CapistranoでUnicornの起動と停止と再起動

deploy-unicorn.rb

namespace :deploy do
  unicorn_start_script = "cd #{current_path} && BUNDLE_GEMFILE=#{current_path}/Gemfile bundle exec unicorn_rails -c #{current_path}/config/unicorn.rb -E production -D"
  
  task :start, :roles => :app, :except => { :no_release => true } do
    run "#{unicorn_start_script}"
  end
 
  task :stop, :roles => :app, :except => { :no_release => true } do
    run "kill -KILL -s QUIT `cat #{shared_path}/pids/unicorn.pid`"
  end
 
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "if [ -e #{shared_path}/pids/unicorn.pid ]; then kill -USR2 `cat #{shared_path}/pids/unicorn.pid`; else #{unicorn_start_script}; fi"
    # run "kill -USR2 `cat #{shared_path}/pids/unicorn.pid`"
  end
  
end