基于状态转移图的虚拟集群节点可用性分析  

Availability Analyzing of Virtual Cluster Nodes Based on State Transition Diagram

作　　者：车建华[1] 任守纲[1] 余勇 徐焕良[1] CHE Jian-hua;REN Shou-gang;YU Yong;XU Huan-liang(College of Information Science and Technology,Nanjing Agricultural University, Nanjing 210095, China;Global Energy Interconnection Research Institute, Nanjing 210003, China)

机构地区：[1]南京农业大学信息科技学院,南京210095 [2]全球能源互联网研究院,南京210003

出　　处：《计算机科学》2018年第5期317-321,共5页Computer Science

基　　金：国家科技支撑计划项目(2015BAK36B05);江苏省重点研发计划项目(BE2016803);国家自然科学基金项目(71303120);南京农业大学青年科创基金项目(KJ2013033)资助

摘　　要：针对虚拟集群节点的可用性评价,提出了一种基于状态转移图的虚拟集群节点可用性模型。首先,通过分析虚拟集群节点的部署方式和运行过程,确立了虚拟集群节点的5种生命周期状态,并阐明了5种生命周期状态之间的转移关系;然后,对于无备用节点和有备用节点两种情况下的虚拟集群节点,分别给出了相应的状态转移图,并建立了一系列的可用性模型。根据实际虚拟集群系统的运行日志,设定所提出的虚拟集群节点可用性模型的参数值,然后进行了多次数值模拟实验。实验结果表明,所提出的虚拟集群节点可用性模型的分析结果与实际可用性水平一致,能够正确地反映虚拟集群节点的可用性规律。Aiming at the availability evaluation of virtual cluster nodes,a state transition diagram-based virtual cluster node availability model was proposed.First,five lifecycle states of virtual cluster nodes are established by analyzing the deployment mode and running process of virtual cluster nodes,and the transition relations between five lifecycle states are expounded.Then,the state transition diagrams of a virtual cluster node without a standby node and with a standby node are respectively presented,and the corresponding availability models of virtual cluster nodes are proposed based on the above state transition diagrams.Many numerical simulation experiments were conducted after setting the parameter values of the proposed availability models according to the running log of a real virtual cluster system.The experimental results show that the analytical results of the proposed availability models are in accordance with the real availability level and they are able to reflect the availability law of virtual cluster nodes properly.

关 键 词：虚拟机 虚拟集群节点 状态转移图 可用性模型 集群系统 

分 类 号：TP302.7[自动化与计算机技术—计算机系统结构]