MQTT安裝

安裝 MQTT Broker（如 Mosquitto）及設定

安裝 Mosquitto：
bash
複製程式碼
sudo apt update

sudo apt install -y mosquitto mosquitto-clients

啟動 Mosquitto 服務：
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sudo systemctl start mosquitto

sudo systemctl enable mosquitto

驗證安裝是否成功：
bash
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mosquitto -v

3. 若安裝成功，應該會顯示 Mosquitto 版本號。

成功的畫面

ai🍓raspberrypi:~ 🍓 mosquitto -v

1727455887: mosquitto version 2.0.11 starting

1727455887: Using default config.

1727455887: Starting in local only mode. Connections will only be possible from clients running on this machine.

1727455887: Create a configuration file which defines a listener to allow remote access.

1727455887: For more details see https://mosquitto.org/documentation/authentication-methods/

1727455887: Opening ipv4 listen socket on port 1883.

1727455887: Opening ipv6 listen socket on port 1883.

1727455887: mosquitto version 2.0.11 running