SEVERE: Unable to join multicast group, make sure your system has multicasting enabled.

    组建tomcat集群时明明配置都没问题，tomcat就是起不来，查看日志得到

SEVERE: Unable to join multicast group, make sure your system has multicasting enabled.

的信息，最后才知道，没有设置网关。。。。。。。真坑！！！记录下来第一个坑！！！

转载于:https://blog.51cto.com/xiaofengfeng/1896514