NDLI: Autonomic Configuration Adaptation Based on Simulation-Generated State-Transition Models

Content Provider	IEEE Xplore Digital Library
Author	Smit, M. Stroulia, E.
Copyright Year	2011
Abstract	Configuration management is a complex task, even for experienced system administrators, which makes self-managing systems a particularly desirable solution. This paper describes a novel contribution to self-managing systems, including an autonomic configuration self-optimization methodology. Our solution involves a systematic simulation method that develops a state-transition model of the behavior of a service-oriented system in terms of its configuration and performance. At run time, the system's behavior is monitored and classified in one of the model states. If this state may lead to futures that violate service level agreements, the system configuration is changed toward a safer future state. Similarly, a satisfactory state that is over-provisioned may be transitioned to a more economical satisfactory state. Aside from the typical benefits of self-optimization, our approach includes an intuitive, explainable decision model, the ability to predict the future with some accuracy avoiding trial-and-error, offline training, and the ability to improve the model at run-time. We demonstrate this methodology in an experiment where Amazon EC2 instances are added and removed to handle changing request volumes to a real service-oriented application. We show that a knowledge base generated entirely in simulation can be used to make accurate changes to a real-world application.
Starting Page	175
Ending Page	179
File Size	371554
Page Count	5
File Format	PDF
ISBN	9781457710278
DOI	10.1109/SEAA.2011.36
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	Finland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement Adaptation models Web services Simulation Self-configuring software Data models Servers Service-oriented architectures Monitoring Autonomic computing Load modeling Adaptation
Content Type	Text
Resource Type	Article

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