Dynamic SLA Negotiation in Autonomic Federated Environments

Pawel Rubach^1,2 and Michael Sobolewski¹

¹Computer Science, Texas Tech University, SORCER Research Group, Box 43104 Boston & 8th, Lubbock, TX 79409, USA
pawel.rubach@sorcersoft.org
sobol@sorcersoft.org

²Business Informatics, Warsaw School of Economics, Al. Niepodleglosci 162, 02-554 Warszawa, Poland

Abstract. Federated computing environments offer requestors the ability to dynamically invoke services offered by collaborating providers in the virtual service network. Without an efficient resource management that includes Dynamic SLA Negotiation, however, the assignment of providers to customer’s requests cannot be optimized and cannot offer high reliability without relevant SLA guarantees. We propose a new SLA-based SERViceable Metacomputing Environment (SERVME) capable of matching providers based on QoS requirements and performing autonomic provisioning and deprovisioning of services according to dynamic requestor needs. This paper presents the SLA negotiation process that includes on-demand provisioning and uses an object-oriented SLA model for large-scale service-oriented systems supported by SERVME. An initial reference implementation in the SORCER environment is also described.

Keywords: SLA Negotiation, QoS, SLA, Metacomputing, Service-Oriented Architecture, SORCER

LNCS 5872, p. 248 ff.

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