SIMULADOR PARA MINIMIZAR LA VIOLACIÓN DE ACUERDOS DE NIVELES DE SERVICIO (SLAs) EN ARQUITECTURAS DE NUBES BASADAS EN MECANISMOS DE MERCADO

Abstract

The present project consists of the design of a model to analyze violations on SLAs (Service Level Agreements) within a Cloud architecture, based on market mechanisms. A violation occurs when the provider does not meet the requirements established in the SLA. Minimizing violations in order to guarantee fulfillment of Service Level Agreements is indeed key to ensure a positive client-provider relationship. Therefore, market mechanisms and reputation systems analyses will be conducted in order to design a model to reduce the number of such violations. During the design model stage, the use of a market mechanism and the reputation system will allow the user to choose a provider, not only considering the price of the service, but its reputation. It is therefore expected that services be allocated with providers that have a higher reputation and a lower fail rate. The experimentation stage will be conducted in a simulator implemented over the CloudSim framework. Data for the simulation and simulation results will be handled using XML format. Furthermore, results will be presented through graphs created with the JFree-Chart library to facilitate its interpretation. Finally, R statistical language will be used to process the results obtained and generate charts of the violations occurred during the simulation for the market mechanisms and reputation systems previously selected.