Paper Info
Title
An Integrated Approach for Specifying and Enforcing SLAs for Cloud Services
Abstract
Cloud computing has evolved from the provisioning of virtual machines to the provisioning of complex services, delivered to customers under the terms of Service-Level Agreements (SLAs). SLAs specify the Quality of Service (QoS) that should be provided to customers as well as the billing model. A main concern for cloud service providers is to maintain the agreed SLA terms in order to avoid losses and penalties. Maintaining the SLA in turn requires translating the QoS to configurations of low-level mechanisms, able to enforce the agreed terms. Current systems provide no integrated support for SLA specification, translation, and enforcement. In this paper, we propose an approach for specifying and enforcing SLAs for cloud service providers. The approach covers the creation of SLA templates under a billing model, the design of performance and fault-tolerance QoS assurance mechanisms as well as the translation of QoS to appropriate configurations of those mechanisms. We demonstrate the feasibility of our approach by using the Qu4DS framework for PaaS cloud providers. Moreover, we evaluate the impact of failures on the provider profit. The experiments were carried out on the Grid5000 testbed and demonstrate the effectiveness of ensuring fault tolerance in different scenarios.
Year
DOI
Venue
2012
10.1109/CLOUD.2012.135
Cloud Computing
Keywords
Field
DocType
cloud computing,fault tolerant computing,quality of service,virtual machines,Grid5000 testbed,PaaS cloud providers,Qu4DS framework,SLA,cloud computing,cloud services,complex services,fault-tolerance QoS assurance mechanisms,quality of service,service-level agreements,virtual machines,QoS,SLA,cloud,grid,service
Mobile QoS,Virtual machine,Computer science,Computer network,Quality of service,Testbed,Real-time computing,Provisioning,Fault tolerance,Grid,Cloud computing,Distributed computing
Conference
ISSN
ISBN
Citations 
2159-6182
978-1-4673-2892-0
7
PageRank 
References 
Authors
0.49
15
3
Name
Order
Citations
PageRank
André Lage Freitas1102.59
Nikos Parlavantzas246047.62
Jean-Louis Pazat3252.65