====== 6. Service ======
NodePort:
<code yaml service-nodeport-definition.yaml>
apiVersion: v1
kind: Service
metadata:
  name: webapp-service
spec:
  type: NodePort
  ports:
    - targetPort: 8080
      port: 8080
      nodePort: 30080
  selector:
    name: simple-webapp
</code>

<code bash>kubectl create service nodeport webapp-service --tcp=8080:8080 --node-port=30080</code>