How To Set Up A Loadbalanced High-Availability Apache Cluster
http://www.howtoforge.com/high_availability_loadbalanced_apache_cluster

实例讲解4台apache做集群的方法，两个apache结点，两个balaner

Advanced MySQL Replication Techniques
http://www.onlamp.com/pub/a/onlamp/2006/04/20/advanced-mysql-replication.html

mysql 5的集群，只做过slave master的集群，文章介绍的方法，听说不是很稳定，还没有尝试！

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