Service mediation and negotiation bootstrapping as first achievements towards self-adaptable grid and cloud services

Abstract

Nowadays, novel computing paradigms as for example Grid or Cloud Computing are gaining more and more on importance. In case of Cloud Computing users pay for the usage of the computing power provided as a service. Beforehand they can negotiate specific functional and non-functional requirements relevant for the application execution. However, providing computing power as a service bears different research challenges. On the one hand dynamic, versatile, and adaptable services are required, which can cope with system failures and environmental changes. On the other hand, human interaction with the system should be minimized. In this paper we present the first results in establishing adaptable, versatile, and dynamic services considering negotiation bootstrapping and service mediation achieved in context of the Foundations of Self-Governing ICT Infrastructures (FoSII) project. We discuss novel meta-negotiation and SLA mapping solutions for Grid/Cloud services bridging the gap between current QoS models and Grid/Cloud middleware and representing important prerequisites for the establishment of autonomic Grid/Cloud services. We present document models for the specification of meta-negotiations and SLA mappings. Thereafter, we discuss the sample architecture for the management of meta-negotiations and SLA mappings.

A Process Framework for Designing Software Reference Architectures for Providing Tools as a Service

“…For the software architecting domain, scalability, multi-tenancy and dynamic provisioning are important. For another domain such as software testing, elasticity [12] and reliability [13] can be important. The artifacts that are produced as a result of this activity provide a foundation for runtime architecture quality requirements of TSPACE.…”

An interoperable and self-adaptive approach for SLA-based service virtualization in heterogeneous Cloud environments

“…Consequently, the full potential of publicly available services could be exploited. Figure 9 depicts how the principles of autonomic computing is be applied to negotiation bootstrapping [3]. The management is done through following steps: as a prerequisite of the negotiation bootstrapping users have to specify a meta negotiation (MN) document describing the requirements of a negotiation, as for example required negotiation protocols, required security infrastructure, provided document specification languages, etc.…”

“…Autonomic reaction Propagation non matching SLA templates SLA Mapping as described in [5] no, handled by the meta-negotiation layer non matching SLA languages bootstrapping as described in [3] no, handled by the meta-negotiation layer Monitoring. During the monitoring phase the ASD identifies two critical situations: (i) the autonomous service instance becomes defunct (it is not possible to modify the instance so it could serve requests again) and (ii) the instance turns overloaded on such extent that the underlying virtual machine cannot handle more requests.…”

Cost-Efficient Utilization of Public SLA Templates in Autonomic Cloud Markets

“…However, most of the scientific work addresses technical issues to make systems autonomic, such as the development of negotiation protocols to make Cloud services selfadaptive [13], or considers autonomic service management frameworks without explicitly taking economic methodologies into account [14]- [16]. On the other hand, research on autonomic systems focusing on economic methods and considerations, first proposed by [17], is in its early stage.…”