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OpenStack is a reliable cloud infrastructure. Its mission is to produce the ubiquitous cloud computing platform that will meet the needs of public and private cloud providers regardless of size, by being simple to implement and massively scalable. . OpenStack Compute, codenamed Nova, is a cloud computing fabric controller. In addition to its "native" API (the OpenStack API), it also supports the Amazon EC2 API. . Nova is intended to be modular and easy to extend and adapt. It supports many different hypervisors (KVM and Xen to name a few), different database backends (SQLite, MySQL, and PostgreSQL, for instance), different types of user databases (LDAP or SQL), etc. . This is the package you will install on your storage nodes.
Openstack Nova Volume service provides EBS-like storage to Openstack instances.
This charm will configure Nova volume on a given unit to serve logical volumes over iSCSI via the nova-volume service. All communication between nova-volume and the rest of the Openstack deployment happens over the database and messaging queue thus the charm has two required relations: mysql:shared-db and rabbitmq:amqp.
To deploy along side an existing Openstack deployment, simply:
juju deploy --repository=. local:nova-volume juju add-relation mysql nova-volume juju add-relation rabbitmq nova-volume
Assuming the rest of the Openstack cloud is functioning properly, the volume service will come online.
Overview of config options and corresponding defaults:
nova-release: distro
From which installation source to install the required Nova packages. The default is to install from the Ubuntu archive. You may also specify one of the following: - trunk: upstream trunk PPA (ppa:nova-core/trunk) - milestone: upstream milestone PPA (ppa:nova-core/milestone) - milestone-proposed: upstream milestone PPA (ppa:nova-core/milestone-proposed) - A valid PPA with in LP PPA format: ppa:myaccount/ppaname - A custom URL formated ala: 'deb http://host/ubuntu oneiric main' You may append a GPG Key ID to the end of the line after a |, and the charm will attempt to import it from keyserver.ubuntu.com.
block-device: sdb
Nova Volume requires a volume group be created from which to carve out logical volumes. This block device will be initialized as the physical volume that backs this volume group.
You may use either /dev/, , or /path/to/file[|size]. In the third format, '|size' is optional, defaulting to 5G. Example: "/var/lib/nova-volumes/my-vol.img|2G". The size parameter is passed to 'truncate --size'
volume-group: nova-volumes
The volume group to create and use when creating new volumes.
overwrite: false
By default, LVM2 and the charm will refuse to initialize a block device that has existing LVM signatures or is mounted. If this is set to true, the charm will attempt to unmount the block device if is mounted and wipe any traces of LVM from it, prior to initializing it as a new volume group. BEWARE
rabbit-user: nova
Username with which to request access to the messaging queue.
rabbit-vhost: nova
Name of the RabbitMQ virtual host to access. This must be the same across all Nova components.
db-user: nova
Database user with which to request access to the shared MySQL database.
nova-db: nova
Database to request access to. This must be the same across all Nova components.