1.下载
1.1：MQTT服务器软件下载地址：http://emqtt.com/downloads ，复制链接ununtu对应的版本！
1.2：主机下载MQTT软件，在控制台输入：
wget http://emqtt.com/static/brokers/emqttd-ubuntu16.04-v2.2.0.zip
2.解压缩
2.1先安装解压压缩包 软件，控制台输入 :
sudo apt-get install unzip
2.2解压Emqtt的压缩包,控制台输入:
unzip emqttd-ubuntu16.04-v2.2.0.zip
结果：名为emqtt的目录被解压缩出来
3.以console模式启动emqttd
cd emqttd && ./bin/emqttd console
结果：
starting emqttd on node ‘emqttd@127.0.0.1’
emqttd ctl is starting…[ok]
emqttd hook is starting…[ok]
emqttd router is starting…[ok]
emqttd pubsub is starting…[ok]
emqttd stats is starting…[ok]
emqttd metrics is starting…[ok]
emqttd retainer is starting…[ok]
emqttd pooler is starting…[ok]
emqttd trace is starting…[ok]
emqttd client manager is starting…[ok]
emqttd session manager is starting…[ok]
emqttd session supervisor is starting…[ok]
emqttd wsclient supervisor is starting…[ok]
emqttd broker is starting…[ok]
emqttd alarm is starting…[ok]
emqttd mod supervisor is starting…[ok]
emqttd bridge supervisor is starting…[ok]
emqttd access control is starting…[ok]
emqttd system monitor is starting…[ok]
dashboard listen on 0.0.0.0:18083 with 4 acceptors.
mqtt listen on 0.0.0.0:1883 with 16 acceptors.
mqtts listen on 0.0.0.0:8883 with 4 acceptors.
http listen on 0.0.0.0:8083 with 4 acceptors.
Erlang MQTT Broker 2.0 is running now
Eshell V7.3 (abort with ^G)
- 退出console模式，后台启动
Ctrol+C，a 退出console
./bin/emqttd start 后台启动emqttd
./bin/emqttd_ctl status 检查启动状态
结果：
Node ‘emqttd@127.0.0.1’ is started
emqttd 2.0 is running
在浏览器地址输入
http://主机地址:18083/
调试设备
