Merge pull request #287 from alok87/run_in_master_ca_Aws

Run CA in master node - aws

cluster-autoscaler/cloudprovider/aws/README.md

@@ -154,6 +154,64 @@ spec:
           hostPath:
             path: "/etc/ssl/certs/ca-certificates.crt"
 ```
+### Master Node Setup
+
+To run a CA pod in master node - CA deployment should tolerate the master `taint` and `nodeSelector` should be used to schedule the pods in master node.
+
+```
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: cluster-autoscaler
+  namespace: kube-system
+  labels:
+    app: cluster-autoscaler
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cluster-autoscaler
+  template:
+    metadata:
+      labels:
+        app: cluster-autoscaler
+    spec:
+      tolerations:
+      - effect: NoSchedule
+        key: node-role.kubernetes.io/master
+      nodeSelector:
+        kubernetes.io/role: master
+      containers:
+        - image: gcr.io/google_containers/cluster-autoscaler:{{ ca_version }}
+          name: cluster-autoscaler
+          resources:
+            limits:
+              cpu: 100m
+              memory: 300Mi
+            requests:
+              cpu: 100m
+              memory: 300Mi
+          command:
+            - ./cluster-autoscaler
+            - --v=4
+            - --stderrthreshold=info
+            - --cloud-provider=aws
+            - --skip-nodes-with-local-storage=false
+            - --nodes={{ node_asg_min }}:{{ node_asg_max }}:{{ name }}
+          env:
+            - name: AWS_REGION
+              value: {{ region }}
+          volumeMounts:
+            - name: ssl-certs
+              mountPath: /etc/ssl/certs/ca-certificates.crt
+              readOnly: true
+          imagePullPolicy: "Always"
+      volumes:
+        - name: ssl-certs
+          hostPath:
+            path: "/etc/ssl/certs/ca-certificates.crt"
+```
 
 ### Auto-Discovery Setup