Capistrano 3 Rails Config

Overview

This is a sample configuration for deploying Ruby on Rails applications with Capistrano 3.1 including Zero Downtime Deployment with Unicorn and Sidekiq background Workers.

Usage

See http://www.talkingquickly.co.uk/2014/01/deploying-rails-apps-to-a-vps-with-capistrano-v3/ for a tutorial on usage.

Or for more details, this is also the example configuration used in the book Reliably Deploying Rails Applications available on Leanpub: https://leanpub.com/deploying_rails_applications

Minimal Requirements

You should have the following in your Gemfile:

gem 'unicorn', '~> 4.8.3'

group :development do
  gem 'capistrano', '~> 3.2.1'

  # rails specific capistrano functions
  gem 'capistrano-rails', '~> 1.1.0'

  # integrate bundler with capistrano
  gem 'capistrano-bundler'

  # if you are using Rbenv
  gem 'capistrano-rbenv', "~> 2.0"

  # include helper tasks
  gem 'capistrano-cookbook', require: false
end