集中式日志系统 ELK 协议栈详解
https://www.ibm.com/developerworks/cn/opensource/os-cn-elk/
ELK+Filebeat 集中式日志解决方案详解
https://www.ibm.com/developerworks/cn/opensource/os-cn-elk-filebeat/index.html
https://www.ibm.com/developerworks/cn/opensource/os-cn-elk/
https://www.ibm.com/developerworks/cn/opensource/os-cn-elk-filebeat/index.html