Kubernetes is Google's open source container orchestration engine, which supports automatic deployment, large-scale scalability and application containerization management. When deploying an application in a production environment, it is usually necessary to deploy multiple instances of the application to balance the load of application requests. In Kubernetes, we can create multiple containers, each container runs an application instance, and then realize the management, discovery and access of this group of application instances through the built-in load balancing strategy, and these details do not need complicated manual configuration and processing by the operation and maintenance personnel.