Files
nixos/hosts/unstable/genesis/networking.nix
T
root df2f9d69fe
buildbot/nix-eval Build done. (1 warning)
fix: address PR feedback + expand infrastructure coverage
- Replace unpoller-credentials plain Secret with ExternalSecret
  pulling from Bitwarden item 15bfc957-5de5-49b2-ab6c-b41800e71564
  via bitwarden-login ClusterSecretStore (username + password)
- Pull UP_UNIFI_DEFAULT_USER from secret as well (was hardcoded)

- Add OpenWRT access point (10.42.0.3) to genesis DNS hosts file
  as ap.thehellings.lan (discovered during network scan)

- Add blackbox exporter to genesis (port 9115, ICMP module)
  for probing non-NixOS infrastructure that has no node_exporter:
  OpenWRT AP, Joel, pve1, chronicles, nas1, odoo, mattermost,
  homeassistant, USW-Pro-HD-24 UniFi switch

- Add infra_ping scrape job to Prometheus using blackbox prober
  targeting all non-NixOS LAN hosts via genesis blackbox exporter
2026-03-25 09:25:16 -05:00

136 lines
2.7 KiB
Nix

{
config,
pkgs,
metadata,
...
}:
let
lan = "enp1s0";
lanIP = metadata.hosts.${config.networking.hostName}.ip;
iot = "enp2s0";
iotIP = "192.168.66.250";
routerIP = metadata.infra.gw;
extraHosts = builtins.readFile ./net/hosts;
proxyPort = 3128;
dnsPort = 53;
dhcpPort = 67;
dnsServers = [
#"9.9.9.9" # Quad 9
#"1.1.1.1" # Cloudflare
#"1.0.0.1" # Cloudflare
#"149.112.112.112" # Quad 9
metadata.infra.gw # Currently using our UniFi router for DNS as well
];
in
{
greg.tailscale = {
enable = true;
tags = [ "home" ];
};
# Really, why do I still have to force-disable this crap?
boot.kernel.sysctl = {
"net.ipv6.conf.${lan}.disable_ipv6" = true;
"net.ipv6.conf.${iot}.disable_ipv6" = true;
"net.ipv6.conf.lo.disable_ipv6" = true;
};
networking = {
defaultGateway = metadata.infra.gw;
enableIPv6 = false;
networkmanager.enable = pkgs.lib.mkForce false;
nameservers = dnsServers;
interfaces = {
# This is our LAN port
"${lan}" = {
useDHCP = false;
ipv4.addresses = [
{
address = "${lanIP}";
prefixLength = 16;
}
];
};
"${iot}" = {
useDHCP = false;
ipv4.addresses = [
{
address = "${iotIP}";
prefixLength = 24;
}
];
};
};
firewall = {
enable = false;
allowedUDPPorts = [
dhcpPort
dnsPort
];
allowedTCPPorts = [
dnsPort
proxyPort
80
];
};
nftables.enable = false;
};
environment.etc."hosts.d/local".text = extraHosts;
services = {
kea = {
dhcp4 = (
import ./networking/dhcp.nix {
inherit
iot
lan
lanIP
routerIP
;
}
);
};
#########
# dnsmasq config
########
dnsmasq = {
enable = true;
settings = {
domain = "thehellings.lan";
expand-hosts = true;
log-queries = true;
no-hosts = true; # Do not read /etc/hosts, which makes genesis resolve to 127.0.0.2
addn-hosts = "/etc/adblock_hosts";
hostsdir = "/etc/hosts.d/";
server = dnsServers;
};
};
prometheus.exporters = {
dnsmasq.enable = true;
blackbox = {
enable = true;
openFirewall = true;
configFile = pkgs.writeText "blackbox.yml" ''
modules:
icmp:
prober: icmp
timeout: 5s
icmp:
preferred_ip_protocol: ip4
'';
};
};
}; # End of services configuration
environment.systemPackages = with pkgs; [
bind
curl # Used by dnsmasq fetching
sqlite
];
}