Gunicorn now supports SSL, as of version 17.0. You can configure it to listen on https like this: $ gunicorn –certfile=server.crt –keyfile=server.key test:app If you were using –bind to listen on port 80, remember to change the port to 443 (the default port for HTTPS connections). For example: $ gunicorn –certfile=server.crt –keyfile=server.key –bind 0.0.0.0:443 test:app
Use –daemon option while running gunicorn. Example: gunicorn grand56.wsgi:application –name grand56 –workers 3 –user=root –group=root –bind=127.0.0.1:1001 –daemon
It turns out the print statements were actually getting through, but with delay. The gunicorn docs for –enable-stdio-inheritance note to set the PYTHONUNBUFFERED, which I thought I had, but it seems with wrong syntax. I solved it using a .env file with my foreman setup to set the variable like this: PYTHONUNBUFFERED=TRUE
You can tell Gunicorn to reload gracefully using the HUP signal like so: kill -HUP <pid> (see the FAQ for details) I use Supervisor to control my Gunicorn server, which allows me to use this (slightly hacky) way of reloading Gunicorn after a deploy: supervisorctl status gunicorn | sed “s/.*[pid ]\([0-9]\+\)\,.*/\1/” | xargs kill -HUP … Read more
file() is not supported in Python 3 Use open() instead; see Built-in Functions – open().
I know I may be considered a little off the wall here but there is another option. We know that from time to time there is a bug that happens on transit.We know that there is not much we can do right now to stop the problem. If you are only providing the API then … Read more
This approach works for me: Import the Python logging module and add gunicorn’s error handlers to it. Then your logger will log into the gunicorn error log file: import logging app = Flask(__name__) gunicorn_error_logger = logging.getLogger(‘gunicorn.error’) app.logger.handlers.extend(gunicorn_error_logger.handlers) app.logger.setLevel(logging.DEBUG) app.logger.debug(‘this will show in the log’) My Gunicorn startup script is configured to output log entries to … Read more
The accepted solution doesn’t work for me. Gunicorn is a pre-forking environment and apparently the Flask debugger doesn’t work in a forking environment. Attention Even though the interactive debugger does not work in forking environments (which makes it nearly impossible to use on production servers) […] Even if you set app.debug = True, you will … Read more
These technologies aren’t as similar as they initially seem. They address different portions of the application stack and are actually complementary. Gunicorn is for scaling web request concurrency, while celery should be thought of as a worker queue. We’ll get to kubernetes soon. Gunicorn Web request concurrency is primarily limited by network I/O or “I/O … Read more
To see the processes is ps ax|grep gunicorn and to stop gunicorn_django is pkill gunicorn.