[openstack-dev] [tc][ptl][keystone] Proposal to split authentication part out of Keystone to separated project

Lance Bragstad lbragstad at gmail.com
Thu Apr 7 13:22:27 UTC 2016

In response to point 2.2, the progress with Fernet in the last year has
exposed performance pain points in keystone. Finding sensible solutions for
those issues is crucial in order for people to adopt Fernet. In Mitaka we
had a lot of discussion that resulted in landing several performance
related patches.

As of today, we're already focusing on scalability, performance, and
simplicity. I'm afraid a project split would only delay the work we're
doing right now.

On Wed, Apr 6, 2016 at 5:34 PM, Morgan Fainberg <morgan.fainberg at gmail.com>

> On Wed, Apr 6, 2016 at 6:29 PM, David Stanek <dstanek at dstanek.com> wrote:
>> On Wed, Apr 6, 2016 at 3:26 PM Boris Pavlovic <bpavlovic at mirantis.com>
>> wrote:
>>> 2) This will reduce scope of Keystone, which means 2 things
>>> 2.1) Smaller code base that has less issues and is simpler for testing
>>> 2.2) Keystone team would be able to concentrate more on fixing
>>> perf/scalability issues of authorization, which is crucial at the moment
>>> for large clouds.
>> I'm not sure that this is entirely true. If we truly just split up the
>> project, meaning we don't remove functionality, then we'd have the same
>> number of bugs and work. It would just be split across two projects.
>> I think the current momentum to get out of the authn business is still
>> our best bet. As Steve mentioned this is ongoing work.
>> -- David
> What everyone else said... but add in the need then to either pass the
> AuthN over to the Assignment/AuthZ api or bake it in (via apache module?)
> and we are basically where we are now.
> Steve alluded to splitting out the authentication bit (but not to a new
> service), the idea there is to make it so AuthN is not part of the CRUD
> interface of the server. All being said, AuthN and AuthZ are going to be
> hard to split into two separate services and with exception of the
> unfounded "scope" benefit, we already can handle most of what you've
> proposed with zero changes to Keystone.
> Cheers,
> --Morgan
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