基于生灭过程的机群系统高可用性分析与设计

The Design and Analysis of Cluster's High Availability Based on Birth－ Death Process

文章在对机群系统的运行特性进行分析的基础上，运用马氏过程描述了机群系统中的高可用性（ High Availability），并从理论上建立了基于生灭过程的机群高可用模型。文中在给出机群高可用管理软件结构的基础上，设计了一种基于集中式结构的主副容错协议；通过可用度的分析结果得出：机群高可用系统采用了可修复性技术后，只要有一个 HA节点能正常工作，该系统是“可用”的。

In this paper,we firstly construct the cluster system availability model based on Birth－ death process. Then we propose the software architecture of the cluster's high availability system. The conclusion is that as long as one node in cluster is running,the whole system,which adopts the autodetect and takeover recovery technology,will be available.