说明：  本文主要讨论了计算机集群系统地高可用性、高性能和可扩展性。通过分析现有数 据库体系的不足，利用计算机集群的高可用性，创建高可用性数据库集群，为用户提供 有力的数据保障，使其具有良好的故障转移、可扩展性、数据一致性的功能。
(This article focuses on the compmer cluster system to high—availability,high performance and scalability by analyzing the existing database system，lack of high availability computer clusters，creating high-availability database clusters，to provide users with powerful data protection SO that it has a good failover,scalability,data consistency function)