* Clara Engler via tor-relays:

What is your setup? Do you use the package/module from nixpkgs? How do you run multiple relays?

I found setting up a Tor relay on NixOS to be very easy. The following configuration suffices: { services.tor = { enable = true; openFirewall = true; relay = { enable = true; role = "relay"; }; settings = { ExitRelay = false; Nickname = "mytorrelay"; ORPort = 12345; }; }; } I have not yet tried to run multiple relays. Not sure if this is currently possible? You might want to try to ask the NixOS package maintainers on GitHub about this.

Do you override the nixpkgs?

The package updates on NixOS-unstable are usually updated very quickly, so I see no need to use overrides. -Ralph

I use NixOS containers to run multiple relays: # > sudo systemctl -M tor-1 status tor # > sudo journalctl -M tor-1 -eu tor.service containers = let mkTorContainer = { stateDir, orPort, controlPort, }: { autoStart = true; ephemeral = true; # impermanence bindMounts = { "/var/lib/tor/" = { hostPath = stateDir; isReadOnly = false; }; }; config = {...}: { services.tor = { enable = true; relay = { enable = true; role = "exit"; }; settings = { Nickname = "DXV7520"; ContactInfo = "admin@caspervk.net"; ORPort = [ { addr = "31.133.0.235"; port = orPort; } { addr = "[2001:67c:2044:c141::1:6431:1]"; port = orPort; } ]; ControlPort = controlPort; ExitRelay = true; IPv6Exit = true; ExitPolicy = [ "reject *:22" "reject *:25" "accept *:*" ]; MyFamily = builtins.concatStringsSep "," [ "1B9D2C9E0EFE2C6BD23D62B2FCD145886AD242D1" # /var/lib/tor-1/fingerprint "293CE00D11B1D8B99AE8811CBDFDA3F353353710" # /var/lib/tor-2/fingerprint "27FF3E6979EF6570B9EB3B53B11964FE08F36F19" # /var/lib/tor-3/fingerprint "C2041A1CE9FDFDB13572D946A3055310FD48A595" # /var/lib/tor-4/fingerprint ]; }; }; system.stateVersion = config.system.stateVersion; }; }; in { tor-1 = mkTorContainer { stateDir = "/var/lib/tor-1/"; orPort = 443; controlPort = 9051; }; tor-2 = mkTorContainer { stateDir = "/var/lib/tor-2/"; orPort = 444; controlPort = 9052; }; tor-3 = mkTorContainer { stateDir = "/var/lib/tor-3/"; orPort = 445; controlPort = 9053; }; tor-4 = mkTorContainer { stateDir = "/var/lib/tor-4/"; orPort = 446; controlPort = 9054; }; }; Full config: https://git.caspervk.net/caspervk/nixos/src/branch/master/hosts/tor/tor.nix