glance #3

  • By landscape
  • Latest version (#3)
  • trusty
  • Stable
  • Edge

Description

The Glance project provides an image registration and discovery service
(Parallax) and an image delivery service (Teller). These services are used
in conjunction by Nova to deliver images from object stores, such as
OpenStack's Swift service, to Nova's compute nodes.


Overview

This charm provides the Glance image service for OpenStack. It is intended to
be used alongside the other OpenStack components, starting with the Essex
release in Ubuntu 12.04.

Usage

Glance may be deployed in a number of ways. This charm focuses on 3 main
configurations. All require the existence of the other core OpenStack
services deployed via Juju charms, specifically: mysql, keystone and
nova-cloud-controller. The following assumes these services have already
been deployed.

Local Storage

In this configuration, Glance uses the local storage available on the server
to store image data:

juju deploy glance
juju add-relation glance keystone
juju add-relation glance mysql
juju add-relation glance nova-cloud-controller

Swift backed storage

Glance can also use Swift Object storage for image storage. Swift is often
deployed as part of an OpenStack cloud and provides increased resilience and
scale when compared to using local disk storage. This configuration assumes
that you have already deployed Swift using the swift-proxy and swift-storage
charms:

juju deploy glance
juju add-relation glance keystone
juju add-relation glance mysql
juju add-relation glance nova-cloud-controller
juju add-relation glance swift-proxy

This configuration can be used to support Glance in HA/Scale-out deployments.

Ceph backed storage

In this configuration, Glance uses Ceph based object storage to provide
scalable, resilient storage of images. This configuration assumes that you
have already deployed Ceph using the ceph charm:

juju deploy glance
juju add-relation glance keystone
juju add-relation glance mysql
juju add-relation glance nova-cloud-controller
juju add-relation glance ceph

This configuration can also be used to support Glance in HA/Scale-out
deployments.

Glance HA/Scale-out

The Glance charm can also be used in a HA/scale-out configuration using
the hacluster charm:

juju deploy -n 3 glance
juju deploy hacluster haglance
juju set glance vip=<virtual IP address to access glance over>
juju add-relation glance haglance
juju add-relation glance mysql
juju add-relation glance keystone
juju add-relation glance nova-cloud-controller
juju add-relation glance ceph|swift-proxy

In this configuration, 3 service units host the Glance image service;
API requests are load balanced across all 3 service units via the
configured virtual IP address (which is also registered into Keystone
as the endpoint for Glance).

Note that Glance in this configuration must be used with either Ceph or
Swift providing backing image storage.

Contact Information

Author: Adam Gandelman adamg@canonical.com
Report bugs at: http://bugs.launchpad.net/charms
Location: http://jujucharms.com

Configuration

ssl_key
(string) SSL key to use with certificate specified as ssl_cert.
openstack-origin
(string) Repository from which to install. May be one of the following: distro (default), ppa:somecustom/ppa, a deb url sources entry, or a supported Cloud Archive release pocket. Supported Cloud Archive sources include: cloud:precise-folsom, cloud:precise-folsom/updates, cloud:precise-folsom/staging, cloud:precise-folsom/proposed. Note that updating this setting to a source that is known to provide a later version of OpenStack will trigger a software upgrade.
distro
ceph-osd-replication-count
(int) This value dictates the number of replicas ceph must make of any object it stores within the images rbd pool. Of course, this only applies if using Ceph as a backend store. Note that once the images rbd pool has been created, changing this value will not have any effect (although it can be changed in ceph by manually configuring your ceph cluster).
2
verbose
(boolean) Enable verbose logging
database
(string) Glance database name.
glance
region
(string) OpenStack Region
RegionOne
rabbit-user
(string) Username to request access on rabbitmq-server.
glance
ssl_ca
(string) SSL CA to use with the certificate and key provided - this is only required if you are providing a privately signed ssl_cert and ssl_key.
vip
(string) Virtual IP to use to front Glance API in ha configuration
rabbit-vhost
(string) RabbitMQ virtual host to request access on rabbitmq-server.
openstack
vip_iface
(string) Network Interface where to place the Virtual IP
eth0
ssl_cert
(string) SSL certificate to install and use for API ports. Setting this value and ssl_key will enable reverse proxying, point Glance's entry in the Keystone catalog to use https, and override any certficiate and key issued by Keystone (if it is configured to do so).
ha-mcastport
(int) Default multicast port number that will be used to communicate between HA Cluster nodes.
5402
debug
(boolean) Enable debug logging
use-syslog
(boolean) If set to True, supporting services will log to syslog.
database-user
(string) Database username
glance
vip_cidr
(int) Netmask that will be used for the Virtual IP
24
ha-bindiface
(string) Default network interface on which HA cluster will bind to communication with the other members of the HA Cluster.
eth0