官网地址https://www.emqx.io/docs/zh/v3.0/install.html
# 1. 安装
修改mqtt默认访问端口1883
```
emqx/etc/emqx.conf
listener.tcp.external = 0.0.0.0:10020
```
修改控制台
```
emqx/etc/plugins/emqx_dashboard.conf
dashboard.listener.http = 10021
```
启动
```
emqx/bin/emqx start/stop/restart
```
登录控制台
```
http://36.49.91.248:10021/
```
# 2. 配置用户名密码登录
**1. 禁止匿名访问**
```
allow_anonymous = false
acl_nomatch = deny
```
**2. 启用认证插件**
```
./emqx_ctl plugins load emqx_auth_username
```
**3. 添加用户**
```
./emqx_ctl users add admin 123456
```
```
./emqx_ctl users list
admin
```