Towards an adaptive QoS-driven monitoring of cloud SaaS
International Journal of Grid and Utility Computing
The abundance of services offered by cloud providers raises the need for Quality of Service (QoS) monitoring to enforce Service Level Agreements (SLAs). In this paper, we propose a cloud-monitoring scheme, which offers flexible and dynamically reconfigurable QoS monitoring services to adapt to various cloud based service characteristics. We propose to grant cloud service consumers the option to decide whether to switch to another service provider, if the current provider frequently violates the
... corresponding SLA contract. For cloud service providers, the monitoring scheme provides dashboard-like indicators to continuously manage the performance of their SaaS platform and visualise the monitoring data. Our experimental evaluation involves a real cloud platform to illustrate the capability of our monitoring scheme in detecting and reporting violations of SLAs for both single and composite SaaS services. A particular emphasis on visualisation options is highlighted when revealing and reconfiguring monitoring data in a user-friendly display. in 2006. His main research interests include web services architecture, management and QoS monitoring; web services in MANET; management of communities of web services; web services applications and security; and cloud data centres for intensive e-health data, applications, and services; SLA enforcement in cloud data centres, architectures for e-health monitoring and prevention-based SOA and cloud. He published a number of research articles, some of which were published in prestigious journals and conferences. Yacine Atif received the PhD degree in Computer Science from Hong Kong University of Science and Technology (HKUST) in 1996. After graduation, he worked at Purdue University in the USA as a Post-Doc and then joined a faculty position at Nanyang Technological University (NTU) in Singapore. Since 1999, he is with the UAE University as a faculty, then Program Chair at the College of Information Technology. He has made a number of research contributions particularly in the area of semantic web and internet computing. He is also involved in the technical programmes of several research forums. Abdelghani Benharref is currently working at the University of Wollongong in Dubai. He received a PhD in Computer Engineering from Concordia University, Canada in 2007. He has been working before for SAP Montreal, Concordia University, Abu Dhabi University, and the United Arab Emirates University. His interest domains include but not limited to: e-health systems, mobile applications, web services, web services composition, management of web service, QoS of web services, cloud computing, software testing, protocol design and validation.