apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: postgres

spec:
  selector:
    matchLabels:
      app: postgres
  replicas: 1
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
        - name: postgres
          image: postgres:latest
          envFrom:
            - configMapRef:
                name: postgres-configmap
            - secretRef:
                name: postgres-secret
          volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: postgres-data
  volumeClaimTemplates:
    - metadata:
        name: postgres-data
      spec:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: 2Gi
        storageClassName: longhorn