nixos-config/config/dns.nix

70 lines
1.7 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
hostname = config.instance.hostname;
domain = config.instance.local-domain;
cfg = config.fudo.domains.${domain};
served-domain = cfg.primary-nameserver != null;
is-primary = hostname == cfg.primary-nameserver;
create-srv-record = port: hostname: {
port = port;
host = hostname;
};
in {
config = {
fudo.dns = mkIf is-primary (let
primary-ip = pkgs.lib.network.host-ipv4 config hostname;
all-ips = pkgs.lib.network.host-ips config hostname;
in {
enable = true;
identity = "${hostname}.${domain}";
nameservers = {
ns1 = {
ipv4-address = primary-ip;
description = "Primary ${domain} nameserver";
};
};
# Deliberately leaving out localhost so the primary nameserver
# can use a custom recursor
listen-ips = all-ips;
domains = {
${domain} = {
dnssec = true;
default-host = primary-ip;
gssapi-realm = cfg.gssapi-realm;
mx = optional (cfg.primary-mailserver != null)
cfg.primary-mailserver;
# TODO: there's no guarantee this exists...
dmarc-report-address = "dmarc-report@${domain}";
zone-definition = let
zone = config.fudo.zones.${domain};
in zone // {
srv-records = {
tcp = {
domain = [{
host = "ns1.${domain}";
port = 53;
}];
};
udp = {
domain = [{
host = "ns1.${domain}";
port = 53;
}];
};
};
};
};
};
});
};
}