Open Stack

Excerpts from Morgan Fainberg's message of 2016-02-17 07:10:34 -0800:
> On Wed, Feb 17, 2016 at 5:55 AM, Sean Dague <sean at dague.net> wrote:
> 
> > On 02/17/2016 08:42 AM, Doug Hellmann wrote:
> > > Excerpts from Victor Stinner's message of 2016-02-17 14:14:18 +0100:
> > >> Le 17/02/2016 13:43, Henry Gessau a écrit :
> > >>> And it looks like eventlet 0.18.3 breaks neutron:
> > >>> https://bugs.launchpad.net/neutron/+bug/1546506
> > >>
> > >> 2 releases, 2 regressions in OpenStack. Should we cap eventlet version?
> > >> The requirement bot can produce patches to update eventlet, patches
> > >> which would run integration tests using Nova, Keystone, Neutron on the
> > >> new eventlet version.
> > >>
> > >> eventlet 0.18.2 broke OpenStack Keystone and OpenStack Nova
> > >> https://github.com/eventlet/eventlet/issues/296
> > >> https://github.com/eventlet/eventlet/issues/299
> > >> https://review.openstack.org/#/c/278147/
> > >> https://bugs.launchpad.net/nova/+bug/1544801
> > >>
> > >> eventlet 0.18.3 broke OpenStack Neutron
> > >> https://github.com/eventlet/eventlet/issues/301
> > >> https://bugs.launchpad.net/neutron/+bug/1546506
> > >>
> > >> FYI eventlet 0.18.0 broke WSGI servers:
> > >> https://github.com/eventlet/eventlet/issues/295
> > >>
> > >> It was followed quickly by eventlet 0.18.2 to fix this issue.
> > >>
> > >> Sadly, it looks like bugfix releases of eventlet don't include a single
> > >> bugfix, but include also other changes. For example, 0.18.3 fixed the
> > >> bug #296 but introduced "wsgi: TCP_NODELAY enabled by default"
> > optimization.
> > >>
> > >> IMHO the problem is not the release manager of eventlet, but more the
> > >> lack of tests on eventlet, especially on OpenStack services.
> > >>
> > >> Current "Continious Delivery"-like with gates do detect bugs, yeah, but
> > >> also block a lot of developers when the gates are broken. It doesn't
> > >> seem trivial to investigate and fix eventlet issues.
> > >>
> > >> Victor
> > >>
> > >
> > > Whether we cap or not, we should exclude the known broken versions.
> > > It looks like getting back to a good version will also require
> > > lowering the minimum version we support, since we have >=0.18.2
> > > now.
> > >
> > > What was the last version of eventlet known to work?
> >
> > 0.18.2 works. On the Nova side we had a failure around unit tests which
> > was quite synthetic that we fixed. I don' know what the keystone issue
> > turned out to be.
> >
> 
> I believe the keystone issue was a test specific issue, not a runtime
> issue. We disabled the test.
> --Morgan

OK. Can someone from the neutron team verify that 0.18.2 works? If so,
we can just exclude 0.18.3 and reset the constraint.

Doug