Rails%203%20In%20Action

398 CHAPTER 14 Deployment
The final line of this file is the most important, as it loads the config/deploy.rb file.
This file contains the configuration for deploying your application. Everything in this
file dictates how your application is deployed. We’ll go through it with you line by line,
beginning with these two lines:
set :application, "set your application name here"
set :repository, "set your repository location here"
When you call set in Capistrano, it sets a variable you (or Capistrano itself) can reference
later. The application variable here should be the name of your application
and the repository variable should be the path to your application. Change these
lines to this:
set :application, "ticketee"
set :repository, "git://github.com/rails3book/ticketee.git"
Deploying a branch
When you deploy your application to the server, it will read from the master branch.
If you’d like to change this, set the branch using this line in your configuration:
set :branch, "production"
You would also need to create this new branch in the GitHub repository called production
with the git checkout -b production and git push origin production
commands.
For a good branching model, check out this post: http://nvie.com/posts/
a-successful-git-branching-model/.
On the next line of config/deploy.rb there’s the scm setting:
set :scm, :subversion
You’re going to use Git and not Subversion in this case, so change the line to this:
set :scm, :git
On the next few lines there are a couple of roles defined. These roles point to
� web—The server or servers responsible for serving requests for your application
� app—The server or servers where the application’s code is hosted
� db—The server or servers where the database for the application is hosted
Right now we won’t worry about multiple-server setups, focusing only on having everything
on the one box. Your web, app, and db roles are all the same server in this
instance. Therefore, you can replace those three lines with this:
role :web, "[your-server]"
role :app, "[your-server]"
role :db, "[your-server]", :primary => true