Open Stack

knikolla brought up an interesting wedge in this goal in #openstack-keystone
today.

It seems mod_wsgi doesn't want python applications catching SIGHUP,
as Apache expects to be able to catch that. By default, it even ensures
signal handlers do not get registered.[0]

I can't quickly find uwsgi's recommendations on this, but I'd assume
it would be similar, as uwsgi uses SIGHUP as a signal to gracefully
reload all workers and the master process.

Given we just had a goal to make all API services runnable as a WSGI
application, it seems wrong to enable mutable config for API services.
It's a super useful thing though, so I'd love to figure out a way we can do
it.

Thoughts?

[0]
http://modwsgi.readthedocs.io/en/develop/configuration-directives/WSGIRestrictSignal.html
[1]
http://uwsgi-docs.readthedocs.io/en/latest/Management.html#signals-for-controlling-uwsgi


// jim

On Wed, Feb 28, 2018 at 5:27 AM, ChangBo Guo <glongwave at gmail.com> wrote:

> Hi ALL,
>
> TC approved the  goal [0]  a week ago ,  so it's time to finish the work.
> we also have a short discussion in oslo meeting  at PTG, find more details
> in [1] ,
> we use storyboard to check the goal in  https://storyboard.openstack.
> org/#!/story/2001545.  It's appreciated PTL set the owner in time .
> Feel free to reach me( gcb) in IRC if you have any questions.
>
>
> [0] https://review.openstack.org/#/c/534605/
> [1] https://etherpad.openstack.org/p/oslo-ptg-rocky  From line 175
>
> --
> ChangBo Guo(gcb)
> Community Director @EasyStack
>
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