From within ruby: How do I spawn a process in a different control group than the current?

Question

Using Kernel.spawn I can start a new process from within ruby, executing som arbitrary shell commands. The new process will appear in the same control group as the ruby process. How can I change that to have it go in it's own?

The reason for me wanting this is that my ruby process is managed by systemd and I don't want any of these particular shell command processes to be cleaned up/terminated when the ruby process is restarted.

Answer 1

I didn't find any way to do this. Instead I changed the KillMode of my systemd script to process, this solved the problem: Can't detach child process when main process is started from systemd