kube-postgres.yml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-volume
  labels:
    type: local
    app: postgres
spec:
  storageClassName: manual
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteMany
  hostPath:
    path: /data/postgresql

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-volume-claim
  labels:
    app: postgres
spec:
  storageClassName: manual
  volumeName: "postgres-volume"
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 10Gi

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
        - name: postgres
          image: postgres:12
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_SERVER
              value: localhost
            - name: POSTGRES_PORT
              value: '5432'
            - name: POSTGRES_PASSWORD
              value: 'changethis'
            - name: POSTGRES_USER
              value: 'postgres'
            - name: POSTGRES_DB
              value: 'app'
          volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: postgresdata
      volumes:
        - name: postgresdata
          persistentVolumeClaim:
            claimName: postgres-volume-claim

---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  type: NodePort
  ports:
    - port: 5432
  selector:
    app: postgres