如何在Mongrel下重新启动Rails，而不停止和启动Mongrel [英] How do you restart Rails under Mongrel, without stopping and starting Mongrel

问题描述

有一种方法可以在Mongrel运行时重新启动Rails应用程序(例如，当您更改了插件/配置文件时).或者，快速重新启动Mongrel. Mongrel给出了这些提示，但是您怎么做呢?

Is there a way to restart the Rails app (e.g. when you've changed a plugin/config file) while Mongrel is running. Or alternatively quickly restart Mongrel. Mongrel gives these hints that you can but how do you do it?

**信号准备就绪. TERM =>停止. USR2 =>重新启动. INT =>停止(不重新启动).

** Signals ready. TERM => stop. USR2 => restart. INT => stop (no restart).

**已注册Rails信号. HUP =>重新加载(不重新启动).可能效果不佳.

** Rails signals registered. HUP => reload (without restart). It might not work well.

推荐答案

第一个发现当前杂种pid路径的方法如下:

1st discover the current mongrel pid path with something like:

> ps axf | fgrep杂种

>ps axf | fgrep mongrel

您将看到类似以下的处理行:

you will see a process line like:

ruby​​/usr/lib64/ruby/gems/1.8/gems/swiftiply-0.6.1.1/bin/mongrel_rails start -p 3000 -a 0.0.0.0 -e development -P/home/xxyyzz/rails/myappname/tmp/pids/mongrel.pid -d

采用"-P/home/xxyyzz/rails/myappname/tmp/pids/mongrel.pid"部分，并按以下方式使用它:

Take the '-P /home/xxyyzz/rails/myappname/tmp/pids/mongrel.pid' part and use it like this:

> mongrel_rails重新启动-P/home/xxyyzz/rails/myappname/tmp/pids/mongrel.pid

>mongrel_rails restart -P /home/xxyyzz/rails/myappname/tmp/pids/mongrel.pid

通过PID 18481将USR2发送到Mongrel ...完成.

我用它来从可怕的破损管道"恢复到MySQL问题.

I use this to recover from the dreaded "Broken pipe" to MySQL problem.

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