pserve + gunicorn causing some issues

[Sontek]

When using this configuration setup:

[server:main]

use = egg:gunicorn#main

host = 0.0.0.0

port = 9920

worker_class = gunicorn.workers.ggevent.GeventWorker

workers = 4

I'm getting errors like:

SQLALchemy:

    SAWarning: At least one scoped session is already present.  configure() can not affect sessions that have already been created.

and with dogpile.cache:

    Exception: This region is already configured with backend: <dogpile.cache.backends.redis.RedisBackend object at 0x2950f90>

If you use gunicorn_paster everything works just fine.  Anyone know what causes pserve to have trouble with these and if there

is a workaround?

[Nikolay Kim]

You probably should use something like https://github.com/fafhrd91/pyramid_sockjs/blob/master/pyramid_sockjs/paster.py

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[John Anderson]

On Tue, May 7, 2013 at 4:05 PM, Nikolay Kim <fafh...@gmail.com> wrote:

You probably should use something like https://github.com/fafhrd91/pyramid_sockjs/blob/master/pyramid_sockjs/paster.py

On May 7, 2013, at 3:59 PM, Sontek <son...@gmail.com> wrote:

When using this configuration setup:

[server:main]

use = egg:gunicorn#main

host = 0.0.0.0

port = 9920

worker_class = gunicorn.workers.ggevent.GeventWorker

workers = 4

I'm getting errors like:

SQLALchemy:

    SAWarning: At least one scoped session is already present.  configure() can not affect sessions that have already been created.

and with dogpile.cache:

    Exception: This region is already configured with backend: <dogpile.cache.backends.redis.RedisBackend object at 0x2950f90>

If you use gunicorn_paster everything works just fine.  Anyone know what causes pserve to have trouble with these and if there

is a workaround?

We would like to stick to being able to use pserve so that we can swap out webservers based on configuration if possible.  It seems to be

possible since gunicorn_paster seems to work just fine.  

[Alvaro Aguirre]

are you using the Zope Extension for SQLAlchemy?

I got similar errors using it with gevent.

Removing this extension everything worked fine again.

--

[Chris McDonough]

On Tue, 2013-05-07 at 16:10 -0700, John Anderson wrote:
>
> On Tue, May 7, 2013 at 4:05 PM, Nikolay Kim <fafh...@gmail.com>
> wrote:
> You probably should use something like
> https://github.com/fafhrd91/pyramid_sockjs/blob/master/pyramid_sockjs/paster.py
>
>
>

> We would like to stick to being able to use pserve so that we can swap
> out webservers based on configuration if possible. It seems to be
> possible since gunicorn_paster seems to work just fine.

FTR, the setuptools entry points that make "pserve" and "paster serve"
work ("paste.server_runner") are the same, and work exactly the same, so
they should be interchangeable.

- C

[Sontek]

I was talking about:

https://github.com/benoitc/gunicorn/blob/master/gunicorn/app/pasterapp.py

which seems to be doing something a little different than pserve because I don't have these issues in it. 

[Chris McDonough]

Not sure what "in it" means because when you use "use =
egg:gunicorn#main" in your [server] section, the "paste_server" function
in the file you reference above will be executed by pserve.

- C