configure grafana further. set up prometheus node export.

services/monitoring/prometheus.mod.nix

@@ -1,11 +1,41 @@
 {
+  universal.modules = [
+    {
+      services.prometheus.exporters = {
+        node = {
+          enable = true;
+          enabledCollectors = ["systemd"];
+          port = 6703;
+        };
+        varnish.enable = true;
+      };
+    }
+  ];
   glucose.modules = [
     {
+      lib,
+      molecules,
+      ...
+    }: let
+      ip = i: "10.24.1.${toString i}";
+      ips = builtins.mapAttrs (lib.const ip) molecules;
+      ips' = builtins.mapAttrs (name: ip: "${ip}:6703") ips;
+    in {
       services.prometheus = {
         enable = true;
         port = 6750;
-
         enableReload = true;
+
+        scrapeConfigs = [
+          {
+            job_name = "devices";
+            static_configs = [
+              {
+                targets = ips';
+              }
+            ];
+          }
+        ];
       };
     }
   ];