92 lines
3.7 KiB
XML
92 lines
3.7 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="trove-service">
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<title>OpenStack Database service</title>
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<para>The Database service provides scalable and reliable cloud provisioning
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functionality for both relational and non-relational database engines. Users
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can quickly and easily use database features without the burden of
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handling complex administrative tasks. Cloud users and database
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administrators can provision and manage multiple database instances as
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needed.</para>
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<para>The Database service provides resource isolation at high performance
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levels, and automates complex administrative tasks such as deployment,
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configuration, patching, backups, restores, and monitoring.</para>
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<formalpara>
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<title>Process flow example</title>
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<para>This example is a high-level process flow for using Database
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services:</para>
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</formalpara>
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<procedure>
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<step><para>The OpenStack Administrator configures the basic infrastructure
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using the following steps:</para>
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<substeps>
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<step>
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<para>Install the Database service.</para>
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</step>
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<step>
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<para>Create an image for each type of database. For example, one for
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MySQL and one for MongoDB.</para>
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</step>
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<step>
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<para>Use the <command>trove-manage</command> command to import images
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and offer them to tenants.</para>
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</step>
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</substeps>
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</step>
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<step>
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<para>The OpenStack end user deploys the Database service using the following
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steps:</para>
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<substeps>
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<step>
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<para>Create a Database service instance using the
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<command>trove create</command>
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command.</para>
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</step>
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<step>
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<para>Use the <command>trove list</command> command to get the ID of
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the instance, followed by the <command>trove show</command> command to get the IP
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address of it.</para>
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</step>
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<step>
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<para>Access the Database service instance using typical database access
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commands. For example, with MySQL:</para>
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<screen><prompt>$</prompt> mysql -u myuser -p -h <replaceable>TROVE_IP_ADDRESS</replaceable> mydb</screen>
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</step>
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</substeps>
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</step>
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</procedure>
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<para>The Database service includes the following components:</para>
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<variablelist>
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<varlistentry>
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<term><code>python-troveclient</code> command-line client</term>
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<listitem><para>A CLI that communicates with the <code>trove-api</code>
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component.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><code>trove-api</code> component</term>
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<listitem><para>Provides an OpenStack-native RESTful API that supports
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JSON to provision and manage Trove instances.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><code>trove-conductor</code> service</term>
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<listitem><para>Runs on the host, and receives messages from guest
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instances that want to update information on the host.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><code>trove-taskmanager</code> service</term>
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<listitem><para>Instruments the complex system flows that support
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provisioning instances, managing the lifecycle of instances, and
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performing operations on instances.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><code>trove-guestagent</code> service</term>
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<listitem><para>Runs within the guest instance. Manages and performs
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operations on the database itself.</para></listitem>
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</varlistentry>
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</variablelist>
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</section>
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