Install Apache-Passenger (mod_rails) on Ubuntu 9.04 in 10 steps

A very quick guide on installing Passenger (mod_rails) on a clean install of Ubuntu jaunty 9.04.

1. apt-get install build-essentials
2. apt-get ruby apt-get ruby-dev
3. gem install rubygems-update
4. cd /var/lib/gems/1.8/rubygems-update-1.3.x/
5. ruby setup.rb or bin/update_rubygems
6. gem update --system
7. gem update
8. gem install passenger
9. apt-get install libopenssl-ruby1.8 apache2-prefork-dev libaprutil1 libaprutil1-dev
10. passenger-install-apache2-module

At the end of the installation, you will be prompted to add a few lines to your apache conf -- copy and paste the lines to /etc/apache2/apache2.conf and you are ready to deploy Rails apps immediately.

For the rest of the setup and configuration see here. Hope this helps someone out there.