<?xml version="1.0" encoding="UTF-8"?>
<section xml:id="object-storage-post-install"
        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">
        <title>Object Storage post-installation tasks</title>
        <xi:include
                href="section_object-storage-verifying-install.xml"/>
        <section xml:id="adding-proxy-server">
                <title>Add a proxy server</title>
                <para>For reliability, you add proxy servers. You can
                        set up an additional proxy node the same way
                        that you set up the first proxy node but with
                        additional configuration steps.</para>
                <para>After you have more than two proxies, you must
                        load balance them; your storage endpoint (what
                        clients use to connect to your storage) also
                        changes. You can select from different
                        strategies for load balancing. For example,
                        you could use round-robin DNS, or a software
                        or hardware load balancer (like pound) in
                        front of the two proxies, and point your
                        storage URL to the load balancer.</para>
                <para>Configure an initial proxy node. Then, complete
                        these steps to add proxy servers.</para>
                <procedure>
                        <step>
                                <para>Update the list of memcache
                                   servers in the
                                   <filename>/etc/swift/proxy-server.conf</filename>
                                   file for added proxy servers. If
                                   you run multiple memcache servers,
                                   use this pattern for the multiple
                                   IP:port listings in each proxy
                                   server configuration file:</para>
                                <literallayout class="monospaced">10.1.2.3:11211,10.1.2.4:11211</literallayout>
                                <literallayout class="monospaced">[filter:cache]
use = egg:swift#memcache
memcache_servers = <replaceable>PROXY_LOCAL_NET_IP</replaceable>:11211</literallayout>
                        </step>
                        <step>
                                <para>Copy ring information to all
                                   nodes, including new proxy nodes.
                                   Also, ensure that the ring
                                   information gets to all storage
                                   nodes.</para>
                        </step>
                        <step>
                                <para>After you sync all nodes, make
                                   sure that the admin has keys in
                                   <filename>/etc/swift</filename> and
                                   the ownership for the ring file is
                                   correct.</para>
                        </step>
                </procedure>
        </section>
</section>