Open Stack

This is all merged now. If you run into any issues with real WSGI
running, please poke up in #openstack-qa and we'll see what we can to to
get things ironned out.

	-Sean

On 04/18/2017 07:19 AM, Sean Dague wrote:
> Ok, the patch series has come together now, and
> https://review.openstack.org/#/c/456344/ remains the critical patch.
> 
> This introduces a new global config option: "WSGI_MODE", which will be
> either "uwsgi" or "mod_wsgi" (for the transition).
> 
> https://review.openstack.org/#/c/456717/6/lib/placement shows what it
> takes to make something that's current running under mod_wsgi to run
> under uwsgi in this model.
> 
> The intent is that uwsgi mode becomes primary RSN, as that provides a
> more consistent experience for development, and still exercises the API
> services as real wsgi applications.
> 
> 	-Sean
> 
> On 04/13/2017 08:01 AM, Sean Dague wrote:
>> One of the many reasons for getting all our API services running wsgi
>> under a real webserver is to get out of the custom ports for all
>> services game. However, because of some of the limits of apache
>> mod_wsgi, we really haven't been able to do that in our development
>> enviroment. Plus, the moment we go to mod_wsgi for some services, the
>> entire development workflow for "change this library, refresh the
>> following services" changes dramatically.
>>
>> It would be better to have a consistent story here.
>>
>> So there is some early work up to use apache mod_proxy_uwsgi as the
>> listener, and uwsgi processes running under systemd for all the
>> services. These bind only to a unix local socket, not to a port.
>> https://review.openstack.org/#/c/456344/
>>
>> Early testing locally has been showing progress. We still need to prove
>> out a few things, but this should simplify a bunch of the setup. And
>> coming with systemd will converge us back to a more consistent
>> development workflow when updating common code in a project that has
>> both API services and workers.
>>
>> For projects that did the mod_wsgi thing in a devstack plugin, this is
>> going to require some adjustment. Exactly what is not yet clear, but
>> it's going to be worth following that patch.
>>
>> 	-Sean
>>
> 
> 


-- 
Sean Dague
http://dague.net