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

# 允許匿名用戶連接（默認為 true，我們先關閉它）
allow_anonymous false# 指定密碼文件路徑
password_file /etc/mosquitto/passwd# 設置監聽器（可選，確保它在監聽本地和/或網絡）
listener 1883

sudo chmod 644 /etc/mosquitto/passwd

查看日志

/var/log/mosquitto/mosquitto.log

# 第二個用戶
sudo mosquitto_passwd  /etc/mosquitto/passwd user2

測試

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"