Service

api.yml

apiVersion: apps/v1
kind: ReplicaSet

metadata:
  name: api

spec:
  selector:
    matchLabels:
      name: api

  replicas: 3

  template:
    metadata:
      labels:
        name: api

    spec:
      containers:
        - name: api
          image: user-service
          env:
            - name: DB
              value: db
          livenessProbe: &healthcheck
            httpGet:
              path: /demo/hello
              port: 8080
          readinessProbe:
            <<: *healthcheck

---

apiVersion: v1
kind: Service

metadata:
  name: api

spec:
  type: NodePort

  selector:
    name: api

  ports:
    - port: 8080

db.yml

apiVersion: apps/v1
kind: ReplicaSet

metadata:
  name: db

spec:
  selector:
    matchLabels:
      name: db

  template:
    metadata:
      labels:
        name: db

    spec:
      containers:
        - name: db
          image: mongo:3.3

---

apiVersion: v1
kind: Service

metadata:
  name: db

spec:
  selector:
    name: db

  ports:
    - port: 27017