update kube-dns add-on from v19 to v20

deployments/kubedns.yaml

@@ -15,23 +15,23 @@
 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: kube-dns-v19
+  name: kube-dns-v20
   namespace: kube-system
   labels:
     k8s-app: kube-dns
-    version: v19
+    version: v20
     kubernetes.io/cluster-service: "true"
 spec:
   replicas: 2
   selector:
     matchLabels:
       k8s-app: kube-dns
-      version: v19
+      version: v20
   template:
     metadata:
       labels:
         k8s-app: kube-dns
-        version: v19
+        version: v20
         kubernetes.io/cluster-service: "true"
       annotations:
         scheduler.alpha.kubernetes.io/critical-pod: ''
@@ -39,21 +39,20 @@ spec:
     spec:
       containers:
       - name: kubedns
-        image: gcr.io/google_containers/kubedns-amd64:1.7
+        image: gcr.io/google_containers/kubedns-amd64:1.8
         resources:
           # TODO: Set memory limits when we've profiled the container for large
           # clusters, then set request = limit to keep this container in
           # guaranteed class. Currently, this container falls into the
           # "burstable" category so the kubelet doesn't backoff from restarting it.
           limits:
-            cpu: 100m
             memory: 170Mi
           requests:
             cpu: 100m
             memory: 70Mi
         livenessProbe:
           httpGet:
-            path: /healthz
+            path: /healthz-kubedns
             port: 8080
             scheme: HTTP
           initialDelaySeconds: 60
@@ -67,7 +66,7 @@ spec:
             scheme: HTTP
           # we poll on pod startup for the Kubernetes master service and
           # only setup the /readiness HTTP server once that's available.
-          initialDelaySeconds: 30
+          initialDelaySeconds: 3
           timeoutSeconds: 5
         args:
         # command = "/kube-dns"
@@ -81,11 +80,21 @@ spec:
           name: dns-tcp-local
           protocol: TCP
       - name: dnsmasq
-        image: gcr.io/google_containers/kube-dnsmasq-amd64:1.3
+        image: gcr.io/google_containers/kube-dnsmasq-amd64:1.4
+        livenessProbe:
+          httpGet:
+            path: /healthz-dnsmasq
+            port: 8080
+            scheme: HTTP
+          initialDelaySeconds: 60
+          timeoutSeconds: 5
+          successThreshold: 1
+          failureThreshold: 5
         args:
         - --cache-size=1000
         - --no-resolv
         - --server=127.0.0.1#10053
+        - --log-facility=-
         ports:
         - containerPort: 53
           name: dns
@@ -94,19 +103,20 @@ spec:
           name: dns-tcp
           protocol: TCP
       - name: healthz
-        image: gcr.io/google_containers/exechealthz-amd64:1.1
+        image: gcr.io/google_containers/exechealthz-amd64:1.2
         resources:
-          # keep request = limit to keep this container in guaranteed class
           limits:
-            cpu: 10m
             memory: 50Mi
           requests:
             cpu: 10m
             memory: 50Mi
         args:
-        - -cmd=nslookup kubernetes.default.svc.cluster.local 127.0.0.1 >/dev/null && nslookup kubernetes.default.svc.cluster.local 127.0.0.1:10053 >/dev/null
-        - -port=8080
-        - -quiet
+        - --cmd=nslookup kubernetes.default.svc.cluster.local 127.0.0.1 >/dev/null
+        - --url=/healthz-dnsmasq
+        - --cmd=nslookup kubernetes.default.svc.cluster.local 127.0.0.1:10053 >/dev/null
+        - --url=/healthz-kubedns
+        - --port=8080
+        - --quiet
         ports:
         - containerPort: 8080
           protocol: TCP