https://www.cnblogs.com/xiaobaixie/p/11210595.html
安装elastic head https://github.com/mobz/elasticsearch-head
elasticsearch工作笔记002—Centos7.3安装最新版elasticsearch-7.0.0-beta1-x86_64.rpm单机版安装 https://blog.csdn.net/lidew521/article/details/88091539
elasticsearch用户拥有的内存权限太小，至少需要262144； https://www.cnblogs.com/yidiandhappy/p/7714489.html
Elasticsearch核心配置文件详解 https://www.cnblogs.com/wanghaichao/p/9910722.html
配置文件elasticsearch.yml详解 https://www.cnblogs.com/chuijingjing/p/10023783.html
Laravel5.5 使用 Elasticsearch 做引擎，scout 全文搜索 https://learnku.com/articles/20311
laravel使用Elasticsearch例子： https://learnku.com/articles/30812
