deploy.rb

require 'bundler/capistrano'
require 'capistrano-unicorn'
require 'sidekiq/capistrano'
require 'whenever/capistrano'
load 'config/recipes/base'
load 'config/recipes/cache'
load 'config/recipes/postgresql'
load 'config/recipes/redis'
load 'config/recipes/rails'
load 'config/recipes/seed'
load 'config/recipes/tail'

# Deployment Server
server "xxx.xxx.xxx.xxx", :web, :app, :db, primary: true

default_run_options[:pty] = true
default_run_options[:shell] = '/bin/bash --login'

set :application, "qs"
set :user, "deployer"
set :deploy_to, "/home/#{user}/apps/#{application}"
set :deploy_via, :remote_cache
set :use_sudo, false
set :default_environment, { 'PATH' => "$HOME/.rbenv/shims:$HOME/.rbenv/bin:$PATH" }
set :scm, "git"
set :branch, "master"
set :bundle_without, [:darwin, :development, :test]
set :bundle_cmd, 'bundle'
set :sidekiq_cmd, "#{bundle_cmd} exec sidekiq"
set :sidekiqctl_cmd, "#{bundle_cmd} exec sidekiqctl"
set :sidekiq_timeout, 10
set :sidekiq_role, :app
set :sidekiq_pid, "#{current_path}/tmp/pids/sidekiq.pid"
set :sidekiq_processes, 1
set :whenever_command, "bundle exec whenever"

set_default(:unicorn_pid) { "#{shared_path}/pids/unicorn.pid" }
set_default(:unicorn_pid) { "#{shared_path}/pids/unicorn.pid" }
set_default(:unicorn_workers, 7)

ssh_options[:forward_agent] = true

after "deploy", "deploy:migrate"
after "deploy", "deploy:cleanup"

namespace :deploy do
  %w[start stop restart reload].each do |command|
    desc "#{command} unicorn server"
    task command, roles: :app, except: {no_release: true} do
      run "/etc/init.d/unicorn_#{application} #{command}"
    end
  end

  task :setup_config, roles: :app do
    sudo "ln -nfs #{current_path}/config/nginx.conf /etc/nginx/sites-enabled/#{application}"
    sudo "ln -nfs #{current_path}/config/unicorn_init.sh /etc/init.d/unicorn_#{application}"
    run "mkdir -p #{shared_path}/config"
    put File.read("config/database.example.yml"), "#{shared_path}/config/database.yml"
    puts "Now edit the config files in #{shared_path}."
  end
  after "deploy:setup", "deploy:setup_config"

  task :symlink_config, roles: :app do
    run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml"
  end
  after "deploy:finalize_update", "deploy:symlink_config"

  desc "Make sure local git is in sync with remote."
  task :check_revision, roles: :web do
    unless `git rev-parse HEAD` == `git rev-parse origin/#{branch}`
      puts "WARNING: HEAD is not the same as origin/#{branch}"
      puts "Run `git push` to sync changes."
      exit
    end
  end

  desc 'Load DB schema - CAUTION: rewrites database!'
  task :load_schema, :roles => :app do
    run "cd #{current_path}; bundle exec rake db:schema:load RAILS_ENV=#{rails_env}"
  end
  before "deploy", "deploy:check_revision"
end

after "deploy:restart", "unicorn:restart"