machines/fuuko/configuration.nix

@@ -5,9 +5,11 @@
     ../../modules
     ../../users/simon
 
+    ./services/fritzbox-exporter.nix
     ./services/media-backup.nix
     ./services/media.nix
     ./services/torrent.nix
+    ./services/wordclock-dimmer.nix
   ];
 
   sbruder = {

machines/fuuko/services/fritzbox-exporter.nix

@@ -0,0 +1,9 @@
+{ config, ... }:
+
+{
+  services.prometheus.exporters.fritzbox = {
+    enable = true;
+    gatewayAddress = "192.168.100.1";
+    listenAddress = config.sbruder.wireguard.home.address;
+  };
+}

machines/renge/configuration.nix

@@ -23,7 +23,6 @@
     ./services/psycho-power-papagei.de
     ./services/sbruder.xyz
     ./services/schabernack.nix
-    ./services/wordclock-dimmer.nix
   ];
 
   sbruder = {

machines/renge/services/prometheus.nix

@@ -80,6 +80,10 @@ in
           regex = "(.*)\\.vpn\\.sbruder\\.de:9561";
         };
       }
+      {
+        job_name = "fritzbox";
+        static_configs = mkStaticTarget "fuuko.vpn.sbruder.de:9133";
+      }
       (
         let
           listenerCfg = (lib.elemAt config.services.matrix-synapse.settings.listeners 0);
@@ -152,6 +156,9 @@ in
       ];
   };
 
+  # get rid of “could not call action: authorization required” every scrape
+  systemd.services.prometheus-fritzbox-exporter.serviceConfig.StandardOutput = "null";
+
   # exporters that are not part of nixpkgs’ prometheus infrastructure
   services.hcloud_exporter = {
     enable = true;

pkgs/prometheus-fritzbox-exporter/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, buildGoModule, fetchFromGitHub, nixosTests }:
+
+buildGoModule rec {
+  pname = "fritzbox-exporter";
+  version = "unstable-2021-03-03";
+  rev = "6d66f6b8e47878c61feb710e36306fe714350658";
+
+  src = fetchFromGitHub {
+    inherit rev;
+    owner = "mxschmitt";
+    repo = "fritzbox_exporter";
+    sha256 = "0n9fwslcwgfghscrwbz7p3zamb474zk425ijkkh6cixpnc7p3vi6";
+  };
+
+  subPackages = [ "cmd/exporter" ];
+
+  vendorSha256 = "0k6bd052pjfg5c1ba1yhni8msv3wl512vfzy2hrk49jibh8h052n";
+
+  passthru.tests = { inherit (nixosTests.prometheus-exporters) fritzbox; };
+
+  meta = with lib; {
+    description = "Prometheus Exporter for FRITZ!Box (TR64 and UPnP)";
+    homepage = "https://github.com/mxschmitt/fritzbox_exporter";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ bachp flokli ];
+    platforms = platforms.unix;
+  };
+}