Add kube dashboard, enabled by default (#1643)

* Add kube dashboard, enabled by default

Also add rbac role for kube user

* Update main.yml

roles/kubernetes-apps/ansible/templates/dashboard.yml.j2

@@ -0,0 +1,110 @@
+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Configuration to deploy head version of the Dashboard UI compatible with
+# Kubernetes 1.6 (RBAC enabled).
+#
+# Example usage: kubectl create -f <this_file>
+
+{% if rbac_enabled %}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: {{ system_namespace }}
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: kubernetes-dashboard
+  labels:
+    k8s-app: kubernetes-dashboard
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cluster-admin
+subjects:
+- kind: ServiceAccount
+  name: kubernetes-dashboard
+  namespace: {{ system_namespace }}
+{% endif %}
+---
+kind: Deployment
+apiVersion: extensions/v1beta1
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: {{ system_namespace }}
+spec:
+  replicas: 1
+  revisionHistoryLimit: 10
+  selector:
+    matchLabels:
+      k8s-app: kubernetes-dashboard
+  template:
+    metadata:
+      labels:
+        k8s-app: kubernetes-dashboard
+    spec:
+      containers:
+      - name: kubernetes-dashboard
+        image: {{ dashboard_image_repo }}:{{ dashboard_image_tag }}
+        # Image is tagged and updated with :head, so always pull it.
+        imagePullPolicy: Always
+        resources:
+          limits:
+            cpu: {{ dashboard_cpu_limit }}
+            memory: {{ dashboard_memory_limit }}
+          requests:
+            cpu: {{ dashboard_cpu_requests }}
+            memory: {{ dashboard_memory_requests }}
+        ports:
+        - containerPort: 9090
+          protocol: TCP
+        args:
+          # Uncomment the following line to manually specify Kubernetes API server Host
+          # If not specified, Dashboard will attempt to auto discover the API server and connect
+          # to it. Uncomment only if the default does not work.
+          # - --apiserver-host=http://my-address:port
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 9090
+          initialDelaySeconds: 30
+          timeoutSeconds: 30
+{% if rbac_enabled %}
+      serviceAccountName: kubernetes-dashboard
+{% endif %}
+      # Comment the following tolerations if Dashboard must not be deployed on master
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+---
+kind: Service
+apiVersion: v1
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: {{ system_namespace }}
+spec:
+  ports:
+  - port: 80
+    targetPort: 9090
+  selector:
+    k8s-app: kubernetes-dashboard
+