Preparar para publicar en Read the Docs
Signed-off-by: Edgar Alvarado Taleno <edgar.alvaradotaleno@ucr.ac.cr>
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flask-docs/_sources/deploying/mod_wsgi.rst.txt
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flask-docs/_sources/deploying/mod_wsgi.rst.txt
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mod_wsgi
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========
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`mod_wsgi`_ is a WSGI server integrated with the `Apache httpd`_ server.
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The modern `mod_wsgi-express`_ command makes it easy to configure and
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start the server without needing to write Apache httpd configuration.
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* Tightly integrated with Apache httpd.
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* Supports Windows directly.
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* Requires a compiler and the Apache development headers to install.
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* Does not require a reverse proxy setup.
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This page outlines the basics of running mod_wsgi-express, not the more
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complex installation and configuration with httpd. Be sure to read the
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`mod_wsgi-express`_, `mod_wsgi`_, and `Apache httpd`_ documentation to
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understand what features are available.
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.. _mod_wsgi-express: https://pypi.org/project/mod-wsgi/
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.. _mod_wsgi: https://modwsgi.readthedocs.io/
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.. _Apache httpd: https://httpd.apache.org/
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Installing
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----------
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Installing mod_wsgi requires a compiler and the Apache server and
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development headers installed. You will get an error if they are not.
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How to install them depends on the OS and package manager that you use.
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Create a virtualenv, install your application, then install
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``mod_wsgi``.
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.. code-block:: text
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$ cd hello-app
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$ python -m venv .venv
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$ . .venv/bin/activate
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$ pip install . # install your application
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$ pip install mod_wsgi
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Running
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-------
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The only argument to ``mod_wsgi-express`` specifies a script containing
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your Flask application, which must be called ``application``. You can
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write a small script to import your app with this name, or to create it
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if using the app factory pattern.
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.. code-block:: python
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:caption: ``wsgi.py``
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from hello import app
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application = app
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.. code-block:: python
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:caption: ``wsgi.py``
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from hello import create_app
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application = create_app()
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Now run the ``mod_wsgi-express start-server`` command.
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.. code-block:: text
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$ mod_wsgi-express start-server wsgi.py --processes 4
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The ``--processes`` option specifies the number of worker processes to
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run; a starting value could be ``CPU * 2``.
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Logs for each request aren't show in the terminal. If an error occurs,
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its information is written to the error log file shown when starting the
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server.
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Binding Externally
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------------------
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Unlike the other WSGI servers in these docs, mod_wsgi can be run as
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root to bind to privileged ports like 80 and 443. However, it must be
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configured to drop permissions to a different user and group for the
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worker processes.
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For example, if you created a ``hello`` user and group, you should
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install your virtualenv and application as that user, then tell
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mod_wsgi to drop to that user after starting.
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.. code-block:: text
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$ sudo /home/hello/.venv/bin/mod_wsgi-express start-server \
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/home/hello/wsgi.py \
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--user hello --group hello --port 80 --processes 4
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