CoreDNS kubernetes deployment yaml

coredns.yaml

apiVersion: v1
kind: Service
metadata:
  name: coredns
spec:
  ports:
  - name: coredns
    port: 53
    protocol: UDP
    targetPort: 53
  selector:
    app: coredns
  type: LoadBalancer
  loadBalancerIP: 192.168.1.252

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns
data:
  Corefile: |
    . {
        errors
        log
        debug
        health
        prometheus 0.0.0.0:9153
        forward . tls://9.9.9.9 {
            except raspberrypi higgs libreelec gluon brik flo master node0 node1 node2
            tls_servername dns.quad9.net
            health_check 5s
        }
        cache 30
    }
    raspberrypi higgs libreelec gluon brik flo master node0 node1 node2 {
        forward . 192.168.1.1:53 {
            health_check 0
        }
        cache 30
        prometheus
        log
        errors
    }
    whoami.cluster.local {
        log
        errors
        debug
        whoami
        prometheus
    }

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: coredns-deployment
  labels:
    app: coredns
spec:
  replicas: 4
  selector:
    matchLabels:
      app: coredns
  template:
    metadata:
      labels:
        app: coredns
    spec:
      containers:
      - name: coredns
        image: miek/coredns:0.8
        imagePullPolicy: IfNotPresent
        args: [ "-conf", "/etc/coredns/Corefile" ]
        volumeMounts:
        - name: config-volume
          mountPath: /etc/coredns
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        - containerPort: 9153
          name: metrics
          protocol: TCP
      volumes:
      - name: config-volume
        configMap:
          name: coredns
          items:
          - key: Corefile
            path: Corefile