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#performance">Performance</a></li>
<li class="toctree-l2"><a class="reference internal" href="multi_ruleset.html#see-also">See Also</a></li>
</ul>
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<li class="toctree-l1"><a class="reference internal" href="netstrm_drvr.html">NetStream Drivers</a><ul>
<li class="toctree-l2"><a class="reference internal" href="netstrm_drvr.html#current-network-stream-drivers">Current Network Stream Drivers</a></li>
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<div class="admonition seealso">
<p class="first admonition-title">See also</p>
<p>Help with configuring/using <code class="docutils literal"><span class="pre">Rsyslog</span></code>:</p>
<ul class="last simple">
<li><a class="reference external" href="http://lists.adiscon.net/mailman/listinfo/rsyslog">Mailing list</a> - best route for general questions</li>
<li>GitHub: <a class="reference external" href="https://github.com/rsyslog/rsyslog/">rsyslog source project</a> - detailed questions, reporting issues
that are believed to be bugs with <code class="docutils literal"><span class="pre">Rsyslog</span></code></li>
<li>Stack Exchange (<a class="reference external" href="https://stackexchange.com/filters/327462/rsyslog">View</a>, <a class="reference external" href="https://serverfault.com/questions/ask?tags=rsyslog">Ask</a>)
- experimental support from rsyslog community</li>
</ul>
</div>
<div class="admonition seealso">
<p class="first admonition-title">See also</p>
<p>Contributing to <code class="docutils literal"><span class="pre">Rsyslog</span></code>:</p>
<ul class="last simple">
<li>Source project: <a class="reference external" href="https://github.com/rsyslog/rsyslog/blob/master/README.md">rsyslog project README</a>.</li>
<li>Documentation: <a class="reference external" href="https://github.com/rsyslog/rsyslog-doc/blob/master/README.md">rsyslog-doc project README</a></li>
</ul>
</div>
<p>Copyright 2008-2020 <a class="reference external" href="https://rainer.gerhards.net/">Rainer Gerhards</a>
(<a class="reference external" href="https://www.rainer-gerhards.de/grossrinderfeld/">Großrinderfeld</a>),
and Others.</p>
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