Setting environment variables in mod_wsgi for Django

Your mod_wsgi was compiled for Python 2.7. You cannot then try and point it at a Python 2.5 virtual environment.

Also, the setting:

WSGIPythonHome /home/rory/tix/virtualenv2.5/lib/python2.5/

is pointing at the wrong thing even if it was a Python 2.7 virtual environment.

The settings:

UnSetEnv PYTHONSTARTUP
SetEnv PYTHONPATH /home/rory/tix/virtualenv2.5/lib/python2.5/

will not do anything either and don't know where you got the idea you could do that.

FWIW, the mod_wsgi documentation on virtual environments can be found at:

https://modwsgi.readthedocs.io/en/develop/user-guides/virtual-environments.html

This isn't going to help you though because you seem to have a more basic problem with your mod_wsgi and Python installations to begin with. The issue potentially being a variant of:

https://modwsgi.readthedocs.io/en/develop/user-guides/installation-issues.html#multiple-python-versions

Where did you get the mod_wsgi.so you are using?

Where is the Python 2.7 installed?

What other Python versions do you have installed and where?

You are using ITK MPM for Apache. You will need to be using mod_wsgi 3.3 or later, which contains fix:

When compiled against ITK MPM for Apache, if using daemon mode, the listener socket for daemon process will be marked as being owned by the same user that daemon process runs. This will at least allow a request handled under ITK MPM to be directed to daemon process owned by same user as script. See issue:

http://code.google.com/p/modwsgi/issues/detail?id=187

You cannot though just use binary supplied by operating system as those available are likely only going to be for worker and prefork MPM. For ITK MPM you will need to compile mod_wsgi from source code and you MUST have the appropriate headers files for the ITK MPM installed and not those for worker or prefork MPM. This is because mod_wsgi source code has:

    if (!geteuid()) {
#if defined(MPM_ITK)
        if (chown(process->socket, process->uid, -1) < 0) {
#else
        if (chown(process->socket, ap_unixd_config.user_id, -1) < 0) {
#endif
            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, wsgi_server,
                         "mod_wsgi (pid=%d): Couldn't change owner of unix "
                         "domain socket '%s'.", getpid(),
                         process->socket);
            return -1;
        }
    }

IOW, it is a compile time choice as to how to setup permissions with it only being set for ITK MPM correctly if ITK MPM headers are installed properly and so MPM_ITK #define found.

In summary, you will need to do the following:

(1) Ensure that ITK MPM header files installed. If using binary package for Apache, see if there is an ITK variant of the Apache dev package.

(2) Compile and install mod_wsgi from source code available in publically downloadable mod_wsgi 3.3 source package

The mod_wsgi source code package and installation instructions are available from:

http://www.modwsgi.org