How to configure django logging for production under gunicorn server?

Question

I have this logging configuration set up:

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
        }
    },
    'formatters': {
        'verbose': {
            'format': '%(asctime)s %(levelname)s [%(name)s:%(lineno)s] %(module)s %(process)d %(thread)d %(message)s'
        }
    },
    'handlers': {
        'console': {
            'level': 'INFO',
            'class': 'logging.StreamHandler',
            'stream': sys.stdout,
            'formatter': 'verbose'
        }
    },
    'loggers': {
        'gunicorn.errors': {
            'level': 'INFO',
            'handlers': ['console'],
            'propagate': True,
        },
    }
}

It seems to have no effect at all. When the flag DEBUG is set to True then I can see some errors in the console. When however it's set to False, I cannot. So how to log the errors to the console despite DEBUG flag being set one way or the other?

Answer 1

In django 1.9 the default logging configuration has been changed:

Changes to the default logging configuration¶

To make it easier to write custom logging configurations, Django’s default logging configuration no longer defines ‘django.request’ and ‘django.security’ loggers. Instead, it defines a single ‘django’ logger, filtered at the INFO level, with two handlers:

‘console’: filtered at the INFO level and only active if DEBUG=True. ‘mail_admins’: filtered at the ERROR level and only active if DEBUG=False. If you aren’t overriding Django’s default logging, you should see minimal changes in behavior, but you might see some new logging to the runserver console, for example.

If you are overriding Django’s default logging, you should check to see how your configuration merges with the new defaults.

So what you need to do is simply override the default config, add this to your loggers:

'django':{
    'level': 'INFO',
    'handlers': ['console'],
    'propagate': True,
}  

Logging to console wont depend on DEBUG now.

Hope this helps!

Answer 2

Try adding --capture-output and --enable-stdio-inheritance with gunicorn

/home/ubuntu/inside-env/bin/gunicorn --access-logfile access.log --error-logfile error.log --capture-output --enable-stdio-inheritance --workers 3 --bind unix:/home/ubuntu/path-to-project/webapp.sock project.wsgi:application

and then in your views,

import logging 
logging.basicConfig(level='DEBUG')
logging.info('...something...')