Only add services that can be accessed from outside the cluster

handle.go

if msg.Type == ADDED || msg.Type == MODIFIED {
	var service discovery.Service

	// ClusterIP services are only accessible inside the cluster. They
	// should be located with env vars provided by k8s. We will only announce
	// externally available services here.
	if msg.Object.Spec.Type == LOADBALANCER {
		endpoints := make([]string, 0, len(msg.Object.Spec.Ports)*len(msg.Object.Status.LoadBalancer.Ingress))
		for _, ingress := range msg.Object.Status.LoadBalancer.Ingress {
			for _, port := range msg.Object.Spec.Ports {
				endpoints = append(endpoints, fmt.Sprintf("%s:%d", ingress.Hostname, port.Port))
			}
		}

		service = discovery.Service{
			Name:        msg.Object.Meta.Name,
			Description: "Autodetected service",
			Endpoints:   endpoints,
		}
	}

	glog.Info("Announcing service ", service)
	manager.AnnounceService(&service)
}