apiVersion: apps/v1
kind: StatefulSet
metadata:
  namespace: default
  name: postgres-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres-app
  template:
    metadata:
      labels:
        app: postgres-app
    spec:
      containers:
        - name: system
          image: repository.umisen.com/external/postgres:alpha
          imagePullPolicy: IfNotPresent
          env:
            - name: PGDATA
              value: '/var/lib/postgresql/data/pgdata'
            - name: POSTGRES_PASSWORD
              value: 'Foobar123'
          ports:
            - containerPort: 5432
          resources:
            limits:
              memory: 256Mi
              cpu: 1
          volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: postgres-data
      volumes:
        - name: postgres-data
          persistentVolumeClaim:
             claimName: postgres-pvc

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  namespace: default
  name: postgres-pvc
spec:
  accessModes: ["ReadWriteOnce"]
  storageClassName: "postgres-storage"
  resources:
    requests:
      storage: 1Gi

---
apiVersion: v1
kind: PersistentVolume
metadata:
  namespace: default
  name: postgres-pv
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  hostPath:
    path: /data/postgres-app
    type: ""
  storageClassName: "postgres-storage"
  volumeMode: Filesystem
---
apiVersion: v1
kind: Service
metadata:
  namespace: default
  name: postgres-svc
spec:
  selector:
    app: postgres-app
  type: ClusterIP
  ports:
    - name: postgres-tcp
      protocol: TCP
      port: 5432
      targetPort: 5432