Are you running any other Python web sites besides Trac?
That you have WSGIApplicationGroup set to %{GLOBAL} should be sufficient to
avoid the problem usually as its the application group which is the issue
and not the process group.
If not, will need to get you to verify that the application group setting
is applying properly and is actually running in the main interpreter.
Graham
On Friday, 13 January 2012, Michael Anckaert <[email protected]>
wrote:
> Hey everyone
>
> I've been using mod_wsgi in production for some time with good
> results. Yesterday I've stumbled into an issue where one of our django
> installations get the "can't adapt to decimal error" where this blog
> post (1) reports that it can be fixed by specifying the correct
> process-group parameter to the WSGIScriptAlias directive.
>
> But you guessed from the subject of this post that I'm using
> WSGIScriptAliasMatch. Basically our platform is a collection of
> various apps that are accessed via https://platform/appname/ the
> directive below runs the correct django instance via modwsgi.
>
> WSGIScriptAliasMatch ^/([^/]+) /var/www/instances/$1/django.wsgi
>
> I looked and searched the internets far and wide but couldn't find any
> working way to use modrewrite to specify the instance name and use it
> as a process group. There is an example from the trac wiki that comes
> close, but I can't seem to get it working.
>
> Does anyone know a good solution to this problem or have some advice I
> can check out?
>
> Kind regards
> Michael
>
> Trac example code:
>
> WSGIDaemonProcess site-1 user=user-1 group=user-1 threads=25
> WSGIDaemonProcess site-2 user=user-2 group=user-2 threads=25
> WSGIDaemonProcess site-3 user=user-3 group=user-3 threads=25
>
> RewriteEngine On
> RewriteCond %{REQUEST_URI} ^/trac/([^/]+)
> RewriteRule . - [E=trac.process_group:%1,\
> E=trac.env_path:/usr/local/trac/sites/%1]
>
> WSGIScriptAliasMatch ^/trac/([^/]+) /usr/local/trac/apache/trac.wsgi
>
> <Directory /usr/local/trac/apache>
> WSGIProcessGroup %{ENV:trac.process_group}
> WSGIApplicationGroup %{GLOBAL}
> Order deny,allow
> Allow from all
> </Directory>
>
> (1)
http://www.defitek.com/blog/2010/06/29/cant-adapt-type-decimal-error-with-django-apache-postgresql-psycopg2/
>
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