apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app: postgres
  name: postgres
spec:
  selector:
    matchLabels:
      app: postgres
  serviceName: postgres
  replicas: 1
  template:
    metadata:
      labels:
        app: postgres
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: postgres
        image: postgres:14
        env:
        - name: PGDATA
          value: /var/lib/postgresql/data/pgdata
        - name: POSTGRES_DB
          valueFrom:
            secretKeyRef:
              name: credentials
              key: POSTGRES_DB
        - name: POSTGRES_USER
          valueFrom:
            secretKeyRef:
              name: credentials
              key: POSTGRES_USER
        - name: POSTGRES_PASSWORD
          valueFrom:
            secretKeyRef:
              name: credentials
              key: POSTGRES_PASSWORD
        ports:
        - containerPort: 5432
          name: postgres
        volumeMounts:
        - name: postgres-data
          mountPath: /var/lib/postgresql/data/pgdata
  volumeClaimTemplates:
  - metadata:
      name: postgres-data
    spec:
      accessModes:
      - ReadWriteOnce
      storageClassName: local-path
      resources:
        requests:
          storage: 1Gi