mod_cluster not working

https://docs.jboss.org/mod_cluster/1.3.0/faq.html#d0e5594
http://www.mastertheboss.com/jboss-server/jboss-cluster/troubleshooting-mod-cluster
http://www.cyberciti.biz/faq/turn-on-turn-off-firewall-in-linux/

查看iptables

iptables -L -n

mod_cluster导常

可能是防火墙导致，暂时关闭防火墙查看可以正常工作

## 关闭
/etc/init.d/iptables save
/etc/init.d/iptables stop

## 开启
/etc/init.d/iptables start