Falling back metric-server v0.2.x until we fix HPA w/ v0.3.x (#5)

HPA seems to be working with v0.2.x w/ two changes

- Allow access to `nodes/stats` in `resource-reader.yaml`
- Replace arg `--source=kubernetes.summary_api:https://kubernetes.default.svc?kubeletHttps=true&kubeletPort=10250&useServiceAccount=true&insecure=true`
  in `metrics-server-deployment.yaml`

Signed-off-by: Saikrishna Edupuganti <saikrishna.edupuganti@intel.com>

clr-k8s-examples/1-core-metrics/aggregated-metrics-reader.yaml

@@ -1,12 +0,0 @@
-kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1
-metadata:
-  name: system:aggregated-metrics-reader
-  labels:
-    rbac.authorization.k8s.io/aggregate-to-view: "true"
-    rbac.authorization.k8s.io/aggregate-to-edit: "true"
-    rbac.authorization.k8s.io/aggregate-to-admin: "true"
-rules:
-- apiGroups: ["metrics.k8s.io"]
-  resources: ["pods"]
-  verbs: ["get", "list", "watch"]

clr-k8s-examples/1-core-metrics/auth-delegator.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:

clr-k8s-examples/1-core-metrics/auth-reader.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: RoleBinding
 metadata:

clr-k8s-examples/1-core-metrics/metrics-apiservice.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: apiregistration.k8s.io/v1beta1
 kind: APIService
 metadata:

clr-k8s-examples/1-core-metrics/metrics-server-deployment.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -23,19 +22,10 @@ spec:
         k8s-app: metrics-server
     spec:
       serviceAccountName: metrics-server
-      volumes:
-      # mount in tmp so we can safely use from-scratch images and/or read-only containers
-      - name: tmp-dir
-        emptyDir: {}
       containers:
       - name: metrics-server
-        image: k8s.gcr.io/metrics-server-amd64:v0.3.1
+        image: gcr.io/google_containers/metrics-server-amd64:v0.2.0
         imagePullPolicy: Always
-        args:
-        - --kubelet-insecure-tls
-        - --kubelet-preferred-address-types=InternalIP
-        - --logtostderr
-        volumeMounts:
-        - name: tmp-dir
-          mountPath: /tmp
-
+        command:
+        - /metrics-server
+        - --source=kubernetes.summary_api:https://kubernetes.default.svc?kubeletHttps=true&kubeletPort=10250&useServiceAccount=true&insecure=true

clr-k8s-examples/1-core-metrics/metrics-server-service.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: v1
 kind: Service
 metadata:

clr-k8s-examples/1-core-metrics/resource-reader.yaml

@@ -1,4 +1,3 @@
----
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:

clr-k8s-examples/1-core-metrics/versions

@@ -1 +1 @@
-https://github.com/kubernetes-incubator/metrics-server/tree/v0.3.1/deploy/1.8%2B
+f90c6705d2381ea2db1a6343da6c400bd2ef4cb2