本文選題：虛擬化 + 虛擬機(jī)遷移��； 參考：《解放軍信息工程大學(xué)》2013年碩士論文

【摘要】：隨著云計算的飛速發(fā)展，虛擬機(jī)動態(tài)遷移技術(shù)作為云計算重要的支撐技術(shù)成為近年來研究的熱點，它能保持虛擬機(jī)運行的同時將虛擬的運行環(huán)境從原來的物理服務(wù)器遷移到另一個物理服務(wù)器，實現(xiàn)服務(wù)器之間的負(fù)載均衡、保證服務(wù)質(zhì)量等諸多優(yōu)秀的特性。 目前云平臺大都采用集中式的遷移框架，中央管理模塊負(fù)責(zé)虛擬機(jī)的遷移決策，容易引起單點失效。另外虛擬機(jī)遷移可能跨越復(fù)雜的網(wǎng)絡(luò)環(huán)境，容易遭受中間人攻擊，，造成虛擬機(jī)信息的泄露或篡改，因此如何保護(hù)遷移過程中虛擬機(jī)的安全性是一個急需解決的問題，針對上述問題，本文提出了虛擬機(jī)的自主式遷移框架和虛擬機(jī)安全遷移模型VMSMM，其主要工作如下： 1．借鑒蟻群算法的思想，提出了一種面向負(fù)載均衡的自主式虛擬機(jī)動態(tài)遷移框架，該框架不需要中央管理模塊，能夠?qū)崿F(xiàn)服務(wù)器的自主遷移，避免了單點失效。利用智能螞蟻的搜索，實現(xiàn)了自主式框架的遷移機(jī)制，而且使用模糊邏輯推理根據(jù)系統(tǒng)的負(fù)載狀況自動地調(diào)整智能螞蟻的搜索半徑，提高搜索性能。針對自主式框架，制定了虛擬機(jī)的動態(tài)遷移策略：將服務(wù)器按照負(fù)載劃為四個不同的負(fù)載狀態(tài)域，并根據(jù)其所在的狀態(tài)域進(jìn)行遷移決策；根據(jù)監(jiān)測數(shù)據(jù)對服務(wù)器未來的負(fù)載進(jìn)行預(yù)測；選擇待遷移虛擬機(jī)時綜合考慮資源需求與遷移成本因素。 2．設(shè)計了虛擬機(jī)安全遷移模型VMSMM。深入研究了虛擬機(jī)遷移過程中可能遇到的安全威脅，并針對這些安全威脅，提出了虛擬機(jī)遷移的安全需求。結(jié)合虛擬機(jī)的安全需求，構(gòu)建了虛擬機(jī)的安全遷移模型VMSMM：設(shè)計了一套全新的vTPM密鑰體系，保證虛擬機(jī)遷移的安全性；給出了VMSMM模型中的遷移協(xié)議設(shè)計，并對協(xié)議進(jìn)行了形式化分析；對模型中的具體操作進(jìn)行了詳細(xì)設(shè)計。 3．?dāng)U展了云計算平臺CloudSim實現(xiàn)了本文提出的虛擬機(jī)自主式遷移框架。在擴(kuò)展后的CloudSim平臺上進(jìn)行仿真實驗，驗證該框架的可行性。確定了合適的框架參數(shù)，并且通過仿真實驗與比較分析，驗證了本文提出的自主式虛擬機(jī)遷移框架具有良好的負(fù)載均衡效果； 4．在開源平臺Xen的基礎(chǔ)上增加和修改相關(guān)的安全模塊，實現(xiàn)本文提出的虛擬安全遷移模型VMSMM。在擴(kuò)展后Xen平臺上進(jìn)行仿真分析，驗證了該模型的可行性。并且通過仿真實驗與比較分析，證明了該模型能以可容忍的遷移性能代價換取遷移的安全性。
[Abstract]:With the rapid development of cloud computing, virtual machine dynamic migration technology, as an important supporting technology of cloud computing, has become a hot topic in recent years.It can keep the virtual machine running while migrating the virtual running environment from the original physical server to another physical server to realize the load balance between the servers and ensure the quality of service and many other excellent characteristics.At present, most cloud platforms adopt centralized migration framework, and the central management module is responsible for the migration decision of virtual machines, which can easily lead to single point failure.In addition, virtual machine migration may span the complex network environment and be vulnerable to man-in-the-middle attack, resulting in the disclosure or tampering of virtual machine information. Therefore, how to protect the security of virtual machine in the migration process is an urgent problem to be solved.In order to solve the above problems, this paper proposes an autonomous migration framework for virtual machines and a VMSMMM model for secure migration of virtual machines. The main work of this paper is as follows:1.Based on the idea of ant colony algorithm, an autonomous virtual machine dynamic migration framework for load balancing is proposed. This framework does not need central management module, can realize the autonomous migration of server, and avoids single point failure.The migration mechanism of autonomous framework is realized by using intelligent ant search, and fuzzy logic reasoning is used to automatically adjust the searching radius of intelligent ant according to the load condition of the system, so as to improve the search performance.Aiming at the autonomous framework, the dynamic migration strategy of virtual machine is established: the server is divided into four different load state domains according to the load, and the migration decision is made according to the state domain in which the server is located;According to the monitoring data, the future load of the server is forecasted, and the resource requirements and migration cost factors are taken into account when selecting the virtual machine to be migrated.2.The security migration model of virtual machine (VMSMMM) is designed.In this paper, the possible security threats during virtual machine migration are studied, and the security requirements of virtual machine migration are put forward in view of these security threats.Combined with the security requirement of virtual machine, the security migration model of virtual machine VMS MMM is constructed. A new vTPM key system is designed to ensure the security of virtual machine migration, and the design of migration protocol in VMSMM model is given.The protocol is formalized and the operation in the model is designed in detail.3.We extend the cloud computing platform CloudSim to implement the virtual machine autonomic migration framework proposed in this paper.Simulation experiments are carried out on the extended CloudSim platform to verify the feasibility of the framework.The appropriate frame parameters are determined, and the simulation experiments and comparative analysis show that the proposed autonomous virtual machine migration framework has a good load balancing effect.4.On the basis of open source platform Xen, we add and modify the related security modules, and implement the virtual security migration model VMSM proposed in this paper.The feasibility of the model is verified by simulation analysis on the extended Xen platform.The simulation experiments and comparative analysis show that the model can exchange the safety of migration at the cost of tolerable migration performance.
【學(xué)位授予單位】：解放軍信息工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP302

【共引文獻(xiàn)】

相關(guān)會議論文 前1條

1 Sun Dongdong;Liu Qing;Wu Yini;;Load Balancing-oriented Autonomous Live Migration Framework for Virtual Machine[A];虛擬運營與云計算——第十八屆全國青年通信學(xué)術(shù)年會論文集（下冊）[C];2013年

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