42b23e8c84
Closes-Bug: #1249082 Change-Id: I9f68073da5ca25867b2b8c099cce5df34f6a3eec author: diane fleming
49 lines
2.1 KiB
XML
49 lines
2.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xml:id="example-object-storage-installation-architecture"
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xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
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<title>Example Object Storage installation architecture</title>
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<itemizedlist>
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<listitem>
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<para>node. A host machine that runs one or more OpenStack
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Object Storage services.</para>
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</listitem>
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<listitem>
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<para>Proxy node. Runs Proxy services.</para>
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</listitem>
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<listitem>
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<para>Storage node. Runs Account, Container, and Object
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services.</para>
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</listitem>
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<listitem>
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<para>Ring. A set of mappings between OpenStack Object
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Storage data to physical devices.</para>
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</listitem>
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<listitem>
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<para>Replica. A copy of an object. By default, three
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copies are maintained in the cluster.</para>
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</listitem>
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<listitem>
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<para>Zone. A logically separate section of the cluster,
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related to independent failure characteristics.</para>
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</listitem>
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</itemizedlist>
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<para>To increase reliability and performance, you can add
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additional proxy servers.</para>
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<para>This document describes each storage node as a separate zone
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in the ring. At a minimum, five zones are recommended. A zone
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is a group of nodes that is as isolated as possible from other
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nodes (separate servers, network, power, even geography). The
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ring guarantees that every replica is stored in a separate
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zone. This diagram shows one possible configuration for a
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minimal installation:</para>
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<!-- we need to fix this diagram - the auth node isn't a thing anymore-->
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<para><inlinemediaobject>
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<imageobject>
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<imagedata fileref="../figures/swift_install_arch.png"
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/>
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</imageobject>
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</inlinemediaobject></para>
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</section>
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