deploy.rb

require 'capistrano_colors'
require 'capistrano/ext/multistage'
require 'bundler/capistrano'
require "rvm/capistrano"
require 'sidekiq/capistrano'

set :rvm_type, :system
set :rvm_ruby_string, :release_path

before 'deploy:setup', 'rvm:install_ruby'

set :default_stage, "staging"
default_run_options[:pty] = true

set :domain, "xxx.xxx.xxx.xxx"
set :repository,  "git@github.com:myrepo.git"
set :use_sudo, false

set :scm, :git
set :git_enable_submodules, 1

set :deploy_via, "remote_cache"
ssh_options[:forward_agent] = true
ssh_options[:paranoid] = false
ssh_options[:user] = 'rails'
set :keep_releases, 10

set :user, "rails"
set :runner, user

set :rake, 'bundle exec rake'

role :app, domain
role :web, domain
role :db,  domain, :primary => true

namespace :deploy do
  task :default do
    migrations
		cleanup
	end
	
	task :start do ; end
  task :stop do ; end
  
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "touch #{File.join(current_path,'tmp','restart.txt')}"
  end

  namespace :assets do
    task :precompile, :roles => :web, :except => { :no_release => true } do
      from = source.next_revision(current_revision)
      if capture("cd #{latest_release} && #{source.local.log(from)} vendor/assets/ app/assets/ | wc -l").to_i > 0
        run %Q{cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{asset_env} assets:precompile}
      else
        logger.info "Skipping asset pre-compilation because there were no asset changes"
      end
    end
  end
  
end

task :update_config, :roles => [:app] do
  run "cp -Rf #{shared_path}/config/* #{release_path}/config/"
  run "ln -s #{shared_path}/tmp #{release_path}/tmp"
end

task :create_session_dir, :roles => [:app] do
  session_dir = "#{release_path}/tmp/sessions"
  run "mkdir #{session_dir}" unless File.exists? session_dir
end

after "deploy:update_code", :update_config
after "deploy:update_code", :create_session_dir