77 lines
3.3 KiB
XML
77 lines
3.3 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="section_image-mgmt">
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<title>Image management</title>
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<para>The OpenStack Image service discovers, registers, and
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retrieves virtual machine images. The service also includes a
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RESTful API that allows you to query VM image metadata and
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retrieve the actual image with HTTP requests. For more
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information about the API, see the <link
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xlink:href="http://developer.openstack.org/api-ref.html"
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>OpenStack API Complete Reference</link> and the <link
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xlink:href="http://docs.openstack.org/developer/python-glanceclient/"
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>Python API</link>.</para>
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<para>The OpenStack Image service can be controlled using a
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command-line tool. For more information about using the
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OpenStack Image command-line tool, see the <link
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xlink:href="http://docs.openstack.org/user-guide/common/cli_manage_images.html"
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>Manage Images</link> section in the <citetitle>OpenStack
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End User Guide</citetitle>.</para>
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<para>Virtual images that have been made available through the
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Image service can be stored in a variety of ways. In order to
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use these services, you must have a working installation of
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the Image service, with a working endpoint, and users that
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have been created in OpenStack Identity. Additionally, you
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must meet the environment variables required by the Compute
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and Image service clients.</para>
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<para>The Image service supports these back-end stores:</para>
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<variablelist>
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<varlistentry>
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<term>File system</term>
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<listitem>
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<para>The OpenStack Image service stores virtual
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machine images in the file system back end by
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default. This simple back end writes image files
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to the local file system.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>Object Storage service</term>
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<listitem>
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<para>The OpenStack highly available service for
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storing objects.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>S3</term>
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<listitem>
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<para>The Amazon S3 service.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>HTTP</term>
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<listitem>
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<para>OpenStack Image service can read virtual machine
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images that are available on the Internet using
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HTTP. This store is read only.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>RADOS block device (RBD)</term>
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<listitem>
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<para>Stores images inside of a Ceph storage cluster
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using Ceph's RBD interface.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>GridFS</term>
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<listitem>
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<para>Stores images using MongoDB.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</section>
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