An overview of OpenStack Liberty

OpenStack,, Cloud,, Public, Cloud,, Private, Cloud


OpenStack Release Names

Liberty is the 12th major release of OpenStack and below are the list of all the releases so far.

  • Austin: The first design summit took place in Austin, TX
  • Bexar: San Antonio is located in Bexar county
  • Cactus: Cactus is a city in Texas
  • Diablo: Diablo is a city in the bay area near Santa Clara
  • Essex: Essex is a city near Boston
  • Folsom: Folsom is a city near San Francisco
  • Grizzly: Grizzly is an element of the state flag of California
  • Havana: Havana is an unincorporated community in Oregon
  • Icehouse: Ice House is a street in Hong Kong
  • Juno: Juno is a locality in Georgia
  • Kilo: Paris (Sèvres, actually, but that’s close enough) is home to the Kilogram
  • Liberty: Liberty is a village in the Canadian province of Saskatchewan

PS: Next release will be called as Mitaka. It’s named after the town located in the Tokyo metro area known for Inokashira park and the Ghibli museum

Lets welcome OpenStack Liberty

OpenStack Liberty is the 12th release of OpenStack and was released on October 15 2015.

Lets have a closer look at the major focus areas of Liberty before we dwell into individual projects

Enhanced Manageability

Liberty includes common library adoption and better configuration management, as well as RBAC - Role Based Access Control for the Heat orchestration and Neutron networking projects, enabling operators to more finely tune security settings.

Simplified Scalability

There has been Performance and stability improvements in OpenStack in general, and the Horizon dashboard, Neutron networking, Cinder block storage, and Nova compute services in particular.

Nova Cells v2, which will eventually enable much larger multi-location compute deployments also makes its debut in Liberty and let me discuss this is detail later,


While OpenStack has reduced the Core components that must be supported, starting from Liberty, it is also moving in the direction of enabling the support of multiple other technologies under the Big Tent structure.

Lets look at some of the Major Changes in the some of the Individual Project (Compoents) of OpenStack Liberty

  • Horizon:
    • New Launch Instance Dialog
    • Network Topology Visibility
    • IDP-specific WebSSO (Hybrid Cloud Management)
  • Nova:
    • NFV (Near Functions Virtualization)
    • Cells Management
  • Neutron:
    • Better control over security and bandwidth
    • Neutron now does IPv6 prefix delegation, enabling automatic assignment of CIDRs to submits and making setting up a network much easier.
    • Administrators can now control bandwidth by assigning quotas not just to projects, but to individual VMs as well.
    • RBAC (Role Based Access Control)
    • The LBaaS reference implementation is now based on an operator-grade load balancer platform (Octavia)
    • Pluggable IP address management (PIAM) is now available, enabling third-party IPAM.
  • KeyStone:
    • Greater control over Identity Providers (IDP) through control WebSSO for individual IDP backends.
    • Different Clouds, Same Platform
  • Swift:
    • Better performance when there are slow drives, as well as removing latency spikes and limiting data movement during cluster management.
    • Operators can now use ring-builder-analyzer to test out different ring operations quickly.
    • Users can now set “per object” metadata for exploding archives.
  • Cinder:
    • Quota enforcement in hierarchical projects
    • Commonly used images can now be cached, improving performance
  • Glance:
    • Glance now enables users to sign an image using their private key so that its integrity can be verified to be sure no malicious code has been inserted.
    • Glance can now be used from multiple networks with an S3 backend over an HTTP proxy.
  • Ceilometer:
    • We can now trigger an alarm based on incoming events in real time.
    • Most meters can now be created with a yaml file rather than python code.
    • Asynchronous handling of new measures in Gnocchi.
    • Ceilometer can now send metrics to the Gnocchi time series data storage system, which can also be used to visualize performance with Grafana.
  • HEAT:
    • Heat can now control Keystone endpoints.

Hope this was informative and please keep reading…

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