Abstract
Cloud computing has emerged as powerful technology with various use cases in different environments. The goal of these use cases is to provide services to users on demand. These use cases vary from application to application, but service level agreement (SLA) management plays an important role in all of them. SLA management is an essential part of service provisioning environment. Automated SLA management is a necessary part of large production environments, where business heavily depends on customer satisfaction. In this paper we discuss a generalized SLA management framework and propose a generic framework for automated SLA enforcement based on feedback control system. We have selected various SLA metrics, describe inputs and outputs for those metrics and we propose enforcement methodology based on control theory. We define formal model based on control theory for availability metric. It is seen that feedback control automates the SLA enforcement with accuracy. Multiple SLA metrics can be enforced using this approach.
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