# ============================================
# PostgreSQL 数据库部署 (可选)
# ============================================

---
# StorageClass (如果需要动态供应)
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: hyc-storage
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: WaitForFirstConsumer

---
# PersistentVolume - PostgreSQL 数据
apiVersion: v1
kind: PersistentVolume
metadata:
  name: hyc-postgres-pv
spec:
  capacity:
    storage: 20Gi
  accessModes:
    - ReadWriteOnce
  storageClassName: hyc-storage
  hostPath:
    path: /data/hyc-postgres
    type: DirectoryOrCreate

---
# PersistentVolumeClaim - PostgreSQL
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: hyc-postgres-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
  storageClassName: hyc-storage

---
# Secret - PostgreSQL 凭据
apiVersion: v1
kind: Secret
metadata:
  name: hyc-postgres-secret
type: Opaque
stringData:
  POSTGRES_DB: hyc
  POSTGRES_USER: postgres
  POSTGRES_PASSWORD: your-secure-password

---
# Service - PostgreSQL
apiVersion: v1
kind: Service
metadata:
  name: hyc-postgres
spec:
  selector:
    app: hyc-postgres
  ports:
    - port: 5432
      targetPort: 5432
  clusterIP: None

---
# Deployment - PostgreSQL
apiVersion: apps/v1
kind: Deployment
metadata:
  name: hyc-postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: hyc-postgres
  template:
    metadata:
      labels:
        app: hyc-postgres
    spec:
      containers:
        - name: postgres
          image: postgres:15-alpine
          envFrom:
            - secretRef:
                name: hyc-postgres-secret
          volumeMounts:
            - name: postgres-data
              mountPath: /var/lib/postgresql/data
          resources:
            requests:
              cpu: 250m
              memory: 256Mi
            limits:
              cpu: 1000m
              memory: 1Gi
          livenessProbe:
            exec:
              command:
                - pg_isready
                - -U
                - postgres
            initialDelaySeconds: 30
            periodSeconds: 10
      volumes:
        - name: postgres-data
          persistentVolumeClaim:
            claimName: hyc-postgres-pvc