Research On Cooperative Computing Method In Distributed Multi-cloud Architecture

As a new type of computing resource organization and service provision,cloud computing has become the main information infrastructure of national major industry application.Centralized computing-intensive cloud computing platform can not meet the requirements of distributed resource allocation in data-centric applications,and can not meet the basic real-time needs of safe city,vehicle network and so on.Providing more secure,real-time,accurate service for the Internet of Things and other complex applications has become a major bottleneck in the application and development of cloud computing platform.In view of the above problems,this paper focuses on the collaborative computing method of "center cloud-edge cloud-terminal" in distributed multi-cloud environment,studies the "cloud-cloud" cross-cloud resource coordination management and "terminal-cloud" resource negotiation and distribution mechanism respectively.In order to realize the collaborative management and allocation of cloud resources,a distributed multi-domain cloud computing resource management architecture is designed.The architecture has the characteristics of cloudy collaboration,rapid deployment and strong expansibility,Which overcomes the problems such as high degree of dependence in network and poor service real time on centralized cloud architecture,and satisfies the demand of real-time applications such as Internet of Things and big data.On the basis of this,a method of multi-domain collaborative resource management is proposed,the central cloud develops the resource allocation strategy according to the user's mission requirements,collaborates and organizes the computing and storage resources of the edge cloud to ensure the needs of "cloud-cloud" resource collaborative management.In order to guarantee the security of "cloud-cloud",a security authentication method based on the combination of Role-Based Access Control and U-shield hardware encryption is proposed to solve the problem of authentication and traceability in distributed multi-domain environment.In order to study the negotiation mechanism of "edge cloud–terminal" resources,a "terminal-cloud" collaborative computing model is proposed to complete the access of terminal heterogeneous resources,the task negotiation and fault tolerance of "terminal-cloud" collaborative computing.A distributed "terminal-cloud" scheduling algorithm of task assignment is proposed to ensure the minimum time of task calculation and improve the efficiency of resource utilization under heterogeneous resources.A fault-tolerant method based on cloud-backup and cloud-recovery is proposed to ensure the reliability of "terminal-cloud" cooperative computing.On the basis of the above research,the distributed multi-domain cloud computing platform and the "terminal-cloud" collaborative computing prototype system are designed and implemented.The results show that the platform can meet the needs of multi-domain cooperative resource management,and can provide basic service of cloud host and cloud storage for users.A series of tests are carried out for the "terminal-cloud" collaborative computing prototype system,and the test results verify "terminal-cloud" collaborative computing method proposed in this paper,and achieve the desired effect.