logstash 相关

官方文档：

https://www.elastic.co/guide/en/logstash/current/index.html

安装教程：

http://storysky.blog.51cto.com/628458/1158707/

ruby gem源替换：

http://blog.sina.com.cn/s/blog_6ae8b50d0101fdjb.html

centos7关闭防火墙

http://www.cnblogs.com/silent2012/archive/2015/07/28/4682770.html

linux 解压缩命令大全

http://www.cnblogs.com/eoiioe/archive/2008/09/20/1294681.html

java log

http://singleant.iteye.com/blog/934593