gunicorn/doc/site/usage.rst
2010-05-06 20:55:38 -04:00

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template: doc.html
title: Command Line Usage
Usage
=====
After installing Gunicorn you will have access to three command line scripts
that can be used for serving the various supported web frameworks: ``gunicorn``,
``gunicorn_django``, and ``gunicorn_paster``.
Commonly Used Arguments
+++++++++++++++++++++++
* ``-c CONFIG, --config=CONFIG`` - Specify the path to a `config file`_
* ``-b BIND, --bind=BIND`` - Specify a server socket to bind. Server sockets
can be any of ``$(HOST)``, ``$(HOST):$(PORT)``, or ``unix:$(PATH)``.
An IP is a valid ``$(HOST)``.
* ``-w WORKERS, --workers=WORKERS`` - The number of worker processes. This
number should generally be between 2-4 workers per core in the server.
Check the FAQ_ for ideas on tuning this parameter.
* ``-k WORKERCLASS, --worker-class=WORKERCLASS`` - The type of worker process
to run. You'll definitely want to read the `production page`_ for the
implications of this parameter. You can set this to ``egg:gunicorn#$(NAME)``
where ``$(NAME)`` is one of ``sync``, ``eventlet``, ``gevent``, or
``tornado``. ``sync`` is the default.
* ``-n APP_NAME, --name=APP_NAME`` - If setproctitle_ is installed you can
adjust the name of Gunicorn process as they appear in the process system
table (which affects tools like ``ps`` and ``top``).
There are various other parameters that affect user privileges, logging, etc.
You can see the complete list at the bottom of this page or as expected with::
$ gunicorn -h
gunicorn
++++++++
The first and most basic script is used to server 'bare' WSGI applications
that don't require a translation layer. Basic usage::
$ gunicorn [OPTIONS] APP_MODULE
Where ``APP_MODULE`` is of the pattern ``$(MODULE_NAME):$(VARIABLE_NAME)``. The
module name can be a full dotted path. The variable name refers to a WSGI
callable that should be found in the specified module.
Example with test app::
$ cd examples
$ gunicorn --workers=2 test:app
gunicorn_django
+++++++++++++++
You might not have guessed it, but this script is used to server Django
applications. Basic usage::
$ gunicorn_django [OPTIONS] [SETTINGS_PATH]
By default ``SETTINGS_PATH`` will look for ``settings.py`` in the current
directory.
Example with your Django project::
$ cd path/to/yourdjangoproject
$ gunicorn_django --workers=2
Alternatively, you can install some Gunicorn magic directly into your Django
project and use the provided command for running the server.
First you'll need to add ``gunicorn`` to your ``INSTALLED_APPS`` in the settings
file::
INSTALLED_APPS = (
...
"gunicorn",
)
Then you can run::
python manage.py run_gunicorn
gunicorn_paster
+++++++++++++++
Yeah, for Paster-compatible frameworks (Pylons, TurboGears 2, ...). We
apologize for the lack of script name creativity. And some usage::
$ gunicorn_paster [OPTIONS] paste_config.ini
Simple example::
$ cd yourpasteproject
$ gunicorn_paste --workers=2 development.ini
If you're wanting to keep on keeping on with the usual paster serve command,
you can specify the Gunicorn server settings in your configuration file::
[server:main]
use = egg:gunicorn#main
host = 127.0.0.1
port = 5000
And then as per usual::
$ cd yourpasteproject
$ paster serve development.ini workers=2
Full Command Line Usage
+++++++++++++++++++++++
::
$ gunicorn -h
Usage: gunicorn [OPTIONS] APP_MODULE
Options:
-c CONFIG, --config=CONFIG
Config file. [none]
-b BIND, --bind=BIND Adress to listen on. Ex. 127.0.0.1:8000 or
unix:/tmp/gunicorn.sock
-w WORKERS, --workers=WORKERS
Number of workers to spawn. [1]
-k WORKER_CLASS, --worker-class=WORKER_CLASS
The type of request processing to use
[egg:gunicorn#sync]
-p PIDFILE, --pid=PIDFILE
set the background PID FILE
-D, --daemon Run daemonized in the background.
-m UMASK, --umask=UMASK
Define umask of daemon process
-u USER, --user=USER Change worker user
-g GROUP, --group=GROUP
Change worker group
-n PROC_NAME, --name=PROC_NAME
Process name
--log-level=LOGLEVEL Log level below which to silence messages. [info]
--log-file=LOGFILE Log to a file. - equals stdout. [-]
-d, --debug Debug mode. only 1 worker.
--spew Install a trace hook
--version show program's version number and exit
-h, --help show this help message and exit
.. _FAQ: faq.html
.. _`production page`: deployment.html
.. _`config file`: configuration.html
.. _setproctitle: http://pypi.python.org/pypi/setproctitle/