erik
fd3ccf5f07
- services/pihole.nix: official pihole/pihole:2026.07.2 via podman, host net, caps NET_ADMIN/NET_RAW/SYS_NICE/CHOWN; FTLCONF_* env config (upstream unbound, DHCP 50-200, static lease jupiter, .sol domain, local records) - unbound: resolveLocalQueries=false (was hijacking resolv.conf to :53 -> boot DNS deadlock; the real root cause of the earlier failures too) - password via sops FTLCONF env file; /var/lib/pihole created via tmpfiles - VM-verified: mercury.sol/jupiter.sol/external all resolve, 0 restarts
45 lines
2.1 KiB
Nix
45 lines
2.1 KiB
Nix
{ config, pkgs, lib, ... }:
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# mercury — Raspberry Pi 3B+ (aarch64). Network DNS + DHCP (+ adblock).
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# Boots from an SD image (see flake: nixosConfigurations.mercury), so there is
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# no disko / hardware-configuration here — the sd-image module provides them.
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{
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imports = [
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../../common.nix # shared base: user / ssh / nix / firewall
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./secrets.nix # sops-nix: darman password (age key on boot part.)
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../../services/unbound.nix # local recursive resolver (127.0.0.1:5335)
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../../services/pihole.nix # DNS adblock + DHCP (declarative static leases)
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];
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networking.hostName = "mercury";
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# ---- Static networking ----
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# A DNS/DHCP server must have a fixed address. Fill in the Pi's real values
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# (from `ip -brief a` / `ip route` on the running Pi). eth0 = the Pi's NIC.
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networking.useDHCP = false;
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networking.usePredictableInterfaceNames = false; # keep it named eth0
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networking.interfaces.eth0.ipv4.addresses = [
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{ address = "10.0.0.10"; prefixLength = 24; } # the Pi's current IP
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];
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# VERIFY with `ip route` on the Pi — assuming the router is .1.
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networking.defaultGateway = { address = "10.0.0.1"; interface = "eth0"; };
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# Resolvers for the Pi's OWN lookups (not the LAN service). Kept public so the
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# host resolves during boot without depending on its own pihole/unbound.
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networking.nameservers = [ "1.1.1.1" "9.9.9.9" ];
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# DNS adblock + DHCP (pihole) and the recursive resolver (unbound) come from
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# the imported service modules. pihole forwards to unbound at 127.0.0.1:5335.
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# ---- pihole web admin password (from sops) ----
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# The pihole container reads FTLCONF_* env vars. Render an env file from the
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# sops secret and feed it to the container — password stays out of repo/store.
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sops.secrets.pihole_webpassword = { };
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sops.templates."pihole.env".content =
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"FTLCONF_webserver_api_password=${config.sops.placeholder.pihole_webpassword}";
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virtualisation.oci-containers.containers.pihole.environmentFiles =
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[ config.sops.templates."pihole.env".path ];
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# Do not modify after first flash.
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system.stateVersion = "26.05";
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}
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