[erlang-questions] idiomatic way to do hot code reloading with erlang.mk + relx

[t x]

Hi,

This is what I currently understand:

* how to use erlang.mk (from playing with examples in cowboy)
* how to use relx (from playing with examples in cowboy)

* how hot code reloading works in Erlang (from chapter in Programming Erlang)

* how to attach my emacs to an existing erlang node (via help from mailing list)


This is what I currently do not understand:

* suppose I have something I'm running via erlang.mk + relx, i.e.:

make; ./_rel/bin/websocket_example console

* how do I:

  1) give it a -sname so I can attach to it from another erlang node?

  2) do hot code reloading on something that is already running via relx


In particular, I'd love to read a guide / tutorial on what to keep in
mind, gotchas, tips / tricks, etc ...

Thanks!