nix-bitcoin/modules/presets/secure-node.nix

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{ config, lib, pkgs, ... }:
with lib;
let
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cfg = config.services;
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operatorName = config.nix-bitcoin.operator.name;
mkHiddenService = map: {
map = [ map ];
version = 3;
};
in {
imports = [
../modules.nix
../nodeinfo.nix
../nix-bitcoin-webindex.nix
./enable-tor.nix
];
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config = {
# For backwards compatibility only
nix-bitcoin.secretsDir = mkDefault "/secrets";
networking.firewall.enable = true;
nix-bitcoin.security.hideProcessInformation = true;
services.tor.hiddenServices.sshd = mkHiddenService { port = 22; };
nix-bitcoin.onionAddresses.access.${operatorName} = [ "sshd" ];
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# bitcoind
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services.bitcoind = {
enable = true;
listen = true;
dataDirReadableByGroup = mkIf cfg.electrs.high-memory true;
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assumevalid = "00000000000000000000e5abc3a74fe27dc0ead9c70ea1deb456f11c15fd7bc6";
addnodes = [ "ecoc5q34tmbq54wl.onion" ];
discover = false;
addresstype = "bech32";
dbCache = 1000;
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# higher rpcthread count due to reports that lightning implementations fail
# under high bitcoind rpc load
rpc.threads = 16;
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};
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# liquidd
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services.liquidd = {
rpcuser = "liquidrpc";
prune = 1000;
validatepegin = true;
listen = true;
};
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# Backups
services.backups = {
program = "duplicity";
frequency = "daily";
};
environment.systemPackages = with pkgs; [
tor
jq
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qrencode
];
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nix-bitcoin.operator.enable = true;
users.users.${operatorName} = {
openssh.authorizedKeys.keys = config.users.users.root.openssh.authorizedKeys.keys;
};
# Enable nixops ssh for operator (`nixops ssh operator@mynode`) on nixops-vbox deployments
systemd.services.get-vbox-nixops-client-key =
mkIf (builtins.elem ".vbox-nixops-client-key" config.services.openssh.authorizedKeysFiles) {
postStart = ''
cp "${config.users.users.root.home}/.vbox-nixops-client-key" "${config.users.users.${operatorName}.home}"
'';
};
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};
}