Research on highly available private cloud platform for urban rail transit based on OpenStack

doi:10.16265/j.cnki.issn1003-3033.2022.06.2381

Abstract

Abstract:

In order to improve resource utilization of urban rail transit system and share resources between different systems, a highly available private cloud platform was built based on OpenStack system. Firstly, OpenStack principle was explained, and possible fault types under cloud failure mode were analyzed to demonstrate the importance of establishing such a platform. Secondly, structure of high-availability cluster was designed in reference to the commonly used frameworks, and a suitable scheme was selected for cluster deployment. Then, multiple indicators of high availability on the test platform were given, and its post-fault reconstruction performance was analyzed. Finally, ATS system was established on the cloud to test ATS operation and high-availability of the platform. The results show that the OpenStack-based private cloud platform designed in this paper can ensure high availability and normal operation of ATS system of rail transit.

Key words: rail transit, OpenStack, high-availability, private cloud platform, automatic train supervision(ATS)

TANG Tao, TIAN Jinyuan, ZHU Li, WANG Xi. Research on highly available private cloud platform for urban rail transit based on OpenStack[J]. China Safety Science Journal, 2022, 32(6): 137-143.

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组件	功能
Nova	计算服务组件,管理平台上的各种资源
Neutron	网络服务组件,实现网络功能的虚拟化
Glance	镜像服务组件,管理镜像的实例化以及生命周期
Swift	对象存储服务组件,管理部分文件的存储
Cinder	块存储服务组件,管理存储卷的生命周期
Keystone	身份认证组件,实现对内或对外的身份认证

测试编号	测试场景	测试指标
1	主管理节点宕机,应用、资源调度等核心组件失效	组件功能由主节点切换到从节点的时间
2	业务节点宕机,其上的集群通信组件失效。	单节点应用故障重建时间
3	业务节点上的应用故障中止,管理节点检测并重建新的应用	跨节点应用迁移时间