高可用SDN控制器主从分布式系统设计  

Design of master-slave distributed system for high availability SDN controller

作　　者：高荣亮 郑乐 GAO Rongliang;ZHENG Le(The 34th Research Institute of CETC,Guilin Guangxi 541004,China)

机构地区：[1]中国电子科技集团公司第三十四研究所,广西桂林541004

出　　处：《光通信技术》2021年第7期59-62,共4页Optical Communication Technology

摘　　要：软件定义网络(SDN)控制器系统是整个网络的大脑,为了降低控制器单点故障造成的影响,设计了一种简单可靠且可用性更强的主从分布式系统和基于优先级及非抢占的主从选举算法,选举过程不再受限于健康节点数量;简化了Raft算法日志复制系统,设计了一套简单高效的主从增量/全量数据复制流程;结合数据持久化存储及恢复功能,实现系统重启后数据不丢失。试验结果表明:该系统实现了目前主流的主从分布式系统的主要功能,性能更优,能适应分布式SDN控制器系统各种复杂应用场景。Software defined network(SDN)controller system is the brain of the whole network.In order to reduce the influence of single point fault of controller,this paper designs a simple,reliable and more available master-slave distributed system and master-slave election algorithm based on priority and non preemption.The election process is no longer limited by the number of healthy nodes.The log replication system of Raft algorithm is simplified,and a simple and efficient master-slave incremental/full data replication process is designed.Combined with the data persistence storage and recovery function,the data can not be lost after the system restart.The experiment results show that the system has realized the main functions of the main and subordinate distributed system,and the performance is better,and it can adapt to various complex application scenarios of the distributed SDN controller system.

关 键 词：软件定义网络控制器 分布式系统 可用性 主从 Raft算法 

分 类 号：TN929.11[电子电信—通信与信息系统]