rancher ELK环境搭建，日志收集搜索

http://www.cnrancher.com/using-containers-elasticsearch-cluster-twitter-monitoring/

https://guojicheng.gitbooks.io/xue_xi_bi_ji/content/rancher-%E5%B9%B3%E5%8F%B0%E9%83%A8%E7%BD%B2%E7%8E%AF%E5%A2%83%E6%80%BB%E7%BB%93%E4%B9%8B%E4%B8%80%EF%BC%88elk-stack.html

https://zhuanlan.zhihu.com/p/24912074

http://blog.csdn.net/u011350440/article/details/48581723

https://segmentfault.com/a/1190000007693996