#!/usr/bin/env bash set -euo pipefail # This script demonstrates how to setup a nix-bitcoin node in a NixOS container. # Running this script leaves no traces on your host system. # This demo is a template for your own experiments. # Feel free to modify or to run nix-shell and execute individual statements of this # script in the interactive shell. if [[ $(sysctl -n net.ipv4.ip_forward) != 1 ]]; then echo "Error: IP forwarding (net.ipv4.ip_forward) is not enabled" exit 1 fi if [[ ! -e /run/current-system/nixos-version ]]; then echo "Error: This script needs NixOS to run" exit 1 fi if [[ ! -v IN_NIX_SHELL ]]; then echo "Running script in nix shell env..." exec nix-shell --run "${BASH_SOURCE[0]}" fi # Cleanup on exit cleanup() { echo echo "Deleting container..." sudo extra-container destroy demo-node } trap "cleanup" EXIT # Build container. # You can re-run this command with a changed container config. # The running container is then switched to the new config. # Learn more: https://github.com/erikarvstedt/extra-container # sudo extra-container create --start <<'EOF' { pkgs, lib, ... }: let containerName = "demo-node"; # container name length is limited to 11 chars localAddress = "10.250.0.2"; # container address hostAddress = "10.250.0.1"; in { containers.${containerName} = { privateNetwork = true; inherit localAddress hostAddress; config = { pkgs, config, lib, ... }: { imports = [ ]; # Speed up evaluation documentation.nixos.enable = false; }; }; # Allow WAN access systemd.services."container@${containerName}" = { preStart = "${pkgs.iptables}/bin/iptables -w -t nat -A POSTROUTING -s ${localAddress} -j MASQUERADE"; # Delete rule postStop = "${pkgs.iptables}/bin/iptables -w -t nat -D POSTROUTING -s ${localAddress} -j MASQUERADE || true"; }; } EOF # Run command in container c() { sudo extra-container run demo-node -- "$@" | cat; } echo echo "Bitcoind service:" c systemctl status bitcoind echo echo "Bitcoind network:" c bitcoin-cli getnetworkinfo echo echo "lightning-cli state:" c lightning-cli getinfo echo echo "Node info:" c nodeinfo echo echo "Bitcoind data dir:" sudo ls -al /var/lib/containers/demo-node/var/lib/bitcoind # Cleanup happens at exit (see above)