73302edc61
To start rabbitmq-server, epmd needs to listen on the controller IP. I'm discussing this in bugzilla now but want to document this behaviour so that others will not run into it. Change-Id: I9406ed002b68e8b5c9c60b7a07a10673096a527d
89 lines
4.2 KiB
XML
89 lines
4.2 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="basics-message-queue">
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<?dbhtml stop-chunking?>
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<title>Message queue</title>
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<para>OpenStack uses a <glossterm>message queue</glossterm> to coordinate
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operations and status information among services. The message queue
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service typically runs on the controller node. OpenStack supports several
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message queue services including
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<link xlink:href="http://www.rabbitmq.com">RabbitMQ</link>,
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<link xlink:href="http://qpid.apache.org">Qpid</link>, and
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<link xlink:href="http://zeromq.org">ZeroMQ</link>.
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However, most distributions that package OpenStack support a particular
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message queue service. This guide implements the RabbitMQ message queue
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service because most distributions support it. If you prefer to implement
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a different message queue service, consult the documentation associated
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with it.</para>
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<procedure>
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<title>To install the message queue service</title>
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<step os="ubuntu">
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<para>Add the upstream repository key:</para>
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<screen><prompt>#</prompt> <userinput>curl -O https://www.rabbitmq.com/rabbitmq-signing-key-public.asc</userinput>
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<prompt>#</prompt> <userinput>apt-key add rabbitmq-signing-key-public.asc</userinput></screen>
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</step>
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<step os="ubuntu">
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<para>Add the upstream repository:</para>
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<screen><prompt>#</prompt> <userinput>echo "deb http://www.rabbitmq.com/debian/ testing main" \
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> /etc/apt/sources.list.d/rabbitmq.list</userinput></screen>
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</step>
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<step os="ubuntu">
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<para>Update the package database:</para>
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<screen><prompt>#</prompt> <userinput>apt-get update</userinput></screen>
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</step>
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<step os="ubuntu;debian">
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<para>Install the package:</para>
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<screen><prompt>#</prompt> <userinput>apt-get install rabbitmq-server</userinput></screen>
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</step>
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<step os="rhel;centos;fedora">
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<screen><prompt>#</prompt> <userinput>yum install rabbitmq-server</userinput></screen>
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</step>
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<step os="sles;opensuse">
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<screen><prompt>#</prompt> <userinput>zypper install rabbitmq-server</userinput></screen>
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</step>
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</procedure>
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<procedure>
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<title>To configure the message queue service</title>
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<step os="sles;opensuse"><para>Configure access to epmd on the controller IP:</para>
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<screen><prompt>#</prompt> <userinput>cp /usr/lib/systemd/system/epmd.socket /etc/systemd/system/</userinput></screen>
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<para>Edit <filename>/etc/systemd/system/epmd.socket</filename>
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and add a second <code>ListenStream</code> line:</para>
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<programlisting>ListenStream=10.0.0.11:4369</programlisting>
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<para>Reload systemd files:</para>
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<screen><prompt>#</prompt> <userinput>systemctl daemon-reload</userinput></screen>
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<note>
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<para>
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This is discussed in <link
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xlink:href="https://bugzilla.opensuse.org/show_bug.cgi?id=927301">openSUSE
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bug#927301</link>.
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</para>
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</note>
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</step>
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<step os="rhel;centos;fedora;sles;opensuse">
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<para>Start the message queue service and configure it to start when the
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system boots:</para>
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<screen os="rhel;centos;fedora;sles;opensuse"><prompt>#</prompt> <userinput>systemctl enable rabbitmq-server.service</userinput>
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<prompt>#</prompt> <userinput>systemctl start rabbitmq-server.service</userinput></screen>
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</step>
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<step>
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<para>Add the <literal>openstack</literal> user:</para>
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<screen><prompt>#</prompt> <userinput>rabbitmqctl add_user openstack <replaceable>RABBIT_PASS</replaceable></userinput>
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<computeroutput>Creating user "openstack" ...
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...done.</computeroutput></screen>
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<para>Replace <replaceable>RABBIT_PASS</replaceable> with a suitable
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password.</para>
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</step>
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<step>
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<para>Permit configuration, write, and read access for the
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<literal>openstack</literal> user:</para>
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<screen><prompt>#</prompt> <userinput>rabbitmqctl set_permissions openstack ".*" ".*" ".*"</userinput>
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<computeroutput>Setting permissions for user "openstack" in vhost "/" ...
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...done.</computeroutput></screen>
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</step>
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</procedure>
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</section>
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