hosts/monitoring-3: split host config to multiple files

hosts/monitoring-3/grafana.nix

@@ -0,0 +1,39 @@
+{ ... }:
+{
+  services.grafana = {
+    enable  = true;
+    domain  = "grafana.monitoring.clerie.de";
+    rootUrl = "https://grafana.monitoring.clerie.de";
+    port    = 3001;
+    addr = "::1";
+    auth.anonymous.enable = true;
+
+    provision = {
+      enable = true;
+      datasources.settings.datasources = [
+        {
+          type = "prometheus";
+          name = "Prometheus";
+          url = "http://[::1]:9090";
+          isDefault = true;
+        }
+      ];
+      dashboards.settings.providers = [
+        {
+          options.path = ./dashboards;
+        }
+      ];
+    };
+  };
+
+  services.nginx = {
+    virtualHosts = {
+      "grafana.monitoring.clerie.de" = {
+        enableACME = true;
+        forceSSL   = true;
+        locations."/".proxyPass = "http://[::1]:3001/";
+      };
+    };
+  };
+
+}