[toc]
1. LVS+Keepalived
LVS+Keepalived+Tomcat/Nginx/其他web服务/mysql
2. Haproxy+Heartbeat
Haproxy+Heartbeat+Tomcat/Nginx/其他web服务/mysql
3. Haproxy+Keepalived
Haproxy+Keepalived+Tomcat/Nginx/其他web服务
4. Nginx+Keepalived
Nginx+Keepalived+Tomcat/Nginx/其他web服务