- New Charm Features
- Deprecation Notices
- Bugs Fixed
The 15.04 OpenStack Charm release includes updates for the following charms:
These release notes complement the 15.01 charm release notes in terms of charm features delivered since the last Ubuntu release.
New Charm Features
OpenStack Kilo support for 14.04 and 15.04
All OpenStack charms now support deployment of OpenStack 2015.1 (Kilo) on Ubuntu 14.04 LTS and Ubuntu 15.04; this support includes the following charms:
To deploy OpenStack Kilo on Ubuntu 14.04, use the 'openstack-origin' configuration option, for example:
cat > config.yaml << EOF nova-cloud-controller: openstack-origin: cloud:trusty-kilo EOF juju deploy --config config.yaml nova-cloud-controller
OpenStack Kilo is provided as the default OpenStack release on Ubuntu 15.04 so no additional configuration is required in 15.04 deployments.
NOTE: In order to use Juju with Ubuntu 15.04, you'll have to use the 1.23 release which is currently in pre-release testing.
Neutron - Distributed Virtual Router
The neutron-api charm now has a enable-dvr option to turn on Distributed Virtual Routing. When this is enabled each Compute Node will provide North/South DNAT (floating IP traffic) as well as East/West L3 forwarding (traffic between VM in the same tenant), North/South SNAT still goes through the neutron gateway.
- Compute having external connectivity
- l2-population is enabled
Openstack release >= Juno
- enable-l3ha is disabled
- Overlay network type is vxlan
More details of DVR can be found here
Neutron - Router High Availability
The neutron-api charm now has a enable-l3ha option. If this option is enabled then subsequent routers are created with the 'ha' flag set. This will enable automatic failover of a router should the gateway unit that it resides on fail.
- More than 1 neutron gateway node
- l2-population is disabled
Openstack release >= Juno
- enable-dvr is disabled
- Overlay network type is vlan, gre or vxlan
More details on L3 HA can be found Here
Percona Cluster - Improved HA failure detection
The percona-cluster charm now ensures that the access Virtual IP is always co-located with an active, up-to-date instance of Percona XtraDB Cluster.
The Nova and Neutron charms now provide initial support use of 0MQ as an alternative to RabbitMQ for messaging; this is only supported with OpenStack Kilo or later.
To deploy Nova and Neutron with 0MQ, make use of the new openstack-zeromq charm (sample subset of juju commands):
juju deploy redis-server juju deploy openstack-zeromq juju add-relation redis-server openstack-zeromq for svc in nova-cloud-controller nova-compute neutron-api neutron-openvswitch quantum-gateway; do juju deploy $svc juju add-relation $svc openstack-zeromq done
At this point in time 0MQ should be considered for testing only. Further work is expected both upstream in OpenStack and across the OpenStack charm set during the next development cycle.
Deployment from source
The following charms now have support for deploying OpenStack directly from git repositories:
This feature is enabled by using the new 'openstack-origin-git' configuration option; this can be used to configure a minimal or expanded list of repositories to collate and install - see the README in each charm for specific details.
Further deploy from source enablement is expected during the 15.07 charm development cycle.
The Openstack charms can now be related to the nrpe charm to provide basic Nagios monitoring. To allow alert thresholds to be tweaked per service deploy each a nrpe subordinate charm per Openstack Service. e.g.
juju deploy nrpe nrpe-glance juju deploy nrpe nrpe-cinder juju deploy nagios juju deploy glance juju deploy cinder juju add-relation nrpe-glance glance juju add-relation nrpe-glance nagios juju add-relation nrpe-cinder cinder juju add-relation nrpe-cinder nagios
The thresholds can then tweaked:
juju set nrpe_glance "load=-w 2,2,2 -c 4,4,4" juju set nrpe_cinder "load=-w 4,4,4 -c 10,10,10"
15.04 is the last release of the 'quantum-gateway' charm; for 15.07 it will be renamed 'neutron-gateway'. Migration instructions will be provided for 15.07 release.
MySQL HA with Ceph
The original HA implementation of OpenStack used the MySQL charm in-conjunction with Ceph to provide a traditional active/passive shared block device HA mysql option.
Percona XtraDB Cluster, as provided by the percona-cluster charm, provides an active/active MySQL configuration with no requirement for a shared block device.
Users of the original MySQL HA option should migrate to a Percona XtraDB Cluster deployment between now and the 15.10 charm release, where support for MySQL with Ceph will be removed.
hacluster - default transport
For the 15.04 charm release, the hacluster charm will continue to use multicast as its default transport option for cluster communications.
Unicast is generally more universally usable across all Juju providers - we'll be switching the default for 15.07 including automatic migration and re-configuration of existing multicast clusters. Instructions will also be provided for users who wish to continue to use the multicast transport option.
Deployments without using the neutron-api charm
Management of neutron config and services will be removed from any nova-* charms. This means that the neutron-api principle charm needs to be deployed to run the neutron-server service and if openvswitch is being used then neutron-openvswitch subordinate charm needs to deployed and attached to the nova-compute charm. nova-compute now has an option called manage-neutron-plugin-legacy-mode. The default value for this option is True but as of 15.07 this will switch to False which will disable the management of neutron services.
For the full list of bugs resolved for the 15.04 release please refer to https://launchpad.net/charms/+milestone/15.04