a2d662d600
The XML root element of Docbook XML files should match the following format: <ELEMENT xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0" xml:id="THE_XML_ID_OF_THE_ELEMENT"> Change-Id: I1e0804e2c5021bd78b77483f3156c5b069453555
55 lines
3.1 KiB
XML
55 lines
3.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section 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"
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version="5.0"
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xml:id="adding-proxy-server">
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<title>Add another proxy server</title>
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<para>To provide additional reliability and bandwidth
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to your cluster, you can add proxy servers. You can
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set up an additional proxy node the same way
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that you set up the first proxy node but with
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additional configuration steps.</para>
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<para>After you have more than two proxies, you must
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load balance them; your storage endpoint (what
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clients use to connect to your storage) also
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changes. You can select from different
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strategies for load balancing. For example,
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you could use round-robin DNS, or a software
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or hardware load balancer (like pound) in
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front of the two proxies. You can then point your
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storage URL to the load balancer, configure an initial
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proxy node and complete these steps to add proxy
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servers.</para>
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<procedure>
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<step>
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<para>Update the list of memcache
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servers in the
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<filename>/etc/swift/proxy-server.conf</filename>
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file for added proxy servers. If
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you run multiple memcache servers,
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use this pattern for the multiple
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IP:port listings in each proxy
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server configuration file:</para>
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<literallayout class="monospaced">10.1.2.3:11211,10.1.2.4:11211</literallayout>
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<literallayout class="monospaced">[filter:cache]
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use = egg:swift#memcache
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memcache_servers = <replaceable>PROXY_LOCAL_NET_IP</replaceable>:11211</literallayout>
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</step>
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<step>
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<para>Copy ring information to all
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nodes, including new proxy nodes.
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Also, ensure that the ring
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information gets to all storage
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nodes.</para>
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</step>
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<step>
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<para>After you sync all nodes, make
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sure that the admin has keys in
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<filename>/etc/swift</filename> and
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the ownership for the ring file is
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correct.</para>
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</step>
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</procedure>
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</section>
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