services: monitoring: package grafana dashboards

pkgs/default.nix

@@ -2,4 +2,5 @@
 {
   sddm-sugar-candy = pkgs.callPackage ./sddm-sugar-candy {};
   kaleidoscope-udev-rules = pkgs.callPackage ./kaleidoscope-udev-rules {};
+  grafana-dashboards = pkgs.callPackage ./grafana-dashboards {};
 }

pkgs/grafana-dashboards/default.nix

@@ -0,0 +1,5 @@
+{ callPackage }:
+{
+  nginx = callPackage ./nginx.nix {};
+  node-exporter = callPackage ./node-exporter.nix {};
+}

pkgs/grafana-dashboards/nginx.nix

@@ -0,0 +1,28 @@
+{ stdenv, fetchFromGitHub, lib, ... }:
+let
+  version = "0.9.0";
+in
+stdenv.mkDerivation {
+  inherit version;
+  pname = "grafana-dashboard-nginx";
+
+  dontBuild = true;
+
+  src = fetchFromGitHub {
+    owner = "nginxinc";
+    repo = "nginx-prometheus-exporter";
+    rev = "v${version}";
+    sha256 = "sha256:04y5vpj2kv2ygdzxy3crpnx4mhpkm1ns2995kxgvjlhnyck7a5rf";
+  };
+
+  installPhase = ''
+    mkdir -p $out
+    cp grafana/dashboard.json $out/dashboard.json
+  '';
+
+  meta = with lib; {
+    description = "grafana dashboard for NGINX exporter";
+    homepage = "https://github.com/nginxinc/nginx-prometheus-exporter";
+    license = licenses.asl20;
+  };
+}

pkgs/grafana-dashboards/node-exporter.nix

@@ -0,0 +1,28 @@
+{ stdenv, fetchFromGitHub, lib, ... }:
+let
+  version = "7d61c79619e5749e629758ecd96748c010028120";
+in
+stdenv.mkDerivation {
+  version = "master-${version}";
+  pname = "grafana-dashboard-node-exporter";
+
+  dontBuild = true;
+
+  src = fetchFromGitHub {
+    owner = "rfrail3";
+    repo = "grafana-dashboards";
+    rev = version;
+    sha256 = "sha256:1z6i76jdiw3jjigbmbqvyi8kyj4ngw0y73fv9yksr2ncjfqlhhv6";
+  };
+
+  installPhase = ''
+    mkdir -p $out
+    cp prometheus/node-exporter-full.json $out/node-exporter-full.json
+  '';
+
+  meta = with lib; {
+    description = "grafana dashboard for node exporter";
+    homepage = "https://github.com/rfrail3/grafana-dashboards";
+    license = licenses.lgpl3Only;
+  };
+}