桌面云系统高可用性设计与实现

发布时间：2018-10-24 14:31

【摘要】：从云计算提出至今,已经经历十几个年头。云计算也从最初的概念到如今跟各行各业具体结合。各政府,企业均看到了云计算所带来的IT系统变革。云计算以其统一管控,高效节能,安全,弹性伸缩,低成本的特点现已广泛被政府,企业接受,它们纷纷寻求云化,让自己的IT系统更加轻便,灵活,可控,同时也为企业减少了大量的成本。而这其中,桌面云这一云服务模式更是深得企业的喜爱。在桌面云大规模使用的同时,桌面云本身因其依托网络也存在着自己的问题,多起云服务宕机事件屡屡发生,影响了桌面云的进一步推广。本文在这样的大背景下,力求通过对桌面云架构及实现方式的改进来提高桌面云系统整体的可用性。在分析了大量桌面云产品的基础上,本文主要做了以下工作:1.首先对桌面云整体实现架构做了总结,在此基础上,设计了新的高可用性桌面云系统架构,新的架构主要高可用性体现在于对计算虚拟化和存储虚拟化的改进上面。2.引入多用户多虚拟机机制。即将虚拟机形成虚拟机池,提高了可用性,更提高了资源利用率。3.引入了新的虚拟机,虚拟机池状态判定规则,使得被调度的虚拟机具有高可用性,且新接入的用户不影响原有用户的使用体验。4.针对预先资源分配的不合理性,我们对已经分配的资源根据实际使用情况作了再调度,提高了计算资源池服务水平,更提高了资源利用率。5.设计了新的分布式文件系统架构,抛弃了原有的名称节点主备设计,使得名称节点可以线性扩展。不仅提高了存储系统的高可用性,更提高了存储系统的并发量。
[Abstract]:Since cloud computing was put forward, it has experienced more than ten years. Cloud computing also from the original concept to now with a variety of industry specific integration. All governments and enterprises have seen the IT system change brought by cloud computing. Cloud computing has been widely accepted by the government and enterprises because of its unified management, high efficiency, energy saving, security, flexibility and low cost. They have sought to cloud their own IT system more portable, flexible and controllable. At the same time, for the enterprise to reduce a large number of costs. And among them, desktop cloud this one cloud service pattern is the favorite of the enterprise deeply. With the large-scale use of desktop cloud, desktop cloud itself also has its own problems because of its network. Many cloud service outages occur frequently, which affects the further promotion of desktop cloud. In this context, we try to improve the overall availability of desktop cloud system through the improvement of desktop cloud architecture and implementation. Based on the analysis of a large number of desktop cloud products, this paper mainly does the following work: 1. In this paper, a new high availability desktop cloud architecture is designed based on the summary of the overall implementation architecture of desktop cloud. The main high availability of the new architecture is the improvement of computing virtualization and storage virtualization. 2. The mechanism of multi-user and multi-virtual machine is introduced. The virtual machine is about to form a pool of virtual machines, improving availability and resource utilization. 3. 3. A new virtual machine, virtual machine pool state decision rule is introduced, which makes the scheduled virtual machine have high availability, and the new access user does not affect the original user's experience. 4. In view of the irrationality of resource allocation in advance, we reschedule the allocated resources according to the actual usage, improve the service level of the computing resource pool, and improve the utilization ratio of resources. A new distributed file system architecture is designed, and the original name node master and backup design is abandoned, so that the name node can be extended linearly. It not only improves the high availability of storage system, but also increases the concurrency of storage system.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP302

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