activemq-artemis/docs/design-guide/en/clustering.xml

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<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % BOOK_ENTITIES SYSTEM "ActiveMQ_Design_Guide.ent">
%BOOK_ENTITIES;
]>
<chapter id="introduction">
    <title>Getting Started</title>
    <para>This chapter discusses the architecture behind clustering</para>
    <section>
       <title>Discovery</title>
       <para>Discovery is done in 2 steps, initial discovery where the server locates another node in the cluster and 
       topology discovery where the node finds out about all other nodes in the cluster</para>
       <section>
          <title>Initial Discovery</title>
          <para>blah blah blah, UDP, static connectors etc etc</para>
       </section>
       <section>
          <title>Topology Discovery</title>
          <para>blah blah blah, topology etc</para>
         <para>
            <graphic fileref="images/topology-update.jpg" align="center" format="JPEG" scale="30"/>
         </para>
       </section>
    </section>
</chapter>