Modified image service documentation
Moved a paragraph from table of contents page to the overview page. Change-Id: I314e7399e7cfa48fe0911ff585b0defe3743a80a Closes-Bug: #1643243
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Image service overview
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Image service overview
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======================
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======================
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The Image service (glance) enables users to discover,
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register, and retrieve virtual machine images. It offers a
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:term:`REST <RESTful>` API that enables you to query virtual
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machine image metadata and retrieve an actual image.
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You can store virtual machine images made available through
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the Image service in a variety of locations, from simple file
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systems to object-storage systems like OpenStack Object Storage.
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.. important::
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For simplicity, this guide describes configuring the Image service to
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use the ``file`` back end, which uploads and stores in a
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directory on the controller node hosting the Image service. By
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default, this directory is ``/var/lib/glance/images/``.
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Before you proceed, ensure that the controller node has at least
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several gigabytes of space available in this directory. Keep in
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mind that since the ``file`` back end is often local to a controller
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node, it is not typically suitable for a multi-node glance deployment.
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For information on requirements for other back ends, see
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`Configuration Reference
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<http://docs.openstack.org/newton/config-reference/image.html>`__.
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The OpenStack Image service is central to Infrastructure-as-a-Service
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The OpenStack Image service is central to Infrastructure-as-a-Service
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(IaaS) as shown in :ref:`get_started_conceptual_architecture`. It accepts API
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(IaaS) as shown in :ref:`get_started_conceptual_architecture`. It accepts API
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requests for disk or server images, and metadata definitions from end users or
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requests for disk or server images, and metadata definitions from end users or
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@ -7,27 +7,3 @@ Image service
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common/get-started-image-service.rst
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common/get-started-image-service.rst
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glance-install.rst
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glance-install.rst
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glance-verify.rst
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glance-verify.rst
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The Image service (glance) enables users to discover,
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register, and retrieve virtual machine images. It offers a
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:term:`REST <RESTful>` API that enables you to query virtual
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machine image metadata and retrieve an actual image.
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You can store virtual machine images made available through
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the Image service in a variety of locations, from simple file
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systems to object-storage systems like OpenStack Object Storage.
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.. important::
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For simplicity, this guide describes configuring the Image service to
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use the ``file`` back end, which uploads and stores in a
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directory on the controller node hosting the Image service. By
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default, this directory is ``/var/lib/glance/images/``.
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Before you proceed, ensure that the controller node has at least
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several gigabytes of space available in this directory. Keep in
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mind that since the ``file`` back end is often local to a controller
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node, it is not typically suitable for a multi-node glance deployment.
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For information on requirements for other back ends, see
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`Configuration Reference
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<http://docs.openstack.org/newton/config-reference/image.html>`__.
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