[mod_python] Issues with multiple instances of mod_python websites on the same machine

Graham Dumpleton graham.dumpleton at gmail.com
Sun Dec 6 05:22:08 EST 2009

Each user must be given a separate Python sub interpreter instance to
run their copy of the application in. This is done using the
PythonInterpreter directive. Thus, set this directive inside of a
Directory directive unique to web directory inside users account. For

<Directory /home/joe/public_html>
PythonInterpreter user:joe

<Directory /home/bob/public_html>
PythonInterpreter user:bob


2009/12/6 Guruprasad <lgp171188 at gmail.com>:
> Hi all,
> In our college, we have a mod_python based web application for our
> intranet portal. We have a local testbed where the student devs have
> their own logins and they work on their own subversion working copies
> and publish their sites using mod_python configuration in
> /etc/apache2/sites-available/default and userdir module. But we very
> often face a problem like this.
> All the users have their own copies of the web application and when
> one user opens and navigates through the web application when other
> user is doing the same with his copy, on clicking links and all, all
> the addresses start getting changed into those of the other user and
> not mine. We use Debian Lenny and the versions of apache2 and
> mod_python shipped with them with the mpm-prefork module. How to avoid
> such an issue.
> For example when I click on a link in a site
> http://localhost/~user1/blah it gets changed it to
> http://localhost/~user2/blah and causes confusions. This issue happens
> only when the users publish their own sites.
> --
> Thank you.
> Regards,
> Guruprasad.
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