I have a CentOS server on which I have Apache, Django, Django CMS and mod_wsgi. My Django project files are stored in the /srv directory and I have SELinux tur
You have to add writing rights to the directory in which your sqlite database is stored. So running chmod 664 /srv/mysite should help.
This is a security risk, so better solution is to change the owner of your database to www-data:
chown www-data:www-data /srv/mysite
chown www-data:www-data /srv/mysite/DATABASE.sqlite