defiant: add uptime-kuma, rename metrics->monitoring

hosts/defiant/services/monitoring/default.nix

@@ -6,5 +6,6 @@
     ./grafana.nix
     ./loki.nix
     ./snmp-exporter.nix
+    ./uptime-kuma.nix
   ];
 }

hosts/defiant/services/monitoring/uptime-kuma.nix

@@ -0,0 +1,16 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.uptime-kuma;
+in {
+  services.uptime-kuma = {
+    enable = true;
+    settings = {
+      PORT = "5059";
+      HOST = "127.0.1.2";
+    };
+  };
+
+  services.nginx.virtualHosts."uptime.home.feal.no" = {
+    locations."/".proxyPass = "http://${cfg.settings.HOST}:${cfg.settings.PORT}";
+  };
+}