---
apiVersion: v1
kind: Secret
metadata:
  name: demo-postgresql
  namespace: demo
type: Opaque
stringData:
  POSTGRES_PASSWORD: demo-secret-pw
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: demo-postgresql-data
  namespace: demo
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-postgresql
  namespace: demo
  labels:
    app: demo-postgresql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-postgresql
  template:
    metadata:
      labels:
        app: demo-postgresql
    spec:
      containers:
        - name: postgresql
          image: postgres:17-alpine
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_DB
              value: demo
            - name: POSTGRES_USER
              value: demo
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: demo-postgresql
                  key: POSTGRES_PASSWORD
          resources:
            requests:
              memory: "64Mi"
              cpu: "50m"
            limits:
              memory: "128Mi"
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
              subPath: pgdata
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: demo-postgresql-data
---
apiVersion: v1
kind: Service
metadata:
  name: demo-postgresql
  namespace: demo
  labels:
    app: demo-postgresql
spec:
  type: ClusterIP
  ports:
    - port: 5432
      targetPort: 5432
      protocol: TCP
  selector:
    app: demo-postgresql