A brokerless framework for efficient resource provisioning facilitating a multi cloud

Abstract

In an inter-operating cloud environment, when the demands of a cloud s user are met by another cloud, termed External Cloud (EC) , the resources provided by the EC must be available to the user for as long as it is required. However, there arises situations in which the EC shuts down for maintenance or other purposes. In such situations, the cloud that borrows resources from the EC must provide an alternate solution to its affected users, as a measure to prevent violation of the Service Level Agreement (SLA). Globally popular public clouds maintain multiple duplications of the current state of all the provided resources and substitute the borrowed resources with any of these duplicate states in these situations. However, due to insufficient resource availability for redundancy, other clouds, mostly private clouds, will not be able to handle these situations, leading to loss or unavailability of resources to the users. This thesis concentrates on this problem which appears to be unsolved from an analysis of the related works. Broadly, inter-operating cloud environments are classified into two categories: Federation and Multi-cloud. The former is an environment where interaction between clouds is voluntary, while the same is not true in the latter. Hence, federated environments, with their inherent nature of establishing communication between only a static set of clouds, work without the use of intermediary brokers. But, without such brokers, none of the existing multicloud environments will be functional. In this thesis, the first-of-a-kind attempt is made to build a multi-cloud environment that works in the absence of third parties of any sort, thereby setting up a brokerless multi-cloud environment. newline