Implementation of OGSA Services in Grid Environment

Abstract

Grid systems and applications aim to integrate, virtualize, and manage resources and services within distributed, heterogeneous, dynamic, virtual environment. Here a service-oriented architecture, Open Grid Services Architecture (OGSA) vision of a broadly applicable and adopted framework for distributed system integration, virtual- ization, and management requires the definition of a core set of interfaces, behaviors, resource models, and bindings. This thesis contains information about main features of OGSA, implementation of service Provisioning Directory Service which exposes the local file system's directory hierarchy to remote grid clients. It allows listing the contents of the current working directory and change the current working directory. Other grid service Migration Service which is responsible for coordinating the migration of a selected service from one host at a service provider to either another host at the same service provider. To address these challenges, a migration facility is proposed, as part of automatic and transparent brokerage, focused on migrating Grid services. Such a facility addresses reconfiguration by providing mechanisms to migrate a service from one host to another automatically as the grid changes. A migration facility addresses reliability by providing mechanisms to move a service from a host which may be in the process of failing, or which must be taken offline. Finally, a migration facility addresses optimization. Services can be migrated to faster hosts as they become available or join the grid, improving the overall performance of a Grid service. Results are analyzed accordingly.