Add grafana+prometheus + embed into dashboard

9 files changed, 117 insertions, 8 deletions

diff --git a/configuration.nix b/configuration.nix
index 8acda64..af520fb 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -8,6 +8,7 @@
     ./modules/dashboard
     ./modules/storage
     ./modules/notifications
+    ./modules/monitoring
   ];
 
   nixpkgs.config.allowUnfree = true;
diff --git a/modules/dashboard/dashboard-template.nix b/modules/dashboard/dashboard-template.nix
index 5a99e20..43812a0 100644
--- a/modules/dashboard/dashboard-template.nix
+++ b/modules/dashboard/dashboard-template.nix
@@ -52,7 +52,7 @@ let
       grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
       padding: 0 1rem;
       width: 100%;
-      margin: 1rem auto;
+      margin: 1rem auto 2rem;
       max-width: 1200px
     }
     .card {
@@ -93,6 +93,18 @@ let
       margin: 0;
       border: 0;
     }
+    .stats-container {
+      padding: 1rem;
+      border-top: 1px solid #1a1824;
+    }
+    .stats-container iframe {
+      width: 100%;
+      display: block;
+      min-height: 1100px;
+      height: 100%;
+      border: 2px solid #1a1824;
+      border-radius: 5px;
+    }
   '';
 
   headerHTML = ''
@@ -115,6 +127,9 @@ in
     <section class="links-container">
       ${concatStringsSep "" (map linkHTML links)}
     </section>
+    <section class="stats-container">
+      <iframe src="http://grafana.local/public-dashboards/4d3d386f6eb9475bb202fe793c0a72c3"></iframe>
+    </section>
     <script>${script}</script>
   </body>
 </html>
diff --git a/modules/dashboard/default.nix b/modules/dashboard/default.nix
index 9e434c2..42583dd 100644
--- a/modules/dashboard/default.nix
+++ b/modules/dashboard/default.nix
@@ -47,6 +47,20 @@ in
         altUrl = "http://${settings.network.host}:${toString ports.syncthing}";
         color = "#0891d1";
       }
+      {
+        title = "Ntfy-sh";
+        key = "n";
+        url = "http://ntfy.local";
+        altUrl = "http://${settings.network.host}:${toString ports.ntfy}";
+        color = "#2dc9b5";
+      }
+      {
+        title = "Grafana";
+        key = "g";
+        url = "http://grafana.local";
+        altUrl = "http://${settings.network.host}:${toString ports.grafana}";
+        color = "#f05a28";
+      }
     ];
   };
 }
diff --git a/modules/monitoring/default.nix b/modules/monitoring/default.nix
new file mode 100644
index 0000000..d93681b
--- /dev/null
+++ b/modules/monitoring/default.nix
@@ -0,0 +1,7 @@
+{ ... }:
+{
+  imports = [
+    ./grafana.nix
+    ./prometheus.nix
+  ];
+}
diff --git a/modules/monitoring/grafana.nix b/modules/monitoring/grafana.nix
new file mode 100644
index 0000000..8e98ffc
--- /dev/null
+++ b/modules/monitoring/grafana.nix
@@ -0,0 +1,29 @@
+{ lib, ... }:
+let
+  settings = import ../../settings.nix { inherit lib; };
+  ports = settings.network.ports;
+in
+{
+  services.grafana = {
+    enable = true;
+    settings = {
+      server = {
+        protocol = "http";
+        http_addr = "0.0.0.0";
+        http_port = ports.grafana;
+        domain = "grafana.local";
+        serve_from_sub_path = true;
+      };
+      security = {
+        secret_key = settings.grafana.secretKey;
+        allow_sign_up = false;
+        disable_initial_admin_creation = false;
+        disable_gravatar = true;
+        admin_user = settings.grafana.adminUser;
+        admin_email = settings.grafana.adminEmail;
+        admin_password = settings.grafana.adminPassword;
+        allow_embedding = true;
+      };
+    };
+  };
+}
diff --git a/modules/monitoring/prometheus.nix b/modules/monitoring/prometheus.nix
new file mode 100644
index 0000000..5f71c58
--- /dev/null
+++ b/modules/monitoring/prometheus.nix
@@ -0,0 +1,34 @@
+{ lib, ... }:
+let
+  settings = import ../../settings.nix { inherit lib; };
+  ports = settings.network.ports;
+in
+{
+  services.prometheus = {
+    enable = true;
+    port = ports.prometheus;
+
+    exporters.node = {
+      enable = true;
+      port = ports.prometheusNodeExporter;
+      enabledCollectors = [ "systemd" ];
+      extraFlags = [
+        "--collector.ethtool"
+        "--collector.softirqs"
+        "--collector.tcpstat"
+        "--collector.wifi"
+      ];
+    };
+
+    scrapeConfigs = [
+      {
+        job_name = "system";
+        scrape_interval = "10s";
+        static_configs = [{
+          targets = [ "127.0.0.1:${toString ports.prometheusNodeExporter}" ];
+        }];
+      }
+    ];
+  };
+}
+
diff --git a/modules/network/default.nix b/modules/network/default.nix
index 55a4c43..f6263f5 100644
--- a/modules/network/default.nix
+++ b/modules/network/default.nix
@@ -22,6 +22,7 @@ in
       "lidarr.local" = { inherit host; port = ports.lidarr; };
       "git.local" = { inherit host; port = 80; basePath = "/gitweb/"; };
       "ntfy.local" = { inherit host; port = ports.ntfy; };
+      "grafana.local" = { inherit host; port = ports.grafana; extraOptions.recommendedProxySettings = true; };
     };
   };
 
diff --git a/modules/network/service-router.service.nix b/modules/network/service-router.service.nix
index 3d0b6e7..14fc1b2 100644
--- a/modules/network/service-router.service.nix
+++ b/modules/network/service-router.service.nix
@@ -21,6 +21,7 @@ in {
         protocol = mkOption { type = types.str; default = "http"; };
         basePath = mkOption { type = types.str; default = ""; };
         nginx = mkOption { type = types.attrs; default = {}; };
+        extraOptions = mkOption { type = types.attrs; default = {}; };
       }; });
       default = {};
     };
@@ -30,13 +31,17 @@ in {
     services.nginx = {
       enable = true;
       recommendedOptimisation = true;
-      virtualHosts = lib.mapAttrs (_: val: {
-        locations."/" = if val.nginx == {} then {
-          proxyPass =
-            "${val.protocol}://${val.host}:${toString val.port}${val.basePath}";
-          proxyWebsockets = true;
-        } else val.nginx;
-      }) cfg.routes;
+      virtualHosts = lib.mapAttrs (_: val:
+        let
+          opts = if hasAttr "extraOptions" val then val.extraOptions else {};
+        in {
+          locations."/" = if val.nginx == {} then {
+            proxyPass =
+              "${val.protocol}://${val.host}:${toString val.port}${val.basePath}";
+            proxyWebsockets = true;
+          } // opts else val.nginx;
+        }
+      ) cfg.routes;
     };
 
     services.nsd = {
diff --git a/settings.nix b/settings.nix
index 041e375..06c10a0 100644
--- a/settings.nix
+++ b/settings.nix
@@ -14,6 +14,9 @@ in lib.recursiveUpdate privateSettings rec {
       transmissionRPC = 9091;
       syncthing = 3141;
       ntfy = 3142;
+      grafana = 3143;
+      prometheus = 9001;
+      prometheusNodeExporter = 9002;
     };
     exposeTransmissionRPC = false;
   };