Systemd and Distillery commands


I’ve got an Elixir app released with Distillery, running under systemd supervision. The app is a systemd unit configured by following steps included in Distillery docs and I know just the basics of systemd. How can I invoke a one of commands provided by Distillery in this case?
Do I need to set up some linux’ named pipe and wrappers to forward commands to the background instance?

Do you intend to issue these commands from the production server? Which commands you have in mind?

I just wanted to test out some features of Distillery like remote_attach on a sandbox environment.

You just run them from the binary of where-ever you installed it. This is not something systemd can even expose at all via a service.