loki/module.nix: init

modules/services/grafana/module.nix

@@ -44,7 +44,28 @@ in {
           check_for_updates = false;
         };
 
-        # users.allow_signup = false;
+        users.allow_signup = false;
+      };
+      provision = {
+        enable = true;
+        datasources.settings = {
+          datasources = [
+            (mkIf config.modules.system.services.database.postgresql.enable {
+              name = "Prometheus";
+              type = "prometheus";
+              access = "proxy";
+              url = "http://127.0.0.1:4024";
+              isDefault = true;
+            })
+
+            (mkIf config.modules.system.services.prometheus.enable {
+              name = "PostgreSQL";
+              type = "postgres";
+              access = "proxy";
+              url = "http://127.0.0.1:${toString config.services.prometheus.port}";
+            })
+          ];
+        };
       };
     };
     services.nginx = {

modules/services/monitoring/loki/module.nix

@@ -0,0 +1,26 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib.modules) mkIf;
+  inherit (lib.options) mkEnableOption;
+
+  cfg = config.modules.system.services.loki;
+  port = 4026;
+  dataDir = "/srv/data/loki";
+in {
+  options.modules.system.services.loki.enable = mkEnableOption "Grafana, a graphing service";
+
+  config = mkIf cfg.enable {
+    services.loki = {
+      enable = true;
+      package = pkgs.loki;
+
+      configuration = {
+        
+      };
+    };
+  };
+}

modules/services/prometheus/module.nix

@@ -13,10 +13,6 @@ in {
   options.modules.system.services.prometheus.enable = mkEnableOption "Grafana, a graphing service";
 
   config = mkIf cfg.enable {
-    networking.firewall.allowedTCPPorts = [config.services.grafana.settings.server.http_port];
-
-    modules.system.services.database.postgresql.enable = true;
-
     services.prometheus = {
       enable = true;
       package = pkgs.prometheus;
@@ -34,6 +30,10 @@ in {
           port = 4024;
           user = "postgres";
         };
+        nginx = {
+          enable = true;
+          port = 4025;
+        };
       };
       scrapeConfigs = [
         {
@@ -51,6 +51,11 @@ in {
           scrape_interval = "30s";
           static_configs = [{targets = ["localhost:${toString config.services.prometheus.exporters.postgres.port}"];}];
         }
+        {
+          job_name = "nginx";
+          scrape_interval = "30s";
+          static_configs = [{targets = ["localhost:${toString config.services.prometheus.exporters.nginx.port}"];}];
+        }
       ];
     };
   };