docker-pdns/examples/kubernetes/slave-daemonset.yaml

---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  labels:
    app.kubernetes.io/name: pdns-slave
    app.kubernetes.io/part-of: pdns
    app.kubernetes.io/component: slave
  name: pdns-slave
spec:
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app.kubernetes.io/name: pdns-slave
      app.kubernetes.io/part-of: pdns
      app.kubernetes.io/component: slave
  template:
    metadata:
      creationTimestamp: null
      labels:
        app.kubernetes.io/name: pdns-slave
        app.kubernetes.io/part-of: pdns
        app.kubernetes.io/component: slave
    spec:
      nodeSelector:
        node-role.kubernetes.io/pdns-slave: "true"
      containers:
      - image: pschiffe/pdns-mysql:alpine
        imagePullPolicy: IfNotPresent
        name: pdns-slave
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: PDNS_gmysql_host
          value: "mariadb-pdns"
        - name: PDNS_gmysql_port
          value: "3306"
        - name: PDNS_gmysql_user
          valueFrom:
            secretKeyRef:
              name: mariadb-pdns-secret
              key: username
        - name: PDNS_gmysql_password
          valueFrom:
            secretKeyRef:
              name: mariadb-pdns-secret
              key: password
        - name: PDNS_gmysql_dbname
          value: "slave_"
        - name: PDNS_version_string
          value: "anonymous"
        - name: PDNS_disable_axfr
          value: "yes"
        - name: PDNS_secondary
          value: "yes"
        - name: PDNS_autosecondary
          value: "yes"
        - name: PDNS_allow_unsigned_supermaster
          value: "no"
        - name: PDNS_allow_notify_from
          value: "10.0.0.1"
        - name: SUPERMASTER_HOSTS
          value: "ns1.example.com"
        - name: SUPERMASTER_IPS
          value: "10.0.0.1"
        ports:
        - name: dns-udp
          containerPort: 53
          protocol: UDP
          hostPort: 53
        - name: dns-tcp
          containerPort: 53
          protocol: TCP
          hostPort: 53
        resources:
          limits:
            cpu: 300m
            memory: 256Mi
          requests:
            cpu: 50m
            memory: 128Mi
        securityContext:
          privileged: false
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirstWithHostNet
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
  updateStrategy:
    rollingUpdate:
      maxUnavailable: 1
    type: RollingUpdate