apiVersion: v1
kind: Service
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  ports:
    - port: 5432
  selector:
    app: postgres
    tier: postgres
  clusterIP: None
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-pv
  labels:
    type: local
spec:
  capacity:
    storage: 1Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: manual
  # TODO: change hostPath (short.slc.ar/YkdtaD)
  hostPath:
    path: /tmp/minikube/postgres
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-pv-claim
  labels:
    app: db
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: manual
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: Secret
metadata:
  name: postgres-secrets
type: Opaque
data:
  username: dXNlcm5hbWU=
  password: cGFzc3dvcmQxMjM0
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: db
  labels:
    app: db
spec:
  replicas: 1
  selector:
    matchLabels:
      app: db
      tier: postgres
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: db
        tier: postgres
    spec:
      containers:
      - image: db:prod
        name: postgres
        env:
        - name: POSTGRES_PASSWORD
          valueFrom:
            secretKeyRef:
              name: postgres-secrets
              key: password
        - name: PGDATA
          value: /var/lib/postgresql/data/pgdata
        - name: POSTGRES_DB
          value: db
        - name: POSTGRES_USER
          valueFrom:
            secretKeyRef:
              name: postgres-secrets
              key: username
        ports:
        - containerPort: 5432
          name: postgres
        volumeMounts:
        - name: postgres-pv-storage
          mountPath: /var/lib/postgresql/data
      volumes:
      - name: postgres-pv-storage
        persistentVolumeClaim:
          claimName: postgres-pv-claim