unicorn 服务

config/unicorn/production.rb

@@ -0,0 +1,28 @@
+app_path = "/home/ruby/wblog/current"
+
+worker_processes   1
+preload_app        true
+timeout            180
+listen             '/tmp/unicorn_wblog.sock'
+user               'user', 'user'
+working_directory  app_path
+pid                "#{app_path}/tmp/pids/unicorn_wblog.pid"
+stderr_path        "log/unicorn.log"
+stdout_path        "log/unicorn.log"
+
+before_fork do |server, worker|
+    ActiveRecord::Base.connection.disconnect!
+
+    old_pid = "#{server.config[:pid]}.oldbin"
+    if File.exists?(old_pid) && server.pid != old_pid
+      begin
+        Process.kill("QUIT", File.read(old_pid).to_i)
+      rescue Errno::ENOENT, Errno::ESRCH
+        # someone else did our job for us
+      end
+    end
+end
+
+after_fork do |server, worker|
+  ActiveRecord::Base.establish_connection
+end