在阿里云Centos 7上安装mosquitto

1. 下载repos源

     1) wget http://download.opensuse.org/repositories/home:/oojah:/mqtt/CentOS_CentOS-7/home:oojah:mqtt.repo -O home_oojah_mqtt.repo

     2) mv home_oojah_mqtt.repo /etc/yum.repos.d/

2. 安装mosquitto   

     1) yum install mosquitto.x86_64

     如果出现GPG keys下载失败，导致错误的问题。 就手动rpm --import  http://xxx.xxx.xxx/xxx-KEY

     2) yum install mosquitto-clients.x86_64

     3) yum install mosquitto-debuginfo.x86_64

     4) mosquitto-debuginfo.x86_64

3. 测试

   1) 启动broker: 

       mosquitto -d

   2) 启动订阅客户端

      mosquitto_sub  -t sensors/temperature -q 1

   3) 启动推送消息客户端

     mosquitto_pub -t sensors/temperature -m 32 -q 1