Is there a way to stop a Puma/Rack server on a HTTP request?

Question

I have a Ruby app (written in Roda, running as a Rack app on Puma) which I want to be able to stop on a click of a button in the browser - basically to stop the server on request. What would be a good way to do that?

Answer 1

我没有对此进行测试，但是由于您可以使用system从控制器运行 shell 命令，因此您可以在页面上设置一个按钮，使用 shell 命令触发特定的控制器操作以停止服务器，例如system "system killall -9 rails"停止运行名称中带有 rails 的应用程序，或者任何更具体的针对您的情况的应用程序。

Answer 2

You can control Puma with process signals. If you are running Puma in a single process, you can simply send the signal to the current process:

Process.kill("TERM", Process.pid)

For a clustered mode you will have to find the PID of Puma master process.

Puma also offers a built-in control/status web server if you don't want to write your own.