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add deploy-container.sh

This commit is contained in:
Erik Arvstedt 2020-02-26 17:11:23 +01:00
parent 5dadea310c
commit abcee651d3
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2 changed files with 91 additions and 1 deletions
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83
examples/deploy-container.sh Executable file
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@ -0,0 +1,83 @@
#!/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.${containerName} = {
privateNetwork = true;
inherit localAddress hostAddress;
config = { pkgs, config, lib, ... }: {
imports = [
<nix-bitcoin/examples/configuration.nix>
<nix-bitcoin/modules/secrets/generate-secrets.nix>
];
# Speed up evaluation
documentation.nixos.enable = false;
};
};
# Allow WAN access
systemd.services."container@${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)

9
examples/shell.nix
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@ -8,21 +8,28 @@ let
nixpkgs-path = (import "${toString nix-bitcoin-path}/pkgs/nixpkgs-pinned.nix").nixpkgs;
nixpkgs = import nixpkgs-path {};
nix-bitcoin = nixpkgs.callPackage nix-bitcoin-path {};
extraContainer = nixpkgs.callPackage (builtins.fetchTarball {
url = "https://github.com/erikarvstedt/extra-container/archive/6cced2c26212cc1c8cc7cac3547660642eb87e71.tar.gz";
sha256 = "0qr41mma2iwxckdhqfabw3vjcbp2ffvshnc3k11kwriwj14b766v";
}) {};
in
with nixpkgs;
stdenv.mkDerivation rec {
name = "nix-bitcoin-environment";
buildInputs = [ nix-bitcoin.nixops19_09 figlet ];
buildInputs = [ nix-bitcoin.nixops19_09 figlet extraContainer ];
shellHook = ''
export NIX_PATH="nixpkgs=${nixpkgs-path}:nix-bitcoin=${toString nix-bitcoin-path}:."
# ssh-agent and nixops don't play well together (see
# https://github.com/NixOS/nixops/issues/256). I'm getting `Received disconnect
# from 10.1.1.200 port 22:2: Too many authentication failures` if I have a few
# keys already added to my ssh-agent.
export SSH_AUTH_SOCK=""
figlet "nix-bitcoin"
(mkdir -p secrets; cd secrets; ${nix-bitcoin.generate-secrets})
'';