90 lines
2.8 KiB
Markdown
90 lines
2.8 KiB
Markdown
Overview
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--------
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This charm provides the Glance image service for OpenStack. It is intended to
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be used alongside the other OpenStack components, starting with the Essex
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release in Ubuntu 12.04.
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Usage
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-----
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Glance may be deployed in a number of ways. This charm focuses on 3 main
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configurations. All require the existence of the other core OpenStack
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services deployed via Juju charms, specifically: mysql, keystone and
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nova-cloud-controller. The following assumes these services have already
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been deployed.
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Local Storage
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=============
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In this configuration, Glance uses the local storage available on the server
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to store image data:
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juju deploy glance
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juju add-relation glance keystone
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juju add-relation glance mysql
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juju add-relation glance nova-cloud-controller
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Swift backed storage
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====================
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Glance can also use Swift Object storage for image storage. Swift is often
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deployed as part of an OpenStack cloud and provides increased resilience and
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scale when compared to using local disk storage. This configuration assumes
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that you have already deployed Swift using the swift-proxy and swift-storage
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charms:
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juju deploy glance
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juju add-relation glance keystone
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juju add-relation glance mysql
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juju add-relation glance nova-cloud-controller
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juju add-relation glance swift-proxy
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This configuration can be used to support Glance in HA/Scale-out deployments.
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Ceph backed storage
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===================
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In this configuration, Glance uses Ceph based object storage to provide
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scalable, resilient storage of images. This configuration assumes that you
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have already deployed Ceph using the ceph charm:
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juju deploy glance
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juju add-relation glance keystone
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juju add-relation glance mysql
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juju add-relation glance nova-cloud-controller
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juju add-relation glance ceph
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This configuration can also be used to support Glance in HA/Scale-out
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deployments.
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Glance HA/Scale-out
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===================
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The Glance charm can also be used in a HA/scale-out configuration using
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the hacluster charm:
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juju deploy -n 3 glance
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juju deploy hacluster haglance
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juju set glance vip=<virtual IP address to access glance over>
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juju add-relation glance haglance
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juju add-relation glance mysql
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juju add-relation glance keystone
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juju add-relation glance nova-cloud-controller
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juju add-relation glance ceph|swift-proxy
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In this configuration, 3 service units host the Glance image service;
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API requests are load balanced across all 3 service units via the
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configured virtual IP address (which is also registered into Keystone
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as the endpoint for Glance).
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Note that Glance in this configuration must be used with either Ceph or
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Swift providing backing image storage.
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Contact Information
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-------------------
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Author: Adam Gandelman <adamg@canonical.com>
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Report bugs at: http://bugs.launchpad.net/charms
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Location: http://jujucharms.com
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