Whoami

• OpenStack Infrastructure Team Founder
• Foundation Board Member
• Technical Committee Member
• HP Cloud Services

Disclaimer

• Any views expressed in this talk are my own

Overview

• History
• Lessons Learned
• Upstreams

OpenStack is cloud Software

• Rackspace and NASA
• ex-Ubuntu and ex-Drizzle

Modeled after Ubuntu

• 6 month cadence
• tied to ubuntu release cadence
• Design Summits
• versioning scheme
• bzr/launchpad
• Gated Trunk from Drizzle

Gating on Packaged Depends

• "All project depends must be in Ubuntu"
• Carried a depends PPA in Launchpad
• Build slave ran "apt-get build-dep nova"
• Ensured we wouldn't screw up Ubuntu
• PPA for Nova and Swift

Pain Points

• Adding new depends == editing debian packaging
• Duplication - depends already in tree
• Carry backport patched depends (libvirt, eventlet)

Time Passes

• This lasted for a year
• Ubuntu Dropped Eucalyptus for OpenStack

Foreshaddowing

• Stopped using packages on jenkins slaves
• Depends use PyPI and virtualenv

distro/upstream disconnect

• Upstream cares about latest upstream on all stable OS releases
• Distro cares about stable upstream on latest/pre-release OS

Inciting Incident

• Project moved to git
• Started adding install-based integration testing

Integration testing

• Create package(s)
• Spin up new machine
• apt-get install packages
• Test results

Barriers

• Using PPA - async
• Packaging branches in bzr
• Multi-release packaging patches

The pitch

• Move packaging branches to gerrit
• Spin up our own apt repo
• Build packages synchronously
• Support multi-version releases

A Phone Call

• "Ubuntu just called us and screamed for an hour"

UDS Essex

• Ubuntu and Redhat requested we stop making packages
• Rackspace released devstack

Lessons Learned

• Be The Best Upstream First
• Make actual releases

Interesting developments

• RedHat has shown up with tons of devs
• Ubuntu does CI testing of OpenStack on their own
• We've dropped debian-based pre-versioning
• We're adding RHEL testing support with RedHat's help
• Talk to lifeless about diskimage-builder and TripleO

The Upstream Viewpoint

• Upstreams care about latest upstream version on stable distro
• So do users

Ubuntu Cloud Archive

• Canonical/Ubuntu providing an APT repo that has backported OpenStack
• Those pesky matrixes of support really are hard!

Each App is a Distro

• OpenStack release are de facto distros
• Each depenednet library is a part of OpenStack
• Upstream releases of libraries also need testing

Language packaging centric views

• Python - PyPI/pip
• Java - maven
• Ruby - gem
• Perl - CPAN

Images

• TripleO team is investigating images-as-app-delivery
• EC2 VAR ecosystem has been doing this for years
• What does this mean for distros?

Distro as core

• What if the Distro was only there for core things?
• What if Distro packaging focused on C/C++?
• What if Distro packaging played nice with python/perl/java/ruby?
• What if apps on distros ran in their own container/VM?

Thanks!

All repos are at: https://github.com/openstack-infra

These slides available at: https://openstack-ci.github.com/publications