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On Controlling Elasticity of Cloud Applications in CELAR
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Author(s): Georgiana Copil (Vienna University of Technology, Austria), Daniel Moldovan (Vienna University of Technology, Austria), Hung Duc Le (Vienna University of Technology, Austria), Hong-Linh Truong (Vienna University of Technology, Austria), Schahram Dustdar (Vienna University of Technology, Austria), Chrystalla Sofokleous (University of Cyprus, Cyprus), Nicholas Loulloudes (University of Cyprus, Cyprus), Demetris Trihinas (University of Cyprus, Cyprus), George Pallis (University of Cyprus, Cyprus), Marios D. Dikaiakos (University of Cyprus, Cyprus), Ioannis Giannakopoulos (National University of Athens, Greece), Nikolaos Papailiou (National University of Athens, Greece), Ioannis Konstantinou (National University of Athens, Greece), Craig Sheridan (FLEXIANT, UK), Christos K. K. Loverdos (Greek Research and Technology Network, Greece), Evangelos Floros (Greek Research and Technology Network, Greece), Kam Star (PlayGen, UK)and Wei Xing (CRUK Manchester Institute, UK)
Copyright: 2016
Pages: 31
Source title:
Web-Based Services: Concepts, Methodologies, Tools, and Applications
Source Author(s)/Editor(s): Information Resources Management Association (USA)
DOI: 10.4018/978-1-4666-9466-8.ch086
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Abstract
Today's complex cloud applications are composed of multiple components executed in multi-cloud environments. For such applications, the possibility to manage and control their cost, quality, and resource elasticity is of paramount importance. However, given that the cost of different services offered by cloud providers can vary a lot with their quality/performance, elasticity controllers must consider not only complex, multi-dimensional preferences and provisioning capabilities from stakeholders but also various runtime information regarding cloud applications and their execution environments. In this chapter, the authors present the elasticity control approach of the EU CELAR Project, which deals with multi-dimensional elasticity requirements and ensures multi-level elasticity control for fulfilling user requirements. They show the elasticity control mechanisms of the CELAR project, from application description to multi-level elasticity control. The authors highlight the usefulness of CELAR's mechanisms for users, who can use an intuitive, user-friendly interface to describe and then to follow their application elasticity behavior controlled by CELAR.
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