appserver-spec.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: appserver
spec:
  replicas: 1
  selector:
    matchLabels:
      app: appserver
  template:
    metadata:
      labels:
        app: appserver
    spec:
      containers:
      - name: appserver
        image: appserver
        imagePullPolicy: Never
        env:
        - name: DB_HOST
          value: dbservice

---
apiVersion: v1
kind: Service
metadata:
  name: contacts
spec:
  type: LoadBalancer
  selector:
    app: appserver
  ports:
  - protocol: TCP
    port: 80
    targetPort: 8080