修改 /etc/emqx/emqx.conf 的配置项
## Allow anonymous authentication by default if no auth plugins loaded. ## Notice: Disable the option in production deployment! ## ## Value: true | false allow_anonymous = false ## Allow or deny if no ACL rules matched. ## ## Value: allow | deny acl_nomatch = deny
重启emqx
emqx restart
原文：https://www.cnblogs.com/xiaojf/p/13169767.html