基于Linux集群的socket迁移技术  

Migratable Socket Technology in Linux Cluster

作　　者：晏宁[1] 薛继东[1] 徐学洲[1] 

机构地区：[1]西安电子科技大学软件工程研究所,陕西西安710071

出　　处：《微机发展》2004年第6期95-98,101,共5页Microcomputer Development

摘　　要：以MOSIX,Condor等为代表的负载均衡集群实现了进程迁移技术。但是目前这项技术中由于没有实现对套接字这一重要的资源的迁移支持,大大限制了它的应用范围,特别是对于网络应用程序的迁移。MOSIX是通过其固有的deputy/remote机制实现间接的支持,而Condor根本就不支持网络程序的迁移。文中讨论了Linux集群中的socket迁移问题,然后分析了一种基于CRAK集群系统的套接字迁移系统MIGSOCK的实现机制及未解决的问题,MIGSOCK通过增加一个LinuxModule和少量修改TCP层的方式,在Linux负载均衡集群中实现了内核级可迁移socket,为解决这一问题提供了一种实际的可参考的解决方案。Load balance cluster,like MOSIX,Condor,implemented process migration,but this technology doesn't support the migration of socket which limits its application to network programs.MOSIX indirectly solve this problem by its deputy/remote mechanism,while Condor doesn't support migration of network application.This paper discussed the problem of migratable socket in Linux cluster,and place emphasis on the migratable mechanism in MIGSOCK,a migratable socket system based on CRAK,and its unsolved problems.MIGSOCK implemented kernel level socket migration on CRAK by adding a Linux Module,and provides a practical solution that can be refered.

关 键 词：套接字迁移 进程迁移 MIGSOCK 负载均衡集群 

分 类 号：TN915.04[电子电信—通信与信息系统]