| As the operation and maintenance equipment and operation and maintenance information of the State Grid Corporation of China has increased year by year,the existing operation and maintenance audit system has been stretched in terms of performance and reliability.Enterprises typically use mainframes to meet performa nce and reliability requirements,but because mainframes are expensive and costly to maintain,they are difficult to roll out.The emergence of clustered high availability technology solves these problems fundamentally.Operation and maintenance audit system Server cluster high availability system is the main purpose is to ensure that the operation and maintenance audit system and server system efficient,continuous and reliable operation,to provide users with a higher experience,and improve the core competitiveness of enterprises.This thesis first studies the relevant theoretical knowledge of high availability clusters,including the basic concepts and characteristics of clusters,the concept and classification of high availability clusters and the fault tolerance mechanism of high availability clusters.Then,the key techniques of high availability of server cluster are analyzed and studied,including data synchronization technology,heartbeat detection technology,virtual IP technology and service switching technology.The analysis of key technologies is mainly from its principle and implementation on the cut.Finally,according to the design of the system and the characteristics of the operation and maintenance audit system,the realization of the key technologies are given.According to the requirement of OAS and server cluster high-availability system,this thesis designs the overall framework of high availability system of server cluster and the realization of each key module after HA.And through the system performance test,it verifies the correctness and validity of the proposed scheme. |
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