Abstract: With the development of information technology, the demand for information system in railway industry is rising rapidly, and the cost of system operation & maintenance and equipment is also increasing continuously. The application of cloud platform and virtualization technology has improved this situation, but compared with container technology, there are still disadvantages such as high performance loss, high construction cost, slow application release and so on. Combined with the characteristics of railway information system, this paper studies and expounds the network design of K8S (Kubernetes), which is the best container technology, and puts forward solutions to technical difficulties such as high availability, self-repair, service discovery and interface with external system, proposes a solution to the engineering concerns such as the high availability of service, automatic service recovery, service discovery, network interface between the service in the container and the external network system.

Key words: railway information system, container, K8S, network design

摘要： 信息系统在铁路行业的需求呈快速上升趋势，系统运行中的运维和设备成本也持续增长。云平台和虚拟化技术的应用使这一情况得到了改善，但对比容器技术，依然存在着性能损耗大、建设成本较高、应用发布较慢等劣势。结合铁路信息系统的特点，对K8S（Kubernetes）在工程中具体应用的网络设计做出研究及阐述，提出对服务的高可用、服务自动恢复、服务发现、容器内服务与外网系统网络接口等工程关注点的解决方案。

关键词: 铁路信息系统, 容器, K8S, 网络设计