I’ve set up a demo instance of peer-observer on demo.peer.observer with two nodes hal and len and opened it up for full public access. Feel free to explore! Huge thanks to https://lclhost.org/ for sponsoring the servers!
The NixOS infra definition can be found in https://github.com/0xB10C/peer-observer-infra-demo which uses GitHub - 0xB10C/peer-observer-infra-library: A NixOS flake providing library functionality for running peer-observer instances. under the hood.