Composable Services Architecture for Dynamically Configurable Virtualised Infrastructure Services Provisioning

Effective use of existing network and IT infrastructure can be achieved by providing combined network and IT resources on-demand as infrastructure services that are capable of supporting complex scientific experiments, technological processes, and collaborative groups of researchers and applications. The paper provides a short overview of the existing standards and technologies and refers to the on-going projects and experiences in developing architectural frameworks and tools for ondemand network and Grid/Cloud services provisioning. The paper proposes the Composable Services Architecture (CSA) that is intended to provide a conceptual and methodological framework for developing dynamically configurable virtualised infrastructure services. The paper discusses another important component of the proposed architecture the CSA Service Delivery Framework (SDF) that provides a basis for defining the whole composable services life cycle management (provisioned on-demand) and supporting infrastructure services. The proposed CSA SDF extends the existing services lifecycle management frameworks with additional stages such as “Registration and Synchronisation” and “Reservation Session Binding” that specifically target such scenarios as the provisioned resources restoration or migration/re-planning and provide a mechanism for consistent security services provisioning as an important component of the provisioned on-demand infrastructure services. The presented architecture is the result of the ongoing cooperative effort of the two EU project GEANT3 JRA3 Composable Services and GEYSERS and currently considered to be contributed to the Open Grid Forum standardisation activity.