麻烦mod_wsgi

Question

I'm working on a Linux Centos virtual host with Hostgator. I'm using httpd version 2.2.15.

I configured mod_wsgi-4.4.13 with tags --with-python=/usr/local/bin/python2.7 and --enable-shared . Python 2.6 is installed in /usr/bin . I have a symlink from /usr/local/lib/python2.7/config/libpython2.7.so.1.0 to /usr/local/lib/libpython.2.7.so.1.0 .

My trouble is that when I run python 'index.fcgi' in /var/www/html , I get the error

from mod_wsgi import get_wsgi_application ImportError: /usr/lib64/httpd/modules/mod_wsgi.so: undefined symbol: apr_bucket_shared_split

I've tried setting $PYTHONHOME to /usr/local . I've already set the $LIBRARY_LD_PATH variable (before doing that I couldn't get the library at all). I'm really not sure what to do next. Please help!

Thank you.

Answer 1

You have the following issues.

1 - The --enable-shared is not used with mod_wsgi build, but with the configure script of Python when building it. For more details see:

• https://code.google.com/p/modwsgi/wiki/InstallationIssues#Lack_Of_Python_Shared_Library

2 - From memory the shared library for Python should already gave been linked into /usr/local/lib . If it isn't something has gone wrong with your Python install. Even when installed in an alternate location such that the library isn't on the normal shared library search path, rather than symlinking the libpython.2.7.so.1.0 into an appropriate directory, you are better off setting LD_RUN_PATH environment variable when building mod_wsgi from clean source code to be the directory where the Python shared library is. See:

• https://code.google.com/p/modwsgi/wiki/InstallationIssues#Unable_To_Find_Python_Shared_Library

3 - A .fcgi file has got nothing to do with mod_wsgi, so why are you running python index.fcgi in the first place?

4 - Nothing tells you to put in your code:

from mod_wsgi import get_wsgi_application

Where did you see that you needed to do that? Why that is even loading mod_wsgi.so I don't know as Python shouldn't be able to find it in the Apache modules directory like that as that directory isn't on the normal Python module search path.

In short, you appear to be doing things you haven't told us and what you are doing isn't what mod_wsgi documentation tells you to do. Please provide a pointer to the part of the official mod_wsgi documentation that you are using to set things up.