https://www.emqx.io/cn/downloads
wget https://www.emqx.io/downloads/broker/v4.0.5/emqx-centos7-v4.0.5.zip
/usr/local/emqttd/bin/emqx start


直接进入控制台模式：

$ ./bin/emqx console

后台运行模式：

$ ./bin/emqx start

$ ./bin/emqx_ctl status

$ ./bin/emqx stop

MQTT链接地址：tcp://192.168.10.8:1883
管理后台地址：http://192.168.10.8:18083
账号：admin
密码：public