%0 Journal Article
%T 一种基于DHT的数据中心网络租户隔离技术<br>A data center network tenant isolation technology based on DHT
%A 孙延涛a
%A 位月b
%A 耿岚岚b
%A 贾泽群b
%A 石贺b
%J 北京交通大学学报
%D 2018
%R 10.11860/j.issn.1673-0291.2018.05.008
%X 摘要 多租户技术是云计算中一种软件架构技术，旨在解决多用户环境下软、硬件资源共享的问题，并且确保各用户间数据的隔离性.目前，多租户技术在如何突破子网限制，实现虚拟机 IP 地址与所在子网位置分离、支持虚拟机迁移等方面存在诸多问题.针对上述问题，提出了一种新的面向数据中心网络的多租户隔离技术.该技术利用一致性哈希算法和分布式环形哈希表技术，将虚拟机信息保存在位置解析器上，并利用位置解析器的位置解析功能实现租户间的相互隔离、租户内虚拟机的相互通信及虚拟机的迁移.该技术与具体路由实现方式无关、对虚拟机完全透明、无需部署额外的服务器，其成本低，鲁棒性好.本文利用OPNET仿真软件对多租户隔离技术方案进行可行性验证及性能分析.仿真实验表明：该技术能够实现租户之间的通信且能够保证良好的网络性能.<br>Abstract：Multi-tenancy technology is a kind of software architecture technology in cloud computing. It aims to solve the problem of sharing the same hardware and software resources in multi-user environment and ensure data isolation among users. At present, there are many problems in multi-tenancy technologies such as how to break subnet restrictions to separate IP addresses of virtual machines from their subnets, and how to implement migration of virtual machines. To address above problems, this paper proposes a new multi-tenancy isolation technology for data center networks. The technology uses a consistent Hash algorithm and a Distributed circular Hash Table(DHT) technology to store the information of virtual machines in location resolvers. The technology supports isolation of tenants，the communication between the virtual machines within a same tenant and the migration of virtual machines.This technology does not depend on specific routing methods, not require extra servers and is transparent to virtual machines, so it takes low cost and has good robustness. At the end,we analyze the feasibility and performance of the multi-tenant solution by OPNET simulation software.Simulation experiments show that the technology can achieve communication between tenants and ensure good network performance.
%K 云计算
%K 分布式哈希表
%K 多租户隔离
%K 数据中心网络&lt
%K br&gt
%K cloud computing
%K distributed circular Hash table
%K multi-tenant isolation
%K data center network
%U http://jdxb.bjtu.edu.cn/CN/abstract/abstract3380.shtml