本文详细介绍了，如何在linux环境搭建一个MQTT server, 并同时安装 了客户端 ，进行了mqtt消息发布、订阅验证。

mosquitto 服务端安装(ubuntu)

#添加源
sudo apt-add-repository ppa:mosquitto-dev/mosquitto-ppasudo apt update # install mosquitto
sudo apt-get -y install  mosquitto#修改配置文件
cat  /etc/mosquitto/mosquitto.conf
persistence true
persistence_location /var/lib/mosquitto/log_dest file /var/log/mosquitto/mosquitto.loginclude_dir /etc/mosquitto/conf.d# start
sudo /etc/init.d/mosquitto start

mosquitto 客户端安装

(base) WuGTech@WuGTech:~$ sudo apt-get install mosquitto-clients

验证安装效果

订阅消息

mosquitto_sub -t 5g
#或者
mosquitto_sub -u xxx -P xxx -t 5g#或者
mosquitto_sub -h localhost -t "5g/#" -i "client1"  -u xxx -P xxx

发布消息

mosquitto_pub -t 5g
#或者
mosquitto_pub -u xxx -P xxx -t 5g#或者
mosquitto_pub -h localhost -t "5g/test" -i "client2" -m "How are you?" -u xxx -P xxx

验证

^C(base) WuGTech@WuGTech:~$ mosquitto_sub -h localhost -t "5g/#" -i "client1"  -u xxx -P xxx
How are you?(base) WuGTech@WuGTech:~$ mosquitto_pub -h localhost -t "5g/test" -i "client3" -m "How are you?" -u xxx -P xxx
(base) WuGTech@WuGTech:~$ 

日志

(base) WuGTech@WuGTech:~$ sudo cat /var/log/mosquitto/mosquitto.log1750320791: New connection from ::1:40694 on port 1883.
1750320791: New client connected from ::1:40694 as client1 (p2, c1, k60, u'bruce').
1750320875: Client client1 disconnected.
1750320878: New connection from ::1:52248 on port 1883.
1750320878: New client connected from ::1:52248 as auto-0C77BCD5-EDD7-7913-D5BE-B4D5F5655632 (p2, c1, k60).
1750320895: Client auto-0C77BCD5-EDD7-7913-D5BE-B4D5F5655632 disconnected.
1750320896: New connection from ::1:36050 on port 1883.
1750320896: New client connected from ::1:36050 as auto-16E03451-D46A-55FE-BFFA-3AB710949EE2 (p2, c1, k60, u'yang').