Open Stack

Excerpts from Graham Hayes's message of 2018-05-08 17:01:36 +0100:
> On 08/05/18 16:53, Doug Hellmann wrote:
> > Excerpts from Graham Hayes's message of 2018-05-08 16:28:46 +0100:
> >> On 08/05/18 16:09, Zane Bitter wrote:
> >>> On 30/04/18 17:16, Ben Nemec wrote:
> >>>>> Excerpts from Doug Hellmann's message of 2018-04-25 16:54:46 -0400:
> >>>>>> 1. Fix oslo.service functional tests -- the Oslo team needs help
> >>>>>>     maintaining this library. Alternatively, we could move all
> >>>>>>     services to use cotyledon (https://pypi.org/project/cotyledon/).
> >>>
> >>> I submitted a patch that fixes the py35 gate (which was broken due to
> >>> changes between CPython 3.4 and 3.5), so once that merges we can flip
> >>> the gate back to voting:
> >>>
> >>> https://review.openstack.org/566714
> >>>
> >>>> For everyone's awareness, we discussed this in the Oslo meeting today
> >>>> and our first step is to see how many, if any, services are actually
> >>>> relying on the oslo.service functionality that doesn't work in Python
> >>>> 3 today.  From there we will come up with a plan for how to move forward.
> >>>>
> >>>> https://bugs.launchpad.net/manila/+bug/1482633 is the original bug.
> >>>
> >>> These tests are currently skipped in both oslo_service and nova.
> >>> (Equivalent tests were removed from Neutron and Manila on the principle
> >>> that they're now oslo_service's responsibility.)
> >>>
> >>> This appears to be a series of long-standing bugs in eventlet:
> >>>
> >>> Python 3.5 failure mode:
> >>> https://github.com/eventlet/eventlet/issues/308
> >>> https://github.com/eventlet/eventlet/issues/189
> >>>
> >>> Python 3.4 failure mode:
> >>> https://github.com/eventlet/eventlet/issues/476
> >>> https://github.com/eventlet/eventlet/issues/145
> >>>
> >>> There are also more problems coming down the pipeline in Python 3.6:
> >>>
> >>> https://github.com/eventlet/eventlet/issues/371
> >>>
> >>> That one is resolved in eventlet 0.21, but we have that blocked by
> >>> upper-constraints:
> >>> http://git.openstack.org/cgit/openstack/requirements/tree/upper-constraints.txt#n135
> >>>
> >>>
> >>> Given that the code in question relates solely to standalone WSGI
> >>> servers with SSL and everything should have already migrated to Apache,
> >>> and that the upstream is clearly overworked and unlikely to merge fixes
> >>> any time soon (plus we would have to deal with the fallout of moving the
> >>> upper constraint), I agree that it would be preferable if we could just
> >>> ditch this functionality.
> >>
> >> There are a few projects that have not migrated, and some that have
> >> issues running in non standalone WSGI mode (due, ironically to eventlet)
> >>
> >> We should probably get people to run these projects behind an reverse
> >> proxy, and terminate SSL there, but right now we don't have that
> >> documented.
> > 
> > Do you know which projects?
> 
> I know of 2:
> 
> Designate - mainly due to the major lack of resources available during
> the uwsgi goal period, and the level of work needed to unravel our
> tooling to support it.
> 
> Glance - Has issues with image upload + uwsgi + eventlet [1]
> 
> I am sure there are probably others, but I know of these 2.
> 
> [1] https://docs.openstack.org/releasenotes/glance/unreleased.html#b1

OK, so we need to put these things on the red flags list for moving to
Python 3. I've updated the status for oslo.service, designate, and
glance in https://wiki.openstack.org/wiki/Python3 to reflect that.

Doug