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Fixed #18518 -- Add warning re mod_wsgi and wsgi.py environ handling.

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commit 751a7d0c32746dc6774f1b561db523b25365148a 1 parent e44bedd
@carljm carljm authored
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4 django/conf/project_template/project_name/wsgi.py
@@ -15,6 +15,10 @@
"""
import os
+# We defer to a DJANGO_SETTINGS_MODULE already in the environment. This breaks
+# if running multiple sites in the same mod_wsgi process. To fix this, use
+# mod_wsgi daemon mode with each site in its own daemon process, or use
+# os.environ["DJANGO_SETTINGS_MODULE"] = "{{ project_name }}.settings"
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "{{ project_name }}.settings")
# This application object is used by any WSGI server configured to use this
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11 docs/howto/deployment/wsgi/modwsgi.txt
@@ -56,6 +56,15 @@ for you; otherwise, you'll need to create it. See the :doc:`WSGI overview
documentation</howto/deployment/wsgi/index>` for the default contents you
should put in this file, and what else you can add to it.
+.. warning::
+
+ If multiple Django sites are run in a single mod_wsgi process, all of them
+ will use the settings of whichever one happens to run first. This can be
+ solved with a minor edit to ``wsgi.py`` (see comment in the file for
+ details), or by :ref:`using mod_wsgi daemon mode<daemon-mode>` and ensuring
+ that each site runs in its own daemon process.
+
+
Using a virtualenv
==================
@@ -71,6 +80,8 @@ Make sure you give the correct path to your virtualenv, and replace
.. _virtualenv: http://www.virtualenv.org
+.. _daemon-mode:
+
Using mod_wsgi daemon mode
==========================
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