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https://www.elastic.co/guide/en/elasticsearch/plugins/current/discovery-multicast-usage.html
http://blog.csdn.net/changong28/article/details/38377863
https://www.zybuluo.com/wtf0215/note/342204
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原文地址：http://www.cnblogs.com/iiiiher/p/5727938.html
