Added role for Heapster Deploymnet (with InfluxDB and Grafana)

Added a new role which deploys Heapster, InfluxDB and Grafana
when a new Kargo Kubernetes Cluster is created.

roles/kubernetes-apps/heapster/default/main.yml

@@ -0,0 +1,2 @@
+---
+heapster_namespace: kube-system

roles/kubernetes-apps/heapster/tasks/main.yml

@@ -0,0 +1,23 @@
+---
+- name: Heapster | Lay Down Heaspter Templates
+  template: src={{item.file}} dest={{kube_config_dir}}/{{item.file}}
+  with_items:
+    - {file: grafana-deployment.yaml, type: deployment, name: monitoring-grafana}
+    - {file: grafana-service.yaml, type: svc, name: monitoring-grafana}
+    - {file: heapster-deployment.yaml, type: deployment, name: heapster}
+    - {file: heapster-service.yaml, type: svc, name: heapster}
+    - {file: influxdb-deployment.yaml, type: deployment, name: monitoring-influxdb}
+    - {file: influxdb-service.yaml, type: svc, name: monitoring-influxdb}
+  register: manifests
+  when: inventory_hostname == groups['kube-master'][0]
+
+- name: Heapster| Start Resources
+  kube:
+    name: "{{item.item.name}}"
+    namespace: "{{heapster_namespace}}"
+    kubectl: "{{bin_dir}}/kubectl"
+    resource: "{{item.item.type}}"
+    filename: "{{kube_config_dir}}/{{item.item.file}}"
+    state: "{{item.changed | ternary('latest','present') }}"
+  with_items: "{{ manifests.results }}"
+  when: inventory_hostname == groups['kube-master'][0]

roles/kubernetes-apps/heapster/templates/grafana-deployment.yaml

@@ -0,0 +1,44 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: monitoring-grafana
+  namespace: kube-system
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        task: monitoring
+        k8s-app: grafana
+    spec:
+      containers:
+      - name: grafana
+        image: gcr.io/google_containers/heapster-grafana-amd64:v4.0.2
+        ports:
+          - containerPort: 3000
+            protocol: TCP
+        volumeMounts:
+        - mountPath: /var
+          name: grafana-storage
+        env:
+        - name: INFLUXDB_HOST
+          value: monitoring-influxdb
+        - name: GRAFANA_PORT
+          value: "3000"
+          # The following env variables are required to make Grafana accessible via
+          # the kubernetes api-server proxy. On production clusters, we recommend
+          # removing these env variables, setup auth for grafana, and expose the grafana
+          # service using a LoadBalancer or a public IP.
+        - name: GF_AUTH_BASIC_ENABLED
+          value: "false"
+        - name: GF_AUTH_ANONYMOUS_ENABLED
+          value: "true"
+        - name: GF_AUTH_ANONYMOUS_ORG_ROLE
+          value: Admin
+        - name: GF_SERVER_ROOT_URL
+          # If you're only using the API Server proxy, set this value instead:
+          # value: /api/v1/proxy/namespaces/kube-system/services/monitoring-grafana/
+          value: /
+      volumes:
+      - name: grafana-storage
+        emptyDir: {}

roles/kubernetes-apps/heapster/templates/grafana-service.yaml

@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    # For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
+    # If you are NOT using this as an addon, you should comment out this line.
+    kubernetes.io/cluster-service: 'true'
+    kubernetes.io/name: monitoring-grafana
+  name: monitoring-grafana
+  namespace: kube-system
+spec:
+  # In a production setup, we recommend accessing Grafana through an external Loadbalancer
+  # or through a public IP.
+  # type: LoadBalancer
+  # You could also use NodePort to expose the service at a randomly-generated port
+  # type: NodePort
+  ports:
+  - port: 80
+    targetPort: 3000
+  selector:
+    k8s-app: grafana

roles/kubernetes-apps/heapster/templates/heapster-deployment.yaml

@@ -0,0 +1,21 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: heapster
+  namespace: kube-system
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        task: monitoring
+        k8s-app: heapster
+    spec:
+      containers:
+      - name: heapster
+        image: gcr.io/google_containers/heapster-amd64:v1.3.0-beta.1
+        imagePullPolicy: IfNotPresent
+        command:
+        - /heapster
+        - --source=kubernetes:https://kubernetes.default
+        - --sink=influxdb:http://monitoring-influxdb:8086

roles/kubernetes-apps/heapster/templates/heapster-service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    task: monitoring
+    # For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
+    # If you are NOT using this as an addon, you should comment out this line.
+    kubernetes.io/cluster-service: 'true'
+    kubernetes.io/name: Heapster
+  name: heapster
+  namespace: kube-system
+spec:
+  ports:
+  - port: 80
+    targetPort: 8082
+  selector:
+    k8s-app: heapster

roles/kubernetes-apps/heapster/templates/influxdb-deployment.yaml

@@ -0,0 +1,22 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: monitoring-influxdb
+  namespace: kube-system
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        task: monitoring
+        k8s-app: influxdb
+    spec:
+      containers:
+      - name: influxdb
+        image: gcr.io/google_containers/heapster-influxdb-amd64:v1.1.1
+        volumeMounts:
+        - mountPath: /data
+          name: influxdb-storage
+      volumes:
+      - name: influxdb-storage
+        emptyDir: {}

roles/kubernetes-apps/heapster/templates/influxdb-service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    task: monitoring
+    # For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
+    # If you are NOT using this as an addon, you should comment out this line.
+    kubernetes.io/cluster-service: 'true'
+    kubernetes.io/name: monitoring-influxdb
+  name: monitoring-influxdb
+  namespace: kube-system
+spec:
+  ports:
+  - port: 8086
+    targetPort: 8086
+  selector:
+    k8s-app: influxdb

roles/kubernetes-apps/meta/main.yml

@@ -15,3 +15,5 @@ dependencies:
   - role: kubernetes-apps/helm
     when: helm_enabled
     tags: [ apps, helm ]
+  - role: kubernetes-apps/heapster
+    tags: [ apps, heapster ]