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http://blog.csdn.net/dl2277130327/article/details/77677275
http://wdxtub.com/2016/08/17/rsyslog-kafka-guide/
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http://www.elain.org/2016/04/26/ELK实战二：日志收集利器rsyslog/
http://www.elain.org/2016/02/15/ELK实战一:架构的选择/