Check it out http://sinatra.seanbehan.com/ This assumes Apache2 and the Phusion Passenger module have already been installed. If not you can get up to speed w/ this resource http://seanbehan.com/ruby-on-rails/new-ubuntu-slice-apache-mysql-php-ruby-on-rails-git-and/

First you need Sinatra, so install the gem

gem install sinatra

We need a home for Frank, so create the minimum number of directories in our web directory. The public directory is where we'll server images, stylesheets, javascript etc. The tmp directory will be where we control Passenger.

cd /var/www/sinatra
mkdir myapp
mkdir myapp/tmp
mkdir myapp/public
cd myapp
vim index.rb
in index.rb
get '/' do
"Fly me to the moon..."
end

Next we need a configuration file for Rack, important the file extension is ".ru" not .rb!

vim config.ru
require 'rubygems'
require 'sinatra'
Sinatra::Application.default_options.merge!(
:run => false,
:env => ENV['RACK_ENV']
)
require 'index'
run Sinatra.application

Set up the virtual host

  ServerName www.myapp.com
  DocumentRoot /var/www/sinatra/public

touch tmp/restart.txt

Keep on singing :)

Inspired by http://blog.zerosum.org/2008/7/4/passenger-3-sinatra