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.
- miscellaneous ›
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.
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
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
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
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.
- (string) Comma-separated list of key=value pairs to be added to glance-api.conf where 'value' may itself be a comma-separated list of values to be assigned to the 'key'.
- (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).
- (string) Glance database name.
- (string) Database username
- (boolean) Enable debug logging
- (string) Default network interface on which HA cluster will bind to communication with the other members of the HA Cluster.
- (int) Default multicast port number that will be used to communicate between HA Cluster nodes.
- (int) Client timeout configuration in ms for haproxy, used in HA configurations. If not provided, default value of 30000ms is used.
- (int) Server timeout configuration in ms for haproxy, used in HA configurations. If not provided, default value of 30000ms is used.
- (string) Used by the nrpe-external-master subordinate charm. A string that will be prepended to instance name to set the host name in nagios. So for instance the hostname would be something like: juju-myservice-0 If you're running multiple environments with the same services in them this allows you to differentiate between them.
- (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.
- (string) The IP address and netmask of the OpenStack Admin network (e.g., 192.168.0.0/24) . This network will be used for admin endpoints.
- (string) The IP address and netmask of the OpenStack Internal network (e.g., 192.168.0.0/24) . This network will be used for internal endpoints.
- (string) The IP address and netmask of the OpenStack Public network (e.g., 192.168.0.0/24) . This network will be used for public endpoints.
- (boolean) If True enables IPv6 support. The charm will expect network interfaces to be configured with an IPv6 address. If set to False (default) IPv4 is expected. . NOTE: these charms do not currently support IPv6 privacy extension. In order for this charm to function correctly, the privacy extension must be disabled and a non-temporary address must be configured/available on your network interface.
- (string) Username to request access on rabbitmq-server.
- (string) RabbitMQ virtual host to request access on rabbitmq-server.
- (string) OpenStack Region
- (string) Comma-separated list of key=value pairs to be added to glance-registry.conf where 'value' may itself be a comma-separated list of values to be assigned to the 'key'.
- (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.
- (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).
- (string) SSL key to use with certificate specified as ssl_cert.
- (boolean) If set to True, supporting services will log to syslog.
- (boolean) Enable verbose logging
- (string) Virtual IP(s) to use to front API services in HA configuration. . If multiple networks are being used, a VIP should be provided for each network, separated by spaces.
- (int) Default CIDR netmask to use for HA vip when it cannot be automatically determined.
- (string) Default network interface to use for HA vip when it cannot be automatically determined.
- (int) The CPU core multiplier to use when configuring worker processes for Glance. By default, the number of workers for each daemon is set to twice the number of CPU cores a service unit has.