kubespray/roles/kubernetes-apps/ansible/templates/nodelocaldns-deamonset.yml.j2

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: nodelocaldns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    matchLabels:
      k8s-app: nodelocaldns
  template:
    metadata:
       labels:
          k8s-app: nodelocaldns
    spec:
{% if kube_version is version('v1.11.1', '>=') %}
      priorityClassName: system-cluster-critical
{% endif %}
      serviceAccountName: nodelocaldns
      hostNetwork: true
      dnsPolicy: Default  # Don't use cluster DNS.
      tolerations:
      - key: node-role.kubernetes.io/master
        effect: NoSchedule
      - key: "CriticalAddonsOnly"
        operator: "Exists"
      containers:
      - name: node-cache
        image: "{{ nodelocaldns_image_repo }}:{{ nodelocaldns_image_tag }}"
        resources:
          limits:
            memory: {{ nodelocaldns_memory_limit }}
          requests:
            cpu: {{ nodelocaldns_cpu_requests }}
            memory: {{ nodelocaldnsdns_memory_requests }}
        args: [ "-localip", "{{ nodelocaldns_ip }}", "-conf", "/etc/coredns/Corefile" ]
        securityContext:
          privileged: true
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        - containerPort: 9253
          name: metrics
          protocol: TCP
        livenessProbe:
          httpGet:
            host: {{ nodelocaldns_ip }}
            path: /health
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 3
        volumeMounts:
        - name: config-volume
          mountPath: /etc/coredns
      volumes:
        - name: config-volume
          configMap:
            name: nodelocaldns
            items:
            - key: Corefile
              path: Corefile
      terminationGracePeriodSeconds: 30