Zun (ex. Higgins) is a Container Management service for OpenStack. It aims to provide an OpenStack API for launching and managing containers backed by different container technologies.
- 2016-04-20 According to the discussion in the OpenStack Austin design summit, we are going to create a new project (which is Higgins) for providing OpenStack container service. The Magnum project (another OpenStack project for containers) will focus on deployment and management of Container Orchestration Engines (COEs).
- 2016-06-07 We renamed the project from "Higgins" to "Zun"
- Launchpad Project Pages
- Mailing List
- Code Repository
- Design Spec
- https://review.openstack.org/#/c/365754/ The sandbox approach
Our developers use IRC in
#openstack-zun on freenode for development discussion.
The Zun team holds public meetings. We meet in
#openstack-meeting on Tuesday on the following schedule:
|2017-08-08||UTC 0300 Tuesday||http://www.timeanddate.com/worldclock/fixedtime.html?msg=Zun+Team+Meeting&iso=20170808T03|
|2017-08-15||UTC 0300 Tuesday||http://www.timeanddate.com/worldclock/fixedtime.html?msg=Zun+Team+Meeting&iso=20170815T03|
|2017-08-22||UTC 0300 Tuesday||http://www.timeanddate.com/worldclock/fixedtime.html?msg=Zun+Team+Meeting&iso=20170822T03|
Agenda for 2017-08-08 0300 UTC
- Roll Call
- We will cut a pike release for Zun server soon (within one week or two)
- Review Action Items
- hongbin ask nova core about how to deal with api microversion
- hongbin pose an architecture diagram at the zun wiki page (DONE)
- Cinder integration (hongbin)
- #link https://blueprints.launchpad.net/zun/+spec/direct-cinder-integration Direct Cinder integration
- #link https://blueprints.launchpad.net/zun/+spec/cinder-zun-integration Cinder integration via Fuxi
- Introduce container composition (kevinz)
- #link https://review.openstack.org/#/c/437759/ The design spec
- #link https://etherpad.openstack.org/p/zun-container-composition The etherpad
- NFV use cases (lakerzhou)
- Zun connector for k8s
- Open Discussion
- Make infra container optional
- Add documents for Zun rest API
- Zun API: Process REST requests and validate inputted parameters.
- Zun Compute: Launch containers and manage compute resources in localhost.
- Keystone: Authenticate incoming requests.
- Neutron: Provide networking for containers.
- Glance: An option to store container images (another option is DockerHub).
- Kuryr: A Docker network plugin for connecting containers to neutron networks.
Frequently Asked Questions
1) What is the relationship between Zun and Magnum?
Zun and Magnum are two independent projects. Zun aims to provide APIs to manage containers, while Magnum provides APIs to provision and manage Container Orchestration Engine (COEs), such as Kubernetes.
2) Who is Zun for? In comparison, who is Magnum for?
Zun is for users who want to create and manage containers as OpenStack-managed resource. Containers managed by Zun are supposed to be integrated well with other OpenStack resources, such as Neutron network and Cinder volume. Users are provided a simplified APIs to manage containers without the need to explore the complexities of different container technologies. Magnum is for users who want a self-service solution to provision and manage a Kubernetes (or other COEs) cluster.
3) What is the difference between Zun and nova-docker?
Nova-docker allows accessing containers via Nova's API, while Zun is not bounded by Nova's API.
4) Does Zun compete with Kubernetes (or other COEs)?
We do not intend to compete with Kubernetes or other COEs. In fact, Kubernetes provides Container Orchestration and many other advanced features (i.e. keep container alive, load balancing, etc.). In comparison, Zun will start with basic container operations (i.e. CRUD) and focus on tight integration with OpenStack.