kind: ConfigMap
metadata:
  name: coredns
  namespace: kube-system
apiVersion: v1
data:
  Corefile: |
    .:53 {
        errors
        health {
           lameduck 5s
        }
        ready
        kubernetes cluster.local in-addr.arpa ip6.arpa {
           pods insecure
           fallthrough in-addr.arpa ip6.arpa
           ttl 30
        }
        file /etc/coredns/lan.db lan
        prometheus :9153
        forward . /etc/resolv.conf {
           max_concurrent 1000
        }
        cache 30
        loop
        reload
        loadbalance
    }
  lan.db: "; lan. zone file\n$ORIGIN lan.\n@    3600  IN  SOA   sns.dns.icann.org.
    noc.dns.icann.org. 2021102006 7200 3600 1209600 3600\n        3600 IN  NS    172.23.255.252\n\nns
    \           IN  A    172.23.255.252\nsalt          IN  A     192.168.10.2 \nmqtt
    \         IN  A     172.16.23.1\nwww-proxy     IN  A     172.23.255.1\ngit           IN
    \ A     172.23.255.2\npostgresql    IN  A     172.23.255.4\nmariadb       IN  A
    \    172.23.255.5\npihole        IN  A     172.23.255.253\nadm           IN CNAME
    adm01.wks.\n\nprometheus      IN    CNAME www-proxy \nalertmanager    IN    CNAME
    www-proxy\nstats           IN    CNAME www-proxy\ncr-ui           IN    CNAME
    www-proxy\napt             IN    CNAME www-proxy\napt-cache       IN    CNAME
    www-proxy\nnodered         IN    CNAME www-proxy\nfoto            IN    CNAME
    www-proxy\nmusik           IN    CNAME www-proxy\nhassio          IN    CNAME
    www-proxy\nhassio-conf     IN    CNAME www-proxy  \ngit-ui          IN    CNAME
    www-proxy\ngrav            IN    CNAME www-proxy\ntekton          IN    CNAME
    www-proxy\nnc              IN    CNAME www-proxy\nauth            IN    CNAME
    www-proxy\npublic.auth     IN    CNAME www-proxy \nsecure.auth     IN    CNAME
    www-proxy\ndocker-registry IN    CNAME adm\ncr              IN    CNAME adm\ndr-mirror
    \      IN    CNAME adm\nlog             IN    CNAME adm\n"
---
apiVersion: v1
kind: Service
metadata:
  name: dns-ext
  namespace: kube-system
spec:
  ports:
  - name: dns-udp
    protocol: UDP
    port: 53
    targetPort: 53
  selector:
    k8s-app: kube-dns
  type: LoadBalancer
  loadBalancerIP: 172.23.255.252
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: kube-dns
spec:
  progressDeadlineSeconds: 600
  replicas: 2
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: kube-dns
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      labels:
        k8s-app: kube-dns
    spec:
      containers:
      - args:
        - -conf
        - /etc/coredns/Corefile
        image: k8s.gcr.io/coredns/coredns:v1.8.4
        imagePullPolicy: IfNotPresent
        livenessProbe:
          failureThreshold: 5
          httpGet:
            path: /health
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 60
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5
        name: coredns
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        - containerPort: 9153
          name: metrics
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
            path: /ready
            port: 8181
            scheme: HTTP
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 1
        resources:
          limits:
            memory: 170Mi
          requests:
            cpu: 100m
            memory: 70Mi
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            add:
            - NET_BIND_SERVICE
            drop:
            - all
          readOnlyRootFilesystem: true
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /etc/coredns
          name: config-volume
          readOnly: true
      dnsPolicy: Default
      nodeSelector:
        kubernetes.io/os: linux
      priorityClassName: system-cluster-critical
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: coredns
      serviceAccountName: coredns
      terminationGracePeriodSeconds: 30
      tolerations:
      - key: CriticalAddonsOnly
        operator: Exists
      - effect: NoSchedule
        key: node-role.kubernetes.io/master
      - effect: NoSchedule
        key: node-role.kubernetes.io/control-plane
      volumes:
      - configMap:
          defaultMode: 420
          items:
          - key: Corefile
            path: Corefile
          - key: lan.db
            path: lan.db
          name: coredns
        name: config-volume