db.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
        - name: postgres
          image: postgres:9
          ports:
            - containerPort: 5432
          envFrom:
            - configMapRef:
                name: db-config
          volumeMounts:
            - mountPath: /var/lib/postgresql/data
              name: db-data
      volumes:
        - name: db-data
          emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  labels:
    app: postgres
spec:
  type: ClusterIP
  selector:
    app: postgres
  ports:
    - name: db
      port: 5432
      targetPort: 5432
      protocol: TCP