Configure gunicorn completely via environment variables.
gunicorn itself provides environment variable access to only some of its settings. This package closes the gap, and allows configuring all settings via the environment.
Put this into your config file (usually gunicorn.conf.py):
import gunicorn_environmentconfig
gunicorn_environmentconfig.apply(globals())
Set environment variables with the naming scheme gunicorn.{setting},
where setting is the name you'd use in the config file, for example:
env gunicorn.preload_app=true python -m gunicorn myapp
If you append __literal__ to the variable name, they are evaluated as Python literals,
for example to make gunicorn use the already existing logging configuration
(which might e.g. use a JSON formatter)
and not set up its own formatters, use this:
gunicorn.logconfig_dict__literal__={'root': {}, 'loggers': {'gunicorn.error': {'propagate': True}}, 'handlers': {}, 'formatters': {}}
To help with transitioning, settings read from a paste.ini configuration file can be added to the environment (environment takes priority).
To use this, set the GUNICORN_INI_CONFIG environment variable to the filename and section name.
[app:main]
use = egg:myapp#main
my_app_setting = value1
gunicorn.preload_app = true
env GUNICORN_INI_CONFIG=paste.ini#app:main python -m gunicorn myapp