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.. _deploying-uwsgi:
uWSGI
=====
uWSGI is a deployment option on servers like `nginx`_, `lighttpd`_, and
`cherokee`_; see :ref:`deploying-fastcgi` and
:ref:`deploying-other-servers` for other options. To use your WSGI
application with uWSGI protocol you will need a uWSGI server
first. uWSGI is both a protocol and an application server; the
application server can serve uWSGI, FastCGI, and HTTP protocols.
The most popular uWSGI server is `uwsgi`_, which we will use for this
guide. Make sure to have it installed to follow along.
.. admonition:: Watch Out
Please make sure in advance that any ``app.run()`` calls you might
have in your application file are inside an ``if __name__ ==
'__main__':`` block or moved to a separate file. Just make sure it's
not called because this will always start a local WSGI server which
we do not want if we deploy that application to uWSGI.
Starting your app with uwsgi
----------------------------
`uwsgi` is designed to operate on WSGI callables found in python modules.
Given a flask application in myapp.py, use the following command:
.. sourcecode:: text
$ uwsgi -s /tmp/uwsgi.sock --module myapp --callable app
Or, if you prefer:
.. sourcecode:: text
$ uwsgi -s /tmp/uwsgi.sock -w myapp:app
Configuring nginx
-----------------
A basic flask uWSGI configuration for nginx looks like this::
location = /yourapplication { rewrite ^ /yourapplication/; }
location /yourapplication { try_files $uri @yourapplication; }
location @yourapplication {
include uwsgi_params;
uwsgi_param SCRIPT_NAME /yourapplication;
uwsgi_modifier1 30;
uwsgi_pass unix:/tmp/uwsgi.sock;
}
This configuration binds the application to `/yourapplication`. If you want
to have it in the URL root it's a bit simpler because you don't have to tell
it the WSGI `SCRIPT_NAME` or set the uwsgi modifier to make use of it::
location / { try_files $uri @yourapplication; }
location @yourapplication {
include uwsgi_params;
uwsgi_pass unix:/tmp/uwsgi.sock;
}
.. _nginx: http://nginx.org/
.. _lighttpd: http://www.lighttpd.net/
.. _cherokee: http://www.cherokee-project.com/
.. _uwsgi: http://projects.unbit.it/uwsgi/
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