面向云计算的虚拟机动态迁移研究

发布时间：2018-01-29 12:36

本文关键词： 云计算虚拟化动态迁移负载平衡服务质量　出处：《山东师范大学》2012年硕士论文　论文类型：学位论文

【摘要】：云计算的起源要先从互联网讲起，互联网的高速发展孕育了云计算的出现，云计算是继大型计算机后到客户端-服务器之后的又一个巨变，云计算经历了并行计算、分布式计算、网格计算、网络存储、虚拟化等技术发展融合的产物，云计算逐渐成为了未来计算技术发展的一个重要方向。云计算的架构分为基础设施层、平台层、应用层和管理层。虚拟化技术能将云计算中心的所有硬件资源池化，实现海量资源的统一管理，可扩展性良好。基础设施层位于云架构的最底层，它是云计算中心的基础和核心，不管提供什么样服务的云都必须有该层，平台层和应用层都需要依赖它，因此本文后面将着重研究基础设施层、它所提供的服务IaaS和它所用到的关键技术服务器虚拟化。在云计算中，服务器虚拟化涉及的管理功能有资源预留、资源监控、资源动态分配、负载平衡等。负载平衡是云计算中心的一个重要问题，因为云计算中心的服务器数量众多，，用户服务对资源的需求又处于动态变化中，所以为了保证用户服务质量，负载平衡很重要。目前的负载平衡都是在管理员发现服务器资源接近满负荷运行，或者发现违反用户服务质量(也就是服务器资源已经出现不足)的情况下，手动发起VM动态迁移。而且需要人为寻找能提供足够资源的目标服务器接收待迁移虚拟机，这样的人为操作显然不够灵活，具有滞后性。根据前面所描述的云计算中心VM动态迁移面临的问题，本文提出了一个用于解决上述问题的迁移架构，并阐述了它的设计原则和具体的设计过程，实现了迁移架构。为了验证提出并设计好的迁移架构，本文基于流行的开源xen虚拟机软件做实验来分析动态迁移的过程。实验表明本文提出的迁移架构成功完成了当初的设计原则和要求，保证了迁移过程中用户的服务质量。
[Abstract]:The origin of cloud computing is to start from the Internet , the high - speed development of the Internet has spawned cloud computing , and the cloud computing is another great change after the large - scale computer to the client - server . The cloud computing experiences the integration of technologies such as parallel computing , distributed computing , grid computing , network storage , virtualization and the like , and the cloud computing gradually becomes an important direction for the future computing technology development . The architecture of cloud computing is divided into infrastructure layer , platform layer , application layer and management layer . The virtualization technology can pool all hardware resources of cloud computing center to realize unified management of mass resources and good scalability . The infrastructure layer is located at the bottom of the cloud architecture , which is the foundation and core of the cloud computing center . Both the platform layer and the application layer need to rely on it , regardless of what kind of cloud it provides , so this article focuses on the infrastructure layer , the services it provides , and the key technology server virtualization it uses . In cloud computing , server virtualization involves resource reservation , resource monitoring , resource dynamic allocation , load balancing , etc . Load balancing is an important problem of cloud computing center because the number of servers in the cloud computing center and the dynamic change of the demand of the user service to the resources are important . The current load balancing is to manually initiate VM dynamic migration in the event that the administrator finds that the server resource is close to full load , or if a target server that provides enough resources is found to receive the virtual machine to be migrated . According to the problems faced by the dynamic migration of the cloud computing center VM described above , a migration architecture for solving the above problems is presented , and the design principle and the specific design process are described , and the migration architecture is realized . In order to verify the proposed and designed migration architecture , this paper analyzes the process of dynamic migration based on popular open source xen virtual machine software . The experiment shows that the proposed migration architecture successfully completed the original design principles and requirements , and guaranteed the service quality of users during the migration process .

【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP302

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