OpenStack is an iaas provider completely developed by the community around it. In order to keep things organized, it takes advantage of many tools and multiple infrastructures for c-i, scm, core review etc. This talk aims to share the details behind OpenStack, how its development is driven, and how it's kept organized.

1. OpenStack: Community driven development, #ForReal
OpenStack
Services
Community
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

2. OpenStack: Community driven development, #ForReal
Outline
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OpenStack (Tiny Intro)
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Services and Tools Used
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Dev oriented community aspects
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Takeaways
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

3. OpenStack: Community driven development, #ForReal
About Me
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Red Hatter
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Open Source contributor since forever
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Member of Mongodb's Master Group
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Cloud Lover
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@flaper87 (mostly everywhere)
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

4. OpenStack: Community driven development, #ForReal
What is OpenStack?
Marketing point of view
OpenStack is a cloud operating system that controls large pools of
compute, storage, and networking resources throughout a datacenter, all
managed through a dashboard that gives administrators control while
empowering their users to provision resources through a web interface.
Devs' point of view
Really cool, open source, “Infrastructure as a
Service” (IaaS) provider.
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

5. OpenStack: Community driven development, #ForReal
Loosely Coupled fashion
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Nova ● Cinder Recently Graduated
Quantum
● Ceilometer
Glance
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● Heat
● Horizon
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Swift
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

6. OpenStack: Community driven development, #ForReal
Development Tools
Gerrit (Code Review)
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

7. OpenStack: Community driven development, #ForReal
About Github
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Public Repository
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Forget about “git push”
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Stable Branches for server projects
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No special features used
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Not even a good README
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

8. OpenStack: Community driven development, #ForReal
About launchpad
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Bugs (features?) reports
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Blueprints
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Milestones
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OpenID
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Core Groups
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

9. OpenStack: Community driven development, #ForReal
About ...
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Continues Breakage (Integration)
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Commit gates on unit tests
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(pre|post)­merge tests
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He loves to ­1
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

10. OpenStack: Community driven development, #ForReal
About Gerrit
Because, Code Review Matters
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

11. OpenStack: Community driven development, #ForReal
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

12. OpenStack: Community driven development, #ForReal
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

13. OpenStack: Community driven development, #ForReal
Review Process
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Patch Sets
– Unittests for each (including style checks)
– Unittests and SmokeTests pre/post merge
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Reviewers
– Anyone can ±1
– Core members can ±2
– Only core members can approve
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

14. OpenStack: Community driven development, #ForReal
Dev Workflow
git clone
git co master git pull –rebase ...
git co ­b (bp|bug)/<id>
Looks Good
git branch ­D (bp|bug)/<id>
Fix / Code You wish Approved?
git commit (­­amend) Light some candles git review
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

15. OpenStack: Community driven development, #ForReal
About the Community
Openness?
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Open Design
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Open Development
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Open Community
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

16. OpenStack: Community driven development, #ForReal
Leadership
Project Technical Lead (PTL)
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1 For each project
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It's not a dictator
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Elected by the Active Technical Contributors to that project
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

17. OpenStack: Community driven development, #ForReal
Contributors
8516 People
87 countries
(keeps growing)
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

18. OpenStack: Community driven development, #ForReal
No rules, just “standards”
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Non Opinionated
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Apache License 2.0
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HACKING Files
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GitCommitMessages
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

19. OpenStack: Community driven development, #ForReal
Release Cycle
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6 monthly to a stable branch (8­10 weekly fix releases after this)
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No upstream packaging for Linux distributions
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Design Summit after each
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Alphabetically ordered names
– Austin – Essex
– Bexar – Folsom
– Cactus – Grizzly (Apr 2013)
– Diablo – Havana (Sep 2013)
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

20. OpenStack: Community driven development, #ForReal
Contribute Back
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Code ●
Bug squashing days
IRC
Distro test days
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Mailing Lists
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Summits
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Documentation
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

21. OpenStack: Community driven development, #ForReal
“Ultimately, enterprises don't care about community and
openness unless the product itself is rock solid.”
http://readwrite.com/2013/03/19/amazon­king­of­cloud­computing­forever
… but we DO!!!
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

22. OpenStack: Community driven development, #ForReal
Takeaways
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Community Matters and Devs like to be part of it
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Define your standards
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Do reviews
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Drop your ego
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/

23. OpenStack: Community driven development, #ForReal
Q & A
Codemotion ­ Rome, 2013
Flavio Percoco – flavio@redhat.com ­ Red Hat, Inc
http://creativecommons.org/licenses/by­nc­sa/3.0/