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Ubuntu Hardy - mod_rails Installation

Phusion's Passenger (mod_rails) is an exciting development in serving your Ruby on Rails application with the Apache web server.

Simple to install and use, you can have a Rails application up and running quickly. You don't have to worry about ports or setting up a proxy to another server.



This article assumes that you have the following items already installed:

Install mod_rails

Passenger (mod_rails) is a RubyGem.

First, you have to update the RubyGems installation, as follows:

sudo gem update

Then, install Passenger:

sudo gem install passenger

After Passenger is installed, install the Passenger Apache2 module:

sudo passenger-install-apache2-module

A dialog box opens in the terminal and starts with the following information:

Press Enter/Return. The following information appears:

The installer has found a missing dependency, the Apache headers.
Press Enter/Return. The installer provides instructions for installing the headers:

The installation completes with instructions telling you to add some lines to the main Apache 2 configuration file.

Run the following command:

sudo nano /etc/apache2/apache2.conf

Note: Passenger is an active gem and is being updated all the time. Instead of copying and pasting the following output, copy and paste the output from the installation itself.

At the time of the most recent update to this article, Passenger v4.0.33 was the current version. So, for the v4.0.33 installation, add the following lines to the apache2.conf file:

LoadModule passenger_module /usr/local/lib/ruby/gems/2.1.0/gems/passenger-4.0.33/buildout/apache2/mod_passenger.so 
PassengerRoot /usr/local/lib/ruby/gems/2.1.0/gems/passenger-4.0.33
PassengerDefaultRuby /usr/local/bin/ruby

Restart Apache

The last step is to restart Apache, as follows:

sudo /etc/init.d/apache2 restart


That's all you need to do to install mod_rails on your Cloud Server. The next article Ubuntu Hardy - using mod_rails to serve your application, describes how to create a Ruby on Rails application and serve it using Passenger.

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