在腾讯云服务器上搭建了emqtt服务器，服务器版本centos7，直接用官网的步骤一步一步来就好了。
Linux 通用包安装
EMQ Linux 通用程序包:
Ubuntu12.04
Ubuntu14.04
Ubuntu16.04
安装包命名由平台、版本组成，例如: emqttd-macosx-v2.0.zip
CentOS 平台为例，下载安装过程:
unzip emqttd-centos7-v2.0.zip
控制台调试模式启动，检查 EMQ 是否可正常启动:
cd emqttd && ./bin/emqttd console
EMQ 消息服务器如启动正常，控制台输出:
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 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:http listen on 0.0.0.0:18083 with 2 acceptors.
mqtt:tcp listen on 0.0.0.0:1883 with 8 acceptors.
mqtt:ssl listen on 0.0.0.0:8883 with 4 acceptors.
mqtt:ws listen on 0.0.0.0:8083 with 4 acceptors.
Erlang MQTT Broker 2.0 is running now
CTRL+c 关闭控制台。守护进程模式启动:
./bin/emqttd start
启动错误日志将输出在 log/ 目录。
EMQ 消息服务器进程状态查询:
./bin/emqttd_ctl status
正常运行状态，查询命令返回:
$ ./bin/emqttd_ctl status
Node 'emqttd@127.0.0.1' is started
emqttd 2.0 is running
EMQ 消息服务器提供了状态监控 URL
http://localhost:8080/status
停止服务器:
./bin/emqttd stop