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nixpkgs/nixos/modules/services/networking/corerad.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.corerad;
writeTOML = name: x:
pkgs.runCommandNoCCLocal name {
passAsFile = ["config"];
config = builtins.toJSON x;
buildInputs = [ pkgs.go-toml ];
} "jsontoml < $configPath > $out";
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in {
meta.maintainers = with maintainers; [ mdlayher ];
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options.services.corerad = {
enable = mkEnableOption "CoreRAD IPv6 NDP RA daemon";
settings = mkOption {
type = types.uniq types.attrs;
example = literalExample ''
{
interfaces = [
# eth0 is an upstream interface monitoring for IPv6 router advertisements.
{
name = "eth0";
monitor = true;
}
# eth1 is a downstream interface advertising IPv6 prefixes for SLAAC.
{
name = "eth1";
advertise = true;
prefix = [{ prefix = "::/64"; }];
}
];
# Optionally enable Prometheus metrics.
debug = {
address = "localhost:9430";
prometheus = true;
};
}
'';
description = ''
Configuration for CoreRAD, see <link xlink:href="https://github.com/mdlayher/corerad/blob/master/internal/config/default.toml"/>
for supported values. Ignored if configFile is set.
'';
};
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configFile = mkOption {
type = types.path;
example = literalExample "\"\${pkgs.corerad}/etc/corerad/corerad.toml\"";
description = "Path to CoreRAD TOML configuration file.";
};
package = mkOption {
default = pkgs.corerad;
defaultText = literalExample "pkgs.corerad";
type = types.package;
description = "CoreRAD package to use.";
};
};
config = mkIf cfg.enable {
# Prefer the config file over settings if both are set.
services.corerad.configFile = mkDefault (writeTOML "corerad.toml" cfg.settings);
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systemd.services.corerad = {
description = "CoreRAD IPv6 NDP RA daemon";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
LimitNPROC = 512;
LimitNOFILE = 1048576;
CapabilityBoundingSet = "CAP_NET_ADMIN CAP_NET_RAW";
AmbientCapabilities = "CAP_NET_ADMIN CAP_NET_RAW";
NoNewPrivileges = true;
DynamicUser = true;
Type = "notify";
NotifyAccess = "main";
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ExecStart = "${getBin cfg.package}/bin/corerad -c=${cfg.configFile}";
Restart = "on-failure";
RestartKillSignal = "SIGHUP";
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};
};
};
}