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?

CodePudding user response：

I have not tested this but since you can run shell commands from a controller using system, you could setup a button on your page triggering a specific controller action with the shell command to stop your server, ex something like system "system killall -9 rails" to stop running apps with rails in their name, or anything more specific to your case.

CodePudding user response：

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.