apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: postgres
  template:
    metadata:
      labels:
        app.kubernetes.io/name: postgres
    spec:
      containers:
      - name: postgres
        image: postgres:15
        env:
        - name: POSTGRES_DB
          value: "${POSTGRES_DB}"
        - name: POSTGRES_USER
          value: "${POSTGRES_USER}"
        - name: POSTGRES_PASSWORD
          value: "${POSTGRES_PASSWORD}"
        - name: PGDATA
          value: "/var/lib/postgresql/data/pgdata"
        ports:
        - containerPort: 5432
        resources:
          requests:
            memory: "512Mi"
            cpu: "250m"
          limits:
            memory: "1Gi"
            cpu: "500m"
        volumeMounts:
        - name: postgres-storage
          mountPath: /var/lib/postgresql/data
      volumes:
      - name: postgres-storage
        persistentVolumeClaim:
          claimName: postgres-pvc
---
apiVersion: v1
kind: Service
metadata:
  name: postgres-server
spec:
  selector:
    app.kubernetes.io/name: postgres
  ports:
  - protocol: TCP
    port: 5432
    targetPort: 5432
  type: ClusterIP