云计算中SLA管理框架研究

发布时间：2018-07-04 08:21

本文选题：云计算 + 服务等级协议　；参考：《南京航空航天大学》2012年硕士论文

【摘要】：在计算机软硬技术的飞速发展下，计算模型进行了不断演化，继分布式计算、并行计算和网格计算等模型之后，计算机工业界与学术界提出了云计算模型。它是一个革命性的举措，意味着计算能力也可以作为一种商品进行流通，就像煤气、水电一样，取用方便，费用低廉。不同之处在于它通过互联网将超大规模的计算存储资源整合起来，形成一个虚拟的计算资源池，并以服务的形式按需提供给用户。云计算带来的服务整合与按需供给能够显著提高计算资源的利用率，降低资源的能耗量，并且有效屏蔽计算资源的出错问题。由于云计算环境中存在着一系列隐患，如可用性和性能保障，安全性，隐私等等，如何保证云提供商所提供服务质量满足云消费者的需求是目前云计算面临的一个重要问题。服务等级协议(Service Level Agreement，SLA)将成为确保服务提供商和服务消费者双方利益得到保证一个关键因素。本文结合云计算环境，提出了一种云计算中SLA管理框架。主要工作分为以下四个方面：首先，本文归纳了云计算领域当前的现状，分析了云计算与SLA结合的重要性和必然趋势，提出了云计算中SLA管理框架。其次，分析了云服务消费者和云服务提供商之间的SLA的协商生成过程，将该过程分成SLA预协商和SLA协商两个阶段，分别采用预协商文档和SLA协商模板来进行协商，提高了SLA协商的效率。然后，，提出了云计算中资源度量到SLA参数度量的映射结构，并为了预防SLA违例，设计了基于CBR的QoS知识库，储存SLA违例数据以及与其关联的解决方案，采用已有案例的解决方案来预防SLA违例。最后，在Hadoop平台上，部署实现了云计算环境中SLA管理框架原型系统，并将软件可信评估应用其中，验证该框架方案的可行性。
[Abstract]:With the rapid development of computer soft and hard technology, computing models have been evolving. After distributed computing, parallel computing and grid computing, cloud computing models have been proposed by computer industry and academia. It is a revolutionary move, meaning that computing power can also be circulated as a commodity, as easy to access and inexpensive as gas and hydropower. The difference is that it integrates large scale computing storage resources through the Internet, forms a virtual computing resource pool, and provides it to users on demand in the form of services. The service integration and on-demand supply brought by cloud computing can significantly improve the utilization of computing resources, reduce the energy consumption of resources, and effectively shield the error problem of computing resources. Due to a series of hidden dangers in cloud computing environment, such as availability and performance guarantee, security, privacy and so on, how to ensure the quality of service provided by cloud providers to meet the needs of cloud consumers is an important problem cloud computing is facing. Service level agreements (SLAs) will be a key factor to ensure that the interests of both service providers and service consumers are guaranteed. Combined with cloud computing environment, this paper proposes a SLA management framework in cloud computing. The main work is divided into the following four aspects: firstly, this paper summarizes the current situation of cloud computing, analyzes the importance and inevitable trend of the combination of cloud computing and SLA, and puts forward the SLA management framework in cloud computing. Secondly, the negotiation generation process between cloud service consumers and cloud service providers is analyzed. The process is divided into two stages: SLA pre-negotiation and SLA negotiation, which are negotiated by pre-negotiation document and SLA negotiation template, respectively. It improves the efficiency of SLA negotiation. Then, the mapping structure from resource metrics to SLA parameter metrics in cloud computing is proposed. In order to prevent SLA violations, a CBR-based QoS knowledge base is designed to store SLA violation data and its associated solutions. Use existing case-based solutions to prevent SLA violations. Finally, the SLA management framework prototype system in cloud computing environment is implemented on Hadoop platform, and the software trusted evaluation is applied to verify the feasibility of the framework.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP3

【参考文献】