Merge "Modified image service documentation"

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Jenkins 2017-01-19 09:13:15 +00:00 committed by Gerrit Code Review
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doc
common
install-guide/source

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

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