sudo apt update
sudo apt install mosquitto mosquitto-clients
sudo mosquitto_passwd -c /etc/mosquitto/passwd myuser
sudo nano /etc/mosquitto/mosquitto.conf

# 允许匿名用户连接（默认为 true，我们先关闭它）
allow_anonymous false# 指定密码文件路径
password_file /etc/mosquitto/passwd# 设置监听器（可选，确保它在监听本地和/或网络）
listener 1883

sudo chmod 644 /etc/mosquitto/passwd

查看日志

/var/log/mosquitto/mosquitto.log

# 第二个用户
sudo mosquitto_passwd  /etc/mosquitto/passwd user2

测试

mosquitto_sub -h localhost -t "test/topic" -u "myuser" -P "your_password"
mosquitto_pub -h localhost -t "test/topic" -m "Hello Secure MQTT!" -u "myuser" -P "your_password"