openstack-manuals/doc/install-guide/section_sahara-install.xml

<?xml version="1.0" encoding="UTF-8"?>
<section 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="sahara-install">
  <title>Install the Data processing service</title>
  <para>This procedure installs the Data processing service (sahara) on the
      controller node.</para>
  <para>To install the Data processing service on the controller:</para>
  <procedure>
    <step os="rhel;centos;fedora;opensuse;sles">
      <para>Install the required packages:</para>
      <screen os="rhel;centos;fedora"><prompt>#</prompt> <userinput>yum install openstack-sahara python-saharaclient</userinput></screen>
      <screen os="opensuse;sles"><prompt>#</prompt> <userinput>zypper install openstack-sahara python-saharaclient</userinput></screen>
    </step>
    <step os="debian">
      <para>Install the packages:</para>
      <screen os="debian"><prompt>#</prompt> <userinput>apt-get install sahara python-saharaclient</userinput></screen>
    </step>
    <step os="debian">
      <para>Respond to prompts for
        <link linkend="debconf-dbconfig-common">database management</link>,
        <link linkend="debconf-keystone_authtoken">Identity service
        credentials</link>,
        <link linkend="debconf-api-endpoints">service endpoint
        registration</link>, and
        <link linkend="debconf-rabbitmq">message broker
        credentials</link>.</para>
    </step>
    <step os="ubuntu">
      <warning><para>You need to install the required packages. For now, sahara
          doesn't have packages for Ubuntu.
          Documentation will be updated once the packages are available. The rest
          of this document assumes that you have the sahara service packages
          installed on the system.</para></warning>
    </step>
    <step>
      <para>Edit <filename>/etc/sahara/sahara.conf</filename> configuration file</para>
      <substeps>
        <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>First, edit <option>connection</option> parameter in
          the <literal>[database]</literal> section. The URL provided here
          should point to an empty database. For instance, connection
          string for MySQL database will be:
          <programlisting language="ini">connection = mysql://sahara:<replaceable>SAHARA_DBPASS</replaceable>@<replaceable>controller</replaceable>/sahara</programlisting>
        </para></step>
        <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>Switch to the <literal>[keystone_authtoken]</literal>
         section. The <option>auth_uri</option> parameter should point to
         the public Identity API endpoint. <option>identity_uri</option>
         should point to the admin Identity API endpoint. For example:
          <programlisting language="ini">auth_uri = http://<replaceable>controller</replaceable>:5000/v2.0
identity_uri = http://<replaceable>controller</replaceable>:35357</programlisting>
        </para></step>
        <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>Next specify <literal>admin_user</literal>,
          <literal>admin_password</literal> and
          <literal>admin_tenant_name</literal>. These parameters must specify
          a keystone user which has the <literal>admin</literal> role in the
          given tenant. These credentials allow sahara to authenticate and
          authorize its users.
        </para></step>
        <step><para>Switch to the <literal>[DEFAULT]</literal> section.
          Proceed to the networking parameters. If you are using Neutron
          for networking, then set <literal>use_neutron=true</literal>.
          Otherwise if you are using <systemitem>nova-network</systemitem> set
          the given parameter to <literal>false</literal>.
        </para></step>
        <step><para>That should be enough for the first run. If you want to
          increase logging level for troubleshooting, there are two parameters
          in the config: <literal>verbose</literal> and
          <literal>debug</literal>. If the former is set to
          <literal>true</literal>, sahara will
          start to write logs of <literal>INFO</literal> level and above. If
          <literal>debug</literal> is set to
          <literal>true</literal>, sahara will write all the logs, including
          the <literal>DEBUG</literal> ones.
        </para></step>
      </substeps>
    </step>
    <step><para>If you use the Data processing service with a MySQL database,
      then for storing big job binaries in the sahara internal database you must
      configure the size of max allowed packets. Edit the <filename>my.cnf</filename>
      file and change parameter:
      <programlisting language="ini">[mysqld]
max_allowed_packet = 256M</programlisting>
      and restart MySQL server.
    </para></step>
    <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>Create database schema:
      <screen><prompt>#</prompt> <userinput>sahara-db-manage --config-file /etc/sahara/sahara.conf upgrade head</userinput></screen>
    </para></step>
    <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>You must register the Data processing service with the Identity
      service so that other OpenStack services can locate it. Register the
      service and specify the endpoint:
      <screen><prompt>$</prompt> <userinput>keystone service-create --name sahara --type data_processing \
  --description "Data processing service"</userinput>
<prompt>$</prompt> <userinput>keystone endpoint-create \
  --service-id $(keystone service-list | awk '/ sahara / {print $2}') \
  --publicurl http://<replaceable>controller</replaceable>:8386/v1.1/%\(tenant_id\)s \
  --internalurl http://<replaceable>controller</replaceable>:8386/v1.1/%\(tenant_id\)s \
  --adminurl http://<replaceable>controller</replaceable>:8386/v1.1/%\(tenant_id\)s \
  --region regionOne</userinput></screen>
    </para></step>
    <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>Start the sahara service:
      <screen os="rhel;centos;fedora;opensuse;ubuntu"><prompt>#</prompt> <userinput>systemctl start openstack-sahara-all</userinput></screen>
      <screen os="sles"><prompt>#</prompt> <userinput>service openstack-sahara-all start</userinput></screen>
    </para></step>
    <step os="rhel;centos;fedora;opensuse;sles;ubuntu"><para>(Optional) Enable the Data processing service to start on boot
      <screen os="rhel;centos;fedora;opensuse;ubuntu"><prompt>#</prompt> <userinput>systemctl enable openstack-sahara-all</userinput></screen>
      <screen os="sles"><prompt>#</prompt> <userinput>chkconfig openstack-sahara-all on</userinput></screen>
    </para></step>
  </procedure>
</section>