Added nginx module

modules/nginx.jsonnet

@@ -0,0 +1,46 @@
+local utils = import '../utils.libsonnet';
+local k = import 'ksonnet/ksonnet.beta.4/k.libsonnet';
+
+{
+  _config+:: {
+    namespace: 'monitoring',
+    // Add custom dashboards
+    grafanaDashboards+:: {
+      'nginx-dashboard.json': (import '../grafana-dashboards/nginx-dashboard.json'),
+    },
+  },
+
+  nginxExporter+:: {
+    serviceMonitor:
+      utils.newServiceMonitor('nginx', $._config.namespace, { 'app.kubernetes.io/name': 'ingress-nginx' }, 'ingress-nginx', 'prometheus', 'http'),
+
+    service:
+      local service = k.core.v1.service;
+      local servicePort = k.core.v1.service.mixin.spec.portsType;
+      local nginxPort = servicePort.newNamed('prometheus', 10254, 10254);
+
+      service.new('nginx-ingress-metrics', {'app.kubernetes.io/name': 'ingress-nginx'}, nginxPort) +
+      service.mixin.metadata.withNamespace('nginx-ingress') +
+      service.mixin.metadata.withLabels({'app.kubernetes.io/name': 'ingress-nginx'}) +
+      service.mixin.spec.withClusterIp('None'),
+
+    clusterRole:
+      utils.newClusterRole('nginx-exporter', [
+        {
+          apis: [''],
+          res: ['services', 'endpoints', 'pods'],
+          verbs: ['get', 'list', 'watch'],
+        },
+      ], null),
+
+
+    serviceAccount:
+      utils.newServiceAccount('nginx-exporter', $._config.namespace, null),
+
+
+    // Creates a ClusterRoleBinding between a `clusterRole` and a `serviceAccount` on `serviceAccountNamespace`
+    clusterRoleBinding:
+      utils.newClusterRoleBinding('nginx-exporter', 'nginx-exporter', $._config.namespace, 'nginx-exporter', null),
+
+  },
+}

vars.jsonnet

@@ -25,6 +25,11 @@
       enabled: false,
       file: import 'modules/metallb.jsonnet',
     },
+    {
+      name: 'nginxExporter',
+      enabled: true,
+      file: import 'modules/nginx.jsonnet',
+    },
     {
       name: 'traefikExporter',
       enabled: false,