Rails3.2 + Nginx + Unicorn + Capisterno Unicorn設定ファイル

unicorn.rb

# -*- coding: utf-8 -*-
worker_processes 2
working_directory "/var/www/raiqoo/current"

listen "/tmp/unicorn.sock"
pid "/tmp/unicorn.pid"

timeout 60

preload_app true # ダウンタイムをなくす

stdout_path "/var/www/raiqoo/current/log/unicorn.stdout.log"
stderr_path "/var/www/raiqoo/current/log/unicorn.stderr.log"

GC.respond_to?(:copy_on_write_friendly=) and GC.copy_on_write_friendly = true

before_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!

  old_pid = "#{server.config[:pid]}.oldbin"
    if old_pid != server.pid
      begin
        sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
        Process.kill(sig, File.read(old_pid).to_i)
      rescue Errno::ENOENT, Errno::ESRCH
      end
    end

    sleep 1
  end

after_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
end