安装
curl -H "Content-Type:application/json" -XPOST http://localhost:9200/_xpack/license/start_trial?acknowledge=true（启用 trial license）
curl -H "Content-Type:application/json" -XPOST -u elastic 'http://localhost:9200/_xpack/security/user/elastic/_password' -d '{ "password" : "111111" }' 修改密码命令
配置
在elasticsearch.yml文件中添加
elasticsearch-6.3.0/bin/elasticsearch-setup-passwords interactive（设置用户名密码）
head插件访问
添加如图配置
http://localhost:9100/?auth_user=elastic&auth_password=you_pass
