postgres-statefulset.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: openflights-postgres
  labels:
    app: postgres
spec:
  serviceName: postgres-service
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
      - name: postgres
        image: postgres
        ports:
        - containerPort: 5432
        env:
        - name: POSTGRES_DB
          valueFrom:
            configMapKeyRef:
              name: postgres-configmap
              key: database_name
        - name: POSTGRES_USER
          valueFrom:
            secretKeyRef:
              name: postgres-secret
              key: user
        - name: POSTGRES_HOST
          valueFrom:
            configMapKeyRef:
              name: postgres-configmap
              key: hostname
        - name: POSTGRES_PASSWORD
          valueFrom:
            secretKeyRef:
              name: postgres-secret
              key: password
        volumeMounts:
        - name: pvc
          mountPath: /var/lib/postgresql/data
  volumeClaimTemplates:
  - metadata:
      name: pvc
    spec:
      accessModes:
        - ReadWriteOnce
      resources:
        requests:
          storage: 500Mi