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如何修复 HomeAssistant [homeassistant.components.mqtt] Unable to connect to the MQTT broker: Connection Refused: not authorised

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问题：

启动 HomeAssistant 时，例如使用 docker-compose up，你看到此错误消息：

homeassistant_log.txt
homeassistant    | 2021-12-27 19:55:46 WARNING (Recorder) [homeassistant.components.recorder.util] The system could not validate that the sqlite3 database at //config/home-assistant_v2.db was shutdown cleanly
homeassistant    | 2021-12-27 19:55:47 ERROR (Thread-3) [homeassistant.components.mqtt] Unable to connect to the MQTT broker: Connection Refused: not authorised.
homeassistant    | 2021-12-27 19:55:47 WARNING (Thread-3) [homeassistant.components.mqtt] Disconnected from MQTT server 127.0.0.1:1883 (5)

解决方案

你的 configuration.yml 没有为你的 MQTT 服务器设置正确的用户名和/或密码。

如果 MQTT 服务器有正确的用户，这是一个有效的示例部分：

homeassistant_mqtt_config.yaml
mqtt:
  broker: "127.0.0.1"
  username: "homeassistant"
  password: "ep2ooy8di3avohn1Ahm6eegheiResh"

还要检查 MQTT 服务器（如 Mosquitto）是否有正确密码的正确用户。

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