feat: adds grafana/prometheus for monitoring

modules/services/monitoring.nix

@@ -0,0 +1,40 @@
+{ config, ... }: {
+  services = {
+    grafana = {
+      enable = true;
+      settings.server = {
+        domain = "monitoring.liv.town";
+        http_addr = "127.0.0.1";
+        http_port = 2342;
+      };
+    };
+
+    nginx.virtualHosts.${config.services.grafana.domain} = {
+      useACMEHost = "liv.town";
+      forceSSL = true;
+      locations."/" = {
+        proxyPass = "http://127.0.0.1:${toString config.services.grafana.port}";
+        proxyWebsockets = true;
+      };
+    };
+
+    prometheus = {
+      enable = true;
+      port = 9001;
+      exporters = {
+        node = {
+          enable = true;
+          enabledCollectors = [ "systemd" ];
+          port = 9002;
+        };
+      };
+      scrapeConfigs = [{
+        job_name = "violet";
+        static_configs = [{
+          targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ];
+        }];
+      }];
+    };
+  };
+}
+