On 06/26/2018 11:18 AM, Ghanshyam Mann wrote:
Hello Everyone,
In Queens cycle, community goal to split the Tempest Plugin has been completed
[1] and i think almost all the projects have separate repo for tempest plugin
[2]. Which means each tempest plugins are being separated from their project
release model. Few projects have started the independent release model for
their plugins like kuryr-tempest-plugin, ironic-tempest-plugin etc [3]. I
think neutron-tempest-plugin also planning as chatted with amotoki.
There might be some changes in Tempest which might not work with older version
of Tempest Plugins. For example, If I am testing any production cloud which
has Nova, Neutron, Cinder, Keystone , Aodh, Congress etc i will be using
Tempest and Aodh's , Congress's Tempest plugins. With Independent release model
of each Tempest Plugins, there might be chance that the Aodh's or Congress's
Tempest plugin versions are not compatible with latest/known Tempest versions.
It will become hard to find the compatible tag/release of Tempest and Tempest
Plugins or in some cases i might need to patch up the things.
FWIW this is solved by stable branches for all other projects. If we cannot keep
Tempest compatible with all supported branches, we should back off our decision
to make it branchless. The very nature of being branchless implies being
compatible with all supported releases.
During QA feedback sessions at Vancouver Summit, there was feedback to
coordinating the release of all Tempest plugins and Tempest [4] (also amotoki
talked to me on this as neutron-tempest-plugin is planning their first
release). Idea is to release/tag all the Tempest plugins and Tempest together
so that specific release/tag can be identified as compatible version of all the
Plugins and Tempest for testing the complete stack. That way user can get to
know what version of Tempest Plugins is compatible with what version of Tempest.
For above use case, we need some coordinated release model among Tempest and all the Tempest
Plugins. There should be single release of all Tempest Plugins with well defined tag whenever any
Tempest release is happening. For Example, Tempest version 19.0.0 is to mark the "support of
the Rocky release". When releasing the Tempest 19.0, we will release all the Tempest plugins
also to tag the compatibility of plugins with Tempest for "support of the Rocky release".
One way to make this coordinated release (just a initial thought):
1. Release Each Tempest Plugins whenever there is any major version release of
Tempest (like marking the support of OpenStack release in Tempest, EOL of
OpenStack release in Tempest)
1.1 Each plugin or Tempest can do their intermediate release of minor
version change which are in backward compatible way.
1.2 This coordinated Release can be started from latest Tempest Version
for simple reading. Like if we start this coordinated release from Tempest
version 19.0.0 then,
each plugins will be released as 19.0.0 and so on.
Giving the above background and use case of this coordinated release,
A) I would like to ask each plugins owner if you are agree on this coordinated
release? If no, please give more feedback or issue we can face due to this
coordinated release.
Disclaimer: I'm not the PTL.
Similarly to Luigi, I don't feel well about forcing a plugin release at the same
time as a tempest release, UNLESS tempest folks are going to coordinate their
releases with all how-many-do-we-have plugins. What I'd like to avoid is cutting
a release in the middle of a patch chain or some refactoring just because
tempest happened to have a release right now.
If we get the agreement from all Plugins then,
B) Release team or TC help to find the better model for this use case or
improvement in above model.
C) Once we define the release model, find out the team owning that release
model (there are more than 40 Tempest plugins currently) .
NOTE: Till we decide the best solution for this use case, each plugins can
do/keep doing their plugin release as per independent release model.
[1] https://governance.openstack.org/tc/goals/queens/split-tempest-plugins.html
[2] https://docs.openstack.org/tempest/latest/plugin-registry.html
[3] https://github.com/openstack/kuryr-tempest-plugin/releases
https://github.com/openstack/ironic-tempest-plugin/releases
[4] http://lists.openstack.org/pipermail/openstack-dev/2018-June/131011.html
-gmann
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