This guide is for installing Trac as a user using virtualenv for a isolated Python environment so that the whole installation runs under a specific user.
First of all we need to install needed packages
apt-get install libapache2-mod-wsgi python-virtualenv python-setuptools
Once we have installed the required packages proceed to create the Python environment
mkdir /usr/local/trac
cd /usr/local/trac
virtualenv python
We now have the isolated Python environment locate under /usr/local/trac/python.
To make possible to use easy_install with repositories we need to upgrade easy_install. I use this to install Trac plugins directly from SVN.
/usr/local/trac/python/bin/easy_install -U trunk
We now can install trac 0.12 using the 0.12b1 SVN Tag (http://svn.edgewall.com/repos/trac/tags/trac-0.12b1 or Trac==0.12b1) or directly from SVN Trunk:
/usr/local/trac/python/bin/easy_install http://svn.edgewall.org/repos/trac/trunk
This will download and install the latest trunk version for Trac.
To have webaccess to the Trac projects, we need a .wsgi script, were we define where our local python environment is located:
# Not needed if mod_wsgi >= 3.0
import sys
sys.stdout = sys.stderr
# Load Trac
import trac.web.main
application = trac.web.main.dispatch_request
And finally we need to configure apache. If you want only one Trac project, you should define trac.env to the location of your trac, but if you want multiproject support, you must use trac.env_parent_dir (this is what I used)
ServerName trac.dns.com
DocumentRoot /usr/local/trac/htdocs
ErrorLog /var/log/apache2/trac-error.log
CustomLog /var/log/apache2/trac-access.log combined
# Trac Auth
WSGIProcessGroup trac
WSGIApplicationGroup %{GLOBAL}
SetEnv trac.env_parent_dir /usr/local/trac/projects
We need to create the user and change the permissions for /usr/local/trac for that user trac
adduser --home /usr/local/trac --shell /bin/false --no-create-home trac
chown -R trac:trac /usr/local/trac
If you get an error “ImportError: No module named simplejson” just install it using easy_install
/usr/local/trac/python/bin/easy_install simplejson
You don’t need to call site.addsitedir() in WSGI script file as you are already configured that via python-path option to WSGIDaemonProcess directive. Rather than use python.egg_cache via SetEnv, you are better off using python-eggs option to WSGIDaemonProcess. You don’t need to override sys.stdout if you are using mod_wsgi 3.0 or later.
I just corrected the article. Thanks for your comments.
In debian lenny mod_wsgi is still version 2.5
Hello I am trying to setup using these instructions.
I am running into trouble setting the environment.
SetEnv trac.env /path/trac/env
setting the env like this doesn’t work but using the parent env directive works
SetEnv trac.env_parent_dir /path/trac
What do you think is the problem. Can you confirm that it works with SetEnv trac.env
I have found the solution for my problem.
The correct directive is
SetEvn trac.env_path /path/to/trac/env
instead of
SetEnv trac.env /path/to/trac/env