Rails Capistrano 3自动化部署

gem 'capistrano', '~> 3.1.0'
# rails specific capistrano funcitons
gem 'capistrano-rails', '~> 1.1.0'
# integrate bundler with capistrano
gem 'capistrano-bundler'
# if you are using RBENV
gem 'capistrano-rbenv', "~> 2.0"
# Use the Unicorn app server
gem 'unicorn'

bundle exec cap install

Dir.glob('lib/capistrano/**/*.rb').each { |r| import r }

require 'capistrano/bundler'
require 'capistrano/rbenv'
require 'capistrano/rails/migrations'

  set :application, '--这里是应用名称--'
  set :deploy_user, '--这里是部署用户账号--'
  set :scm, :git
  set :repo_url, '--这里是git地址--'
  set :rbenv_path, "/home/--这里是部署用户账号--/.rbenv"
  set :rbenv_type, :system
  set :rbenv_ruby, '2.2.0' #ruby 版本

  set :rbenv_prefix, "RBENV_ROOT=#{fetch(:rbenv_path)} RBENV_VERSION=#{fetch(:rbenv_ruby)} #{fetch(:rbenv_path)}/bin/rbenv exec"
  set :rbenv_map_bins, %w{rake gem bundle ruby rails}

  set :keep_releases, 5

  set :linked_files, %w{config/database.yml}

  set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

  set :tests, []

  set(:config_files, %w( nginx.conf  database.example.yml log_rotation monit unicorn.rb unicorn_init.sh))

  set(:executable_config_files, %w(unicorn_init.sh))

  set(:symlinks, [{
      source: "nginx.conf",
      link: "/etc/nginx/sites-enabled/"
    },{
      source: "unicorn_init.sh",
      link: "/etc/init.d/unicorn_"
    },{
      source: "log_rotation",
     link: "/etc/logrotate.d/"
    },{
      source: "monit",
      link: "/etc/monit/conf.d/.conf"
    }
  ])

  namespace :deploy do
    before :deploy, "deploy:check_revision"
    before :deploy, "deploy:run_tests"
    after :finishing, 'deploy:cleanup'

    before 'deploy:setup_config', 'nginx:remove_default_vhost'

    after 'deploy:setup_config', 'nginx:reload'

    after 'deploy:setup_config', 'monit:restart'

    after 'deploy:publishing', 'deploy:restart'
  end

set :stage, :production
set :branch, "unicorn" #部署的分支

# This is used in the Nginx VirtualHost to specify which domains
# the app should appear on. If you don't yet have DNS setup, you'll
# need to create entries in your local Hosts file for testing.
set :server_name, "--你部署的服务器ip,或者域名--"

# used in case we're deploying multiple versions of the same
# app side by side. Also provides quick sanity checks when looking
# at filepaths
set :full_app_name, "#{fetch(:application)}"

server '--你部署的服务器ip,或者域名--', user: '--部署的账号名--', roles: %w{web app db}, primary: true

set :deploy_to, "/home/#{fetch(:deploy_user)}/#{fetch(:full_app_name)}"

# dont try and infer something as important as environment from
# stage name.
set :rails_env, :production

# number of unicorn workers, this will be reflected in
# the unicorn.rb and the monit configs
set :unicorn_worker_count, 1 #开启unicorn进程数

# whether we're using ssl or not, used for building nginx
# config file
set :enable_ssl, false