flask and gunicorn specific deployments

deployment.md

1. How to pass args or kwargs to gunicorn?

# codename/app.py
def create_app():
    app = FrameworkApp()
    ...
    return app

$ gunicorn --workers=2 'codename.app:create_app()'

Positional and keyword arguments can also be passed, but it is recommended to load configuration from environment variables rather than the command line.

2. Resolve Gunicorn timeout error -

[2020-04-14 19:27:11 +0530] [86010] [CRITICAL] WORKER TIMEOUT (pid:86032)

or

ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response',))

default timeout is 30 seconds. Tweak it. Example:

Setting timeout to 100 seconds

gunicorn -b localhost:5000 'codename.app:make_app(model="bert")' --timeout 100 --graceful-timeout 100