官方文档:https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html
修改/etc/security/limits.conf文件追加如下内容(es运行用户为elasticsearch)
elasticsearch hard nofile 65535
elasticsearch soft nofile 65535
二进制安装包下载地址:https://www.elastic.co/cn/downloads/past-releases
Ansible脚本GitHub地址:https://github.com/elastic/ansible-elasticsearch