Use Ingress for Gray Release Deployment in K8S

This lab involves Alibaba Cloud Container Service for Kubernetes. This lab shows how to use the Ingress object of Kubernetes for gray release deployment. You can expose services within a Kubernetes cluster to clients outside the cluster by using the Service or Ingress method. Service is an abstraction, which defines a logical set of pods with identical functions that provides a persistent endpoint. That is, when a service exists, its IP address and port number remain unchanged. Af