# --------------------------------------------------
# PersistentVolume (hostPath on mist)
# --------------------------------------------------
apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-${ENV}-pv
spec:
  capacity:
    storage: 20Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: local-storage
  hostPath:
    path: /home/kimjunte/k8s_storage/postgres/${PG_VOLUME}
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
            - key: kubernetes.io/hostname
              operator: In
              values:
                - mist

---
# --------------------------------------------------
# PersistentVolumeClaim
# --------------------------------------------------
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-${ENV}-pvc
  namespace: ${NAMESPACE}
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
  storageClassName: local-storage

---
# --------------------------------------------------
# PostgreSQL Deployment
# --------------------------------------------------
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres-${ENV}
  namespace: ${NAMESPACE}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
      env: ${ENV}
  template:
    metadata:
      labels:
        app: postgres
        env: ${ENV}
    spec:
      containers:
        - name: postgres
          image: postgres:16
          ports:
            - containerPort: 5432
          envFrom:
            - secretRef:
                name: postgres-${ENV}
          volumeMounts:
            - name: postgres-data
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: postgres-data
          persistentVolumeClaim:
            claimName: postgres-${ENV}-pvc

---
# --------------------------------------------------
# PostgreSQL Service (internal)
# --------------------------------------------------
apiVersion: v1
kind: Service
metadata:
  name: postgres-${ENV}
  namespace: ${NAMESPACE}
spec:
  type: ClusterIP
  selector:
    app: postgres
    env: ${ENV}
  ports:
    - port: 5432
      targetPort: 5432