openstack-manuals/doc/install-guide/section_basics-database.xml

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  xml:id="basics-database">
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  <title>Database</title>
  <para os="ubuntu;debian;rhel;fedora;centos">Most OpenStack
    services require a database to store information. These examples
    use a MySQL database that runs on the controller node. You must
    install the MySQL database on the controller node. You must
    install the MySQL Python library on any additional nodes that
    access MySQL.</para>
  <para os="opensuse;sles">Most OpenStack services require a
    database to store information. This guide uses a MySQL database
    on SUSE Linux Enterprise Server and a compatible database on
    openSUSE running on the controller node. This compatible
    database for openSUSE is MariaDB. You must install the MariaDB
    database on the controller node. You must install the MySQL
    Python library on any additional nodes that access MySQL or MariaDB.
    </para>
  <section xml:id="basics-database-controller">
    <title>Controller setup</title>
    <para><phrase os="sles">For SUSE Linux Enterprise Server:
      </phrase> On the controller node, install the MySQL client and
      server packages, and the Python library.</para>
    <screen os="opensuse;sles"><prompt>#</prompt> <userinput>zypper install mysql-client mysql python-mysql</userinput></screen>
    <para os="opensuse">For openSUSE: On the controller node,
      install the MariaDB client and database server packages,
      and the MySQL Python library.</para>
    <screen os="opensuse"><prompt>#</prompt> <userinput>zypper install mariadb-client mariadb python-mysql</userinput></screen>
    <screen os="ubuntu;debian"><prompt>#</prompt> <userinput>apt-get install python-mysqldb mysql-server</userinput></screen>
    <screen os="rhel;fedora;centos"><prompt>#</prompt> <userinput>yum install mysql mysql-server MySQL-python</userinput></screen>
    <note os="ubuntu;debian">
      <para>When you install the server package, you are prompted
        for the root password for the database. Choose a strong
        password and remember it.</para>
    </note>
    <para>The MySQL configuration requires some changes to work with
      OpenStack.</para>
    <procedure>
      <step>
        <para os="ubuntu;debian">Edit the
          <filename>/etc/mysql/my.cnf</filename> file:</para>
        <para os="opensuse;sles;rhel;fedora;centos">Edit the
          <filename>/etc/my.cnf</filename> file:</para>
        <substeps>
          <step>
            <para>Under the <literal>[mysqld]</literal> section, set the
              <literal>bind-address</literal> key to the management IP
              address of the controller node to enable access by other
              nodes via the management network:</para>
            <programlisting>[mysqld]
...
bind-address = 10.0.0.11</programlisting>
          </step>
          <step>
            <para>Under the <literal>[mysqld]</literal> section, set the
              following keys to enable InnoDB, UTF-8 character set, and
              UTF-8 collation by default:</para>
            <programlisting>[mysqld]
...
default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8</programlisting>
          </step>
        </substeps>
      </step>
    </procedure>
    <para os="ubuntu;debian">Restart the MySQL service to apply
      the changes:</para>
    <screen os="ubuntu;debian"><prompt>#</prompt> <userinput>service mysql restart</userinput></screen>
    <para os="rhel;centos;fedora;opensuse;sles">Start the <phrase
      os="rhel;fedora;centos">MySQL</phrase>
      <phrase os="opensuse;sles">MariaDB or MySQL</phrase> database
      server and set it to start automatically when the system
      boots:</para>
    <screen os="rhel;centos;fedora"><prompt>#</prompt> <userinput>service mysqld start</userinput>
<prompt>#</prompt> <userinput>chkconfig mysqld on</userinput></screen>
        <screen os="opensuse;sles"><prompt>#</prompt> <userinput>service mysql start</userinput>
<prompt>#</prompt> <userinput>chkconfig mysql on</userinput></screen>
    <para os="rhel;centos;fedora;opensuse;sles">Finally, you should
      set a root password for your <phrase os="rhel;fedora;centos"
      >MySQL</phrase>
      <phrase os="opensuse;sles">MariaDB or MySQL</phrase> database.
      The OpenStack programs that set up databases and tables prompt
      you for this password if it is set.</para>
    <para os="ubuntu;debian;rhel;centos;fedora;opensuse;sles">You must
      delete the anonymous users that are created when the database is
      first started. Otherwise, database connection problems occur
      when you follow the instructions in this guide. To do this, use
      the <command>mysql_secure_installation</command> command.
      Note that if <command>mysql_secure_installation</command> fails
      you might need to use <command>mysql_install_db</command> first:</para>
    <screen os="ubuntu;debian;rhel;centos;fedora;opensuse;sles"><prompt>#</prompt> <userinput>mysql_install_db</userinput>
<prompt>#</prompt> <userinput>mysql_secure_installation</userinput></screen>
    <para><phrase os="rhel;centos;fedora;opensuse;sles">If you have
      not already set a root database password, press
      <keycap>ENTER</keycap> when you are prompted for the
      password.</phrase> This command presents a number of options
      for you to secure your database installation. Respond
      <userinput>yes</userinput> to all prompts unless you have a
      good reason to do otherwise.</para>
  </section>
  <section xml:id="basics-database-node">
    <title>Node setup</title>
    <para>On all nodes other than the controller node, install the
        MySQL Python library:</para>
    <screen os="ubuntu;debian"><prompt>#</prompt> <userinput>apt-get install python-mysqldb</userinput></screen>
    <screen os="rhel;fedora;centos"><prompt>#</prompt> <userinput>yum install MySQL-python</userinput></screen>
    <screen os="opensuse;sles"><prompt>#</prompt> <userinput>zypper install python-mysql</userinput></screen>
  </section>
</section>