Flask behind gunicorn and supervisor - log all requests and responses

Question

I have inherited a flask server running behind gunicorn and supervisor. In a log file I want to see:

• All incoming requests
• All outgoing responses

I have multiple gunicorn workers. My gunicorn.conf.py looks like this:

import multiprocessing

bind = "0.0.0.0:8000"

workers = multiprocessing.cpu_count() * 2 + 1
worker_class = 'gevent'

max_requests = 1000
timeout = 30
keep_alive = 2

preload = True

and gunicorn.conf for supervisor looks like this:

[program:gunicorn]
command=/opt/anaconda/bin/gunicorn manage:app -c /etc/config/gunicorn.conf.py
directory=/root/ourthing/web
environment=PYTHONPATH=/root/ourthing/web
user=root
autorestart=true
stdout_logfile=/opt/logs/gunicorn_stdout.log
stderr_logfile=/opt/logs/gunicorn_stderr.log
loglevel=info
priority=400

With loglevel=info, I expected to see requests and responses in gunicorn_stdout.log and gunicorn_stderr.log, but no dice.

I have implemented this for logging, and it works, but to have to manually send every request and response with logger.info seems insane.

Is there a setting somewhere here where this will just happen automagically?

If so, where do I put it?

Also, I assume all the workers write to the same log....

EDIT: Here is what I added to gunicorn.conf.py via the accepted answer:

accesslog = '/root/logs/accesslog.log'
loglevel = 'debug'
access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s"'

Answer 1

The loglevel configuration setting only affects the error log, so changing its value won't help you log successful requests and responses.

Instead, try setting accesslog (to enable access logs) and access_log_format in your gunicorn.conf.py configuration file.