基于集群的可伸缩网络服务体系结构研究与实现*

在分析现在和将来网络服务需求的基础上, 提出基于集群的可伸缩网络服务体系结构Linux Virtual Server, 分为负载调度器、服务器池和后端存储三层结构。负载调度器采用IP 负载均衡技术和基于内容请求分发技术。LVS 集群提供了负载平衡、可伸缩性和高可用性, 可以应用于建立很多可伸缩网络服务。进而提出地理分布的LVS 集群系统, 可节约网络带宽, 改善网络服务质量, 具有良好的抗灾害性。

Research and Implementation of Architecture of Cluster-based Scalable Network Services

On the analysis of present and future network service requirements, we present the architecture of cluster-based scalable network services called Linux Virtual Server, which has three tiers of load balancer, server pool and backend storage. The load balancer supports IP load balancing and content-based request distribution techniques. The LVScluster provides load balancing, scalability and availability, which can be deployed to build many scalable network services. We give a geographi-cally distributed LVS clusters, which can save bandwidth, improve quality of network services and be disaster-tolerant.