Kubernetes Pi-Hole

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: pi-hole
  labels:
    app: pi-hole
spec:
  replicas: 1
  selector:
    matchLabels:
      app: pi-hole
  template:
    metadata:
      labels:
        app: pi-hole
    spec:
      affinity:
        nodeAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 1
            preference:
              matchExpressions:
              - key: kubernetes.io/hostname
                operator: In
                values:
                - node1
      containers:
      - name: pi-hole
        image: pihole/pihole:latest
        imagePullPolicy: Always
        ports:
        - name: pi-hole-admin
          containerPort: 80
          protocol: TCP
        - name: dns-tcp
          containerPort: 53
          protocol: TCP
        - name: dns-udp
          containerPort: 53
          protocol: UDP
        readinessProbe:
          httpGet:
            path: /admin
            port: pi-hole-admin
          initialDelaySeconds: 30
          timeoutSeconds: 30
          failureThreshold: 6
        livenessProbe:
          httpGet:
            path: /admin
            port: pi-hole-admin
          initialDelaySeconds: 30
          timeoutSeconds: 30
          failureThreshold: 6
        resources:
          requests:
            cpu: 100m
            memory: "512Mi"
        env:
        - name: TZ
          value: "America/Denver"
        - name: WEBPASSWORD
          valueFrom:
            secretKeyRef:
              name: pi-hole
              key: WEBPASSWORD
        - name: DNS1
          value: "192.168.1.1"
        - name: DNS2
          value: "192.168.1.1"
        - name: CONDITIONAL_FORWARDING
          value: "true"
        - name: CONDITIONAL_FORWARDING_IP
          value: "192.168.1.1"
        - name: CONDITIONAL_FORWARDING_DOMAIN
          value: "home.example.com"
        - name: CONDITIONAL_FORWARDING_REVERSE
          value: "1.168.192.in-addr.arpa"
        volumeMounts:
        - name: pi-hole-etc
          mountPath: "/etc/pihole"
        - name: pi-hole-dnsmasq
          mountPath: "/etc/dnsmasq.d"
      volumes:
      - name: pi-hole-etc
        persistentVolumeClaim:
          claimName: pi-hole-etc
      - name: pi-hole-dnsmasq
        persistentVolumeClaim:
          claimName: pi-hole-dnsmasq
      - name: secret
        secret:
          secretName: pi-hole
          defaultMode: 0400

pdb.yaml

apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
  labels:
    app: pi-hole
  name: pi-hole
  namespace: default
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: pi-hole

pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
    name: pi-hole-etc
    labels:
        volume: pi-hole-etc
spec:
    accessModes:
    - ReadWriteOnce
    persistentVolumeReclaimPolicy: Retain
    storageClassName: ""
    mountOptions:
    - hard
    - nfsvers=3
    - noexec
    - nosuid
    - rsize=131072
    - wsize=131072
    capacity:
        storage: 1Gi
    nfs:
        server: 192.168.1.22
        path: /srv/nfs/pi-hole/etc
---
apiVersion: v1
kind: PersistentVolume
metadata:
    name: pi-hole-dnsmasq
    labels:
        volume: pi-hole-dnsmasq
spec:
    accessModes:
    - ReadWriteOnce
    persistentVolumeReclaimPolicy: Retain
    storageClassName: ""
    mountOptions:
    - hard
    - nfsvers=3
    - noexec
    - nosuid
    - rsize=131072
    - wsize=131072
    capacity:
        storage: 1Gi
    nfs:
        server: 192.168.1.22
        path: /srv/nfs/pi-hole/dnsmasq.d

pvc.yaml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pi-hole-etc
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  selector:
    matchLabels:
      volume: pi-hole-etc
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pi-hole-dnsmasq
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  selector:
    matchLabels:
      volume: pi-hole-dnsmasq

secret.yaml

apiVersion: v1
kind: Secret
metadata:
    name: pi-hole
type: Opaque
stringData:
    WEBPASSWORD: MyPasswordIsSecret

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: pi-hole
spec:
  type: NodePort
  selector:
    app: pi-hole
  ports:
  - port: 8000
    targetPort: 80
    name: pi-hole-admin
  - port: 53
    targetPort: 53
    protocol: TCP
    name: dns-tcp
  - port: 53
    targetPort: 53
    protocol: UDP
    name: dns-udp
  externalIPs:
  - 192.168.1.51
  - 192.168.1.52