unicorn.rb

base_dir = "/var/www/hoge_server"
worker_processes 20
working_directory "#{base_dir}/current"
shared = "#{base_dir}/shared"
listen "#{shared}/tmp/sockets/unicorn.sock"
timeout 30
pid "#{shared}/tmp/pids/unicorn.pid"

stderr_path "#{shared}/log/unicorn.stderr.log"
stdout_path "#{shared}/log/unicorn.stdout.log"

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

check_client_connection false

before_exec do |server|
  ENV['BUNDLE_GEMFILE'] = "#{base_dir}/current/Gemfile"
end

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