Run a flask application that uses a virtualenv and Flask-Login with gunicorn

[artgoldberg]

Hello Gunicorn folks

Cool software you've created!

I've created my first flask application, and configured it to use a virtualenv, as directed. It also uses Flask-Login to control access and manage user sessions. The latest production versions are used for all packages.

Following the Flask instructions, I'm using Gunicorn as the production WSGI server.

But I'm running into some problems:

1. Should I give up using the flask run command once I start using Gunicorn? Or is there a convenient way to use both?
2. I'd like Gunicorn to use the logging statements that the project has been using with the flask run command. This blog post recommends that the flask logger get pointed to the gunicorn loggers like this. Is this a best practice? If not, what do you recommend?

gunicorn_logger = logging.getLogger('gunicorn.error')
app.logger.handlers = gunicorn_logger.handlers
app.logger.setLevel(gunicorn_logger.level)

3. Is Gunicorn compatible with Flask-Login? If a user's login action is handled by a Gunicorn which saves the user's User instance in a global data structure, how does another Gunicorn process know about this logged in user?

4. What's the right way to configure the virtualenv for Gunicorn? The Using Virtualenv documentation says "you just need to use one of the three Gunicorn scripts that was installed into venvs/webapp/bin". But I don't find any scripts there.

Thanks
Arthur