103 lines
2.8 KiB
Nix
103 lines
2.8 KiB
Nix
{ config, flat_hosts, ... }:
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let
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inherit (builtins) filter hasAttr;
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hostToKea = { hostname, mac, ip, ... }: {
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inherit hostname;
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hw-address = mac;
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ip-address = ip;
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};
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localDomain = config.networking.domain;
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hosts =
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filter (h: hasAttr "ip" h && hasAttr "mac" h && h.realm == localDomain)
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flat_hosts;
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in
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{
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networking = {
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defaultGateway = "10.42.42.1";
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nameservers = [ "10.42.42.15" "10.42.42.16" ];
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interfaces.eth0 = {
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useDHCP = false; # It turns out the barber just doesn't shave
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ipv4.addresses = [{
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address = "10.42.42.3";
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prefixLength = 23;
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}];
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};
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};
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# This value determines the NixOS release from which the default
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# settings for stateful data, like file locations and database versions
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# on your system were taken. It‘s perfectly fine and recommended to leave
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# this value at the release version of the first install of this system.
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# Before changing this value read the documentation for this option
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# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
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system.stateVersion = "21.11"; # Did you read the comment?
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networking.firewall.allowedUDPPorts = [ 67 ];
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# services.prometheus.exporters.kea = {
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# enable = true;
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# openFirewall = true;
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# controlSocketPaths = [ "/run/kea/kea-dhcp4.socket" ];
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# };
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services.kea.dhcp4 = {
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enable = true;
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settings = {
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authoritative = true;
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valid-lifetime = 4000;
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rebind-timer = 2000;
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renew-timer = 1000;
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interfaces-config.interfaces = [ "eth0" ];
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# control-socket = {
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# socket-type = "unix";
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# socket-name = "/run/kea/kea-dhcp4.socket";
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# };
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# failed to initialize Kea server: configuration error using file '/etc/kea/dhcp4-server.conf': cannot create socket lockfile, /run/kea/kea-dhcp4.socket.lock, : No such file or directory
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lease-database = {
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name = "/var/lib/kea/dhcp4.leases";
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persist = true;
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type = "memfile";
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};
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option-data = [
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{
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name = "subnet-mask";
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data = "255.255.254.0";
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}
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{
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name = "broadcast-address";
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data = "10.42.43.255";
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}
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{
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name = "routers";
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data = "10.42.42.1";
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}
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{
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name = "domain-name-servers";
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data = "10.42.42.15, 10.42.42.16";
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}
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{
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name = "domain-name";
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data = localDomain;
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}
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{
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name = "domain-search";
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data = localDomain;
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}
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];
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host-reservation-identifiers = [ "hw-address" ];
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subnet4 = [{
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id = 1;
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pools = [{ pool = "10.42.43.1 - 10.42.43.254"; }];
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subnet = "10.42.42.0/23";
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reservations = map hostToKea hosts;
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}];
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};
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};
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}
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