Deploying a Django Application on Lighttpd with fastcgi and virtualenv

So you wrote a fancy little Django app and want to run it on a lighttpd webserver? There’s plenty of documentation on this topic online, including official Django documentation.

Problem is, most of these sources do not mention how to use virtualenv, but the cool kids don’t install their packages into the global site-packages directory. So I put some scripts together for your enjoyment.

I assume that you’ve put your django app somewhere convenient, and that you have a virtualenv containing its packages (including django itself).

1. manage.py

You want to set up this file so it adds the virtualenv’s site-packages path to its site-packages: site.addsitedir('path/to/mysite-env/lib/python2.6/site-packages'). Note that you need to point directly to the site-packages dir inside the virtualenv, not only the main virtualenv dir. For obvious reasons, this line needs to come before the django-provided from django... import, because you can’t import django files if Python doesn’t know where they are.

2. settings.py

The lighttpd setup will result in mysite.fcgi showing up in all your URLs, unless you set FORCE_SCRIPT_NAME correctly. If your django app is supposed to live right at the root of your domain, set this to the empty string, for example.

3. django-servers.sh

This is an initscript (for Debian, but you can modify it to work with most distros, I presume). Copy it to /etc/init.d, adjust the settings on top (and possibly other places, depending on your setup), then start the Django fastcgi servers. Note that you need to have the flup package installed in your virtualenv.

4. lighttpd-vhost.conf

Set up your lighttpd vhost pretty much like the Django documentation suggests. Match up the host and port with the settings from your init script. By using mod_alias for the media and admin media paths, you’ll have lighttpd serve them instead of passing them on to Django as well.

That’s it! You’ve deployed your first Django application on lighttpd. If you have any questions or suggestions, feel free to comment here or fork my code.

You can look at all the scripts together over on github or download them in a package.

Annoying Browser-Related Blog Spam

Over the recent weeks I’ve got frequent blog spam along the lines of:

Hi. I just noticed that your site looks like it has a few code problems at the very bottom of your site’s page. I’m not sure if everybody is getting this same problem when browsing your blog? I am employing a totally different browser than most people, referred to as Opera, so that is what might be causing it? I just wanted to make sure you know. Thanks for posting some great postings and I’ll try to return back with a completely different browser to check things out!

(emphasis: mine)

Not only does my blog display just fine in Opera (yes, I checked), I get even more bogus comments at times claiming that my blog looks horrible in Firefox, of all browsers. Dear spammers, now you’re just making fools of yourselves.

The main thing identifying this kind of comment as spam (other than the bogus claim that my blog doesn’t render correctly in non-Internet-Explorer browsers) is the URL these comments come with. Usually, they promise a “free” iPod, MacBook, car, house, airplane or ride to the moon (exaggeration: mine).

I wonder how many bloggers actually publish these, thinking it’s well-meant advice. :(

Photo credit: “Spam” CC by-sa licensed by twicepics on flickr

Categories: Mozilla Crosspost, OSU OSL Crosspost, Tech Talk | Tags: ,

Things-Bugzilla or: Embedding Python into AppleScript

To keep track of my ever-growing to-do list, I am using a fabulous little application called “Things”. And most of my work-related to-do items are bugs in Mozilla’s bugzilla bug tracker.

So, me being a geek and all, I quite naturally wanted to integrate the two and wrote a little AppleScript that asks the user for a bugzilla.mozilla.org bug number, obtains its bug title, and makes a new to-do item for it in Things’ Inbox folder.

The script is available as a gist on github. Click here to download it.

If you look at the code, you’ll notice that I went ahead and embedded some Python code to the script to do the heavy lifting. The problem with AppleScript is not only that it has a hideous syntax, it also completely lacks a standard library for things like downloading websites and regex-parsing strings. Let’s look at it a little closer:

set bugtitle to do shell script "echo \"" & bugzilla_url & "\" | /usr/bin/env python -c \"
import re
import sys
import urllib2
bug = urllib2.urlopen(sys.stdin.read())
title = re.search('<title>([^<]+)</title>', bug.read()).group(1)
title = title.replace('&ndash;', '-')
print title
\""
  • set bugtitle to do shellscript "" means, assign whatever this shell expression returns to the variable bugtitle. This way, we just need to print our final result to stdout and keep using it in AppleScript.
  • echo \"" & bugzilla_url & "\" | /usr/bin/env python feeds some input data into the Python script through stdin. We read that a few lines later with sys.stdin.read(). Another method, especially for more than one input values, would be command-line parameters, all the way at the end of the Python block (after the source code).
  • Finally, in python -c \"mycode\" the -c marks an inline code block to be executed by the Python interpreter. Other languages, such as Perl, PHP, or Ruby, have similar operating modes, so you can use those as well.

If you want to install the Things-Bugzilla AppleScript, make sure to download the entire Gist as it also contains an install script for your convenience.

Managing Young Sys Admins At Oregon State Open Source Lab

A few days ago techtarget published a short interview about the OSU Open Source Lab, where I worked while studying at OSU:

“Lance Albertson, architect and systems administrator at the Oregon State University Open Source Lab, uses a sys admin staff of 18-21-year-old undergrads to manage servers for some high-profile, open-source projects (Linux Master Kernel, Linux Foundation, Apache Software Foundation, and Drupal to name a few). In this Q&A, Albertson talks about the challenges of using young sys admins and the lab’s plans to move from Cfengine to Puppet for systems management.”

(via slashdot).

I must say, the work I’ve seen student sys admins do at the OSL is outstanding, and I’ve met some of the sharpest people there I’ve ever worked with. Glad to hear they are still going strong.

Thanks for the link, Justin!

Categories: Corvallis, OSU, OSU OSL Crosspost, Tech Talk