Architecture of Connectivity-aware Redundancy Control Module for Distributed Resource Management in InfaaS-AP

Abstract

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Information-as-a-Service (InfaaS) is a key concept for collaborative disaster management applications. For developing a collaborative disaster management application based on InfaaS concept, the control in infrastructure-layer is required. We have been developing InfaaS-adaptive Disaster Management Application Platform (InfaaS-AP) to support the construction and operation of collaborative disaster management applications that satisfy InfaaS concept. InfaaS-AP leverages multiple existing Software-Defined technologies, each of which has a dedicated controller. All controllers are centrally managed by Resource Management System (RMS) in InfaaS-AP. Though availability is critical for InfaaS-AP, RMS in current InfaaS-AP is a single point of failure. It is due to the connectivity between RMS and the controllers. RMS with redundant configuration requires maintaining connectivity after fail-over. In addition, since each controller has its own redundancy mechanism, the behavior of the redundancy mechanism makes it difficult to maintain the connectivity. From such a situation, we propose the connectivity-aware redundancy control module. The proposed module not only handles the fail-over of RMS but also monitors and interrupts the behavior of the redundancy mechanism of each controller. In the evaluation, we conducted experiments in which one of the controllers or RMS was stopped and checked the behavior of the proposed module.