Capistrano deploy.rb

deploy.rb

set :repository,  "[email protected]:repo/repo.git"
set :user, "deploy"
set :use_sudo, false
set :scm, :git
set :keep_releases, 5
set :domain, "000.000.000.000"
set :application, "my_app"
set :rails_env, "production"
set :branch, "master"
set :deploy_to, "/var/www/#{application}"
set :port, 22
server domain, :app, :web, :db, :primary => true

namespace :deploy do
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "touch #{shared_path}/#{application}-restart.txt"
  end

  desc "Reload the database with seed data"
  task :seed do
    run "cd #{current_path}; bundle exec rake db:seed RAILS_ENV=#{rails_env}"
  end

  namespace :web do
    desc "Present a maintenance page to visitors"
    task :disable, :roles => :web, :except => { :no_release => true } do
      on_rollback { run "rm #{shared_path}/system/maintenance.html" }

      template = File.read("./public/503.html")

      put template, "#{shared_path}/system/maintenance.html", :mode => 0644
    end
  end

  namespace :assets do
    desc 'Install asset dependencies'
    task :install, roles: :app do
      run "cd #{latest_release} && bower install --no-color"
    end
  end
end

namespace :log do
  namespace :tail do
    desc "Show the production log"
    task :app, roles: :app do
      run "tail -f #{shared_path}/log/production.log" do |channel, stream, data|
        puts "#{data}"
        break if stream == :err
      end
    end
  end
end

namespace :db do
  desc "Create database yaml in shared path"
  task :configure do
    set :database do
      Capistrano::CLI.password_prompt "Database: "
    end

    set :database_username do
      Capistrano::CLI.password_prompt "Database Username: "
    end

    set :database_password do
      Capistrano::CLI.password_prompt "Database Password: "
    end

    set :database_host do
      Capistrano::CLI.password_prompt "Database Host: "
    end

    db_config = <<-EOF
      production:
        database: #{database}
        adapter: mysql2
        encoding: utf8
        reconnect: false
        pool: 5
        username: #{database_username}
        password: #{database_password}
        host: #{database_host}
    EOF

    run "mkdir -p #{shared_path}/config"
    put db_config, "#{shared_path}/config/database.yml"
  end

  desc "Make symlink for database yaml"
  task :symlink do
    run "ln -nfs #{shared_path}/config/database.yml #{latest_release}/config/database.yml"
  end
end

before 'deploy:assets:precompile',  'db:symlink'
before 'deploy:assets:precompile',  'deploy:assets:install'
before 'deploy:setup',              'db:configure'