The Research And Design Of Monitoring And Discovery Service In Grid Environment

The resource monitoring and discovery is highlighted as the essential criteria for building grid. As the foundation of resource monitoring and task distribution, resource investigation offers necessary performance data regarding the resource for the other grid mid-layer components. The resource discovery can be identified as the process that using specific methods to achieve the required information according to the requests from the users or applications. Resource discovery is an important instrument for the grid computing. In order to realize the function of resources sharing, a effective resource discovery mechanism aimed for the reliable, flexible and effective service is vital regarding the condition of numerous resources, multiple ranges and domains in WAN.Based on the research of Globus framework and MDS module, this paper analyzed the main functions of resource monitoring and discovery and determined the design of the system. The Web Service and DOM resolution are managed to design and implement the resource monitoring and discovery module in grid environment.(1) Based on the research of grid, the comparisons about OGSI and WSRF which are the detailed modules under the OGSA grid service architecture are made in this paper. Since WSRF has significant advantage than OGSI, it is chosen as the module researched in this paper.(2) According to the research and analysis about the theory of MDS4 under GT4, the methodology of the combination of Web Service and DOM is designed to realize the development of resource monitoring and discovery service in storage grid, which aimed to offer real-time node resource information according to the MDS (Monitoring and Discovery Service) requests from storage grid.(3) This design is developed and deployed on GT4.0, providing a sample for follow-up.