I have a Network(Service) load balancer on GCP and a kubernetes cluster with a pod that serves traffic on 80,443. How can I create a successful health check so the load balancer marks the nodes healthy? I tried creating health check for port 80, 443 and also opened port 10250 for kubelet and tried health checking http 10250 as suggested in Is the Google Container Engine Kubernetes Service LoadBalancer sending traffic to unresponsive hosts?