基于集群的Apache服务器进程迁移技术及实现

利用Linux操作系统检查点机制，中断正在运行的Apache服务器进程，进行核心转储产生了Core文件，在这个Core文件中保存被中断进程的上下文。位于集群中另外一个结点上的空闲Apache服务器进程重新加载Core文件，恢复被中断进程的上下文，恢复进程中断前打开的文件和网络连接,实现Apache服务器进程的迁移，并给出了集群中Apache服务器进程迁移的理论研究和实现技术。

Technique and implementation of Apache server process migration based on cluster

The authors use the checkpoint mechanism of the Linux operating system to interrupt the running process of the Apache server and create Core file which can save the context of the interrupted process of the Apache server. In another node of this cluster, an idle process of Apache server loads the Core file to resume the context of interrupted process, the net connections and the opened files of the process in succession. So the process migration of Apache server is implemented. And technique of the Apache server process migration based on the cluster is given.