Merge pull request #4581 from itskingori/add_metrics_server_addon

Add metrics-server addon

addons/metrics-server/README.md

@@ -0,0 +1,20 @@
+# Kubernetes Metrics Server
+
+Compatibility matrix:
+
+Metrics Server | Metrics API group/version | Supported Kubernetes version
+---------------|---------------------------|-----------------------------
+0.2.x          | `metrics.k8s.io/v1beta1`  | 1.8+
+0.1.x          | `metrics/v1alpha1`        | 1.7
+
+
+In order to deploy metrics-server in your cluster run the following command from
+the top-level directory of this repository:
+
+```console
+# Kubernetes 1.7
+$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/metrics-server/v1.7.x.yaml
+
+# Kubernetes 1.8+
+$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/metrics-server/v1.8.x.yaml
+```

addons/metrics-server/v1.7.x.yaml

@@ -0,0 +1,95 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: metrics-server:system:auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: RoleBinding
+metadata:
+  name: metrics-server-auth-reader
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: apiregistration.k8s.io/v1beta1
+kind: APIService
+metadata:
+  name: v1alpha1.metrics
+spec:
+  service:
+    name: metrics-server
+    namespace: kube-system
+  group: metrics
+  version: v1alpha1
+  insecureSkipTLSVerify: true
+  groupPriorityMinimum: 100
+  versionPriority: 100
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    kubernetes.io/name: "Metrics-server"
+spec:
+  selector:
+    k8s-app: metrics-server
+  ports:
+    - port: 443
+      protocol: TCP
+      targetPort: 443
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    k8s-app: metrics-server
+spec:
+  selector:
+    matchLabels:
+      k8s-app: metrics-server
+  template:
+    metadata:
+      name: metrics-server
+      labels:
+        k8s-app: metrics-server
+    spec:
+      serviceAccountName: metrics-server
+      containers:
+        - name: metrics-server
+          image: gcr.io/google_containers/metrics-server-amd64:v0.1.0
+          imagePullPolicy: Always
+          command:
+            - /metrics-server
+            - --source=kubernetes.summary_api:''
+          resources:
+            requests:
+              cpu: 20m
+              memory: 200Mi
+            limits:
+              cpu: 100m
+              memory: 500Mi

addons/metrics-server/v1.8.x.yaml

@@ -0,0 +1,132 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: metrics-server:system:auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: metrics-server-auth-reader
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: system:metrics-server
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - pods
+      - nodes
+      - namespaces
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - "extensions"
+    resources:
+      - deployments
+    verbs:
+      - get
+      - list
+      - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: system:metrics-server
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:metrics-server
+subjects:
+  - kind: ServiceAccount
+    name: metrics-server
+    namespace: kube-system
+---
+apiVersion: apiregistration.k8s.io/v1beta1
+kind: APIService
+metadata:
+  name: v1beta1.metrics.k8s.io
+spec:
+  service:
+    name: metrics-server
+    namespace: kube-system
+  group: metrics.k8s.io
+  version: v1beta1
+  insecureSkipTLSVerify: true
+  groupPriorityMinimum: 100
+  versionPriority: 100
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    kubernetes.io/name: "Metrics-server"
+spec:
+  selector:
+    k8s-app: metrics-server
+  ports:
+    - port: 443
+      protocol: TCP
+      targetPort: 443
+---
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: metrics-server
+  namespace: kube-system
+  labels:
+    k8s-app: metrics-server
+spec:
+  selector:
+    matchLabels:
+      k8s-app: metrics-server
+  template:
+    metadata:
+      name: metrics-server
+      labels:
+        k8s-app: metrics-server
+    spec:
+      serviceAccountName: metrics-server
+      containers:
+        - name: metrics-server
+          image: gcr.io/google_containers/metrics-server-amd64:v0.2.1
+          imagePullPolicy: Always
+          command:
+            - /metrics-server
+            - --source=kubernetes.summary_api:''
+          resources:
+            requests:
+              cpu: 20m
+              memory: 200Mi
+            limits:
+              cpu: 100m
+              memory: 500Mi

docs/horizontal_pod_autoscaling.md

@@ -121,7 +121,7 @@ These are the PRs that enable the required configuration:
 [k8s-aggregation-layer]: https://v1-9.docs.kubernetes.io/docs/tasks/access-kubernetes-api/configure-aggregation-layer/
 [k8s-extend-api]: https://v1-9.docs.kubernetes.io/docs/concepts/api-extension/apiserver-aggregation/
 [k8s-hpa]: https://v1-9.docs.kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/
-[k8s-metrics-server]: https://github.com/kubernetes-incubator/metrics-server#deployment
+[k8s-metrics-server]: https://github.com/kubernetes/kops/blob/master/addons/metrics-server/README.md
 [k8s-prometheus-custom-metrics-adapter]: https://github.com/DirectXMan12/k8s-prometheus-adapter
 
 [pr-1]: https://github.com/kubernetes/kops/pull/3679