The problem I am having problems connecting Home Assistant (HA) to public MQTT. (also see HA issue 119064 and HA issue 39581 , what did not solve my problem). In my case also connecting Home Assistant to mqtt.flespi.io. I have set up a token with ACL in Flespi, but I keep getting an authorization error in HA: 2024-06-07 14:38:07.523 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection opened 39 2024-06-07 14:38:07.523 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: Starting client misc loop 2024-06-07 14:38:07.524 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: register write 39 2024-06-07 14:38:07.528 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: unregister write 39 2024-06-07 14:38:07.549 ERROR (MainThread) [homeassistant.components.mqtt.client] Unable to connect to the MQTT broker: Connection Refused: not authorised. 2024-06-07 14:38:07.549 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection closed 39 if("undefined"!==typeof hljs)hljs._ha();else if("undefined"===typeof hljsLoading){hljsLoading=1;var a=document.getElementsByTagName("head")[0],e=document.createElement("link");e.type="text/css";e.rel="stylesheet";e.href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.7.0/styles/default.min.css";a.appendChild(e);e=document.createElement("script");e.type="text/javascript";e.onload=function(){var d={},f=0;hljs._hb=function(b){b.removeAttribute("data-hljs");var c=b.innerHTML;c in d?b.innerHTML=d[c]:(7 What version of Home Assistant Core has the issue? 2024.6.0 What was the last working version of Home Assistant Core? never got it working... What type of installation are you running? HA on Docker on Linux Integration causing the issue mqtt Link to integration documentation on our website https://www.home-assistant.io/integrations/mqtt Diagnostics information Troubleshooting I already did: Tried deleting the token in Flespi and creating a new. Tried different ACL's found a similar issue at Openhab , and tried the same. This taught me to investigate if MQTT might not work with 64-byte tokens. So I tried to set up a shorter token in Flespi. Unfort. that is not possible. Only 64-byte tokens are allowed. do not use birth message (Configurations -> Integrations -> MQTT -> Configure -> Re-Configure MQTT -> Submit -> Untick "Enable birth message" -> Submit), as per suggestion here Tried MQTT protocol v5, but that gave me an "unknown reason" error: 2024-06-07 14:37:54.572 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection opened 27 2024-06-07 14:37:54.573 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: Starting client misc loop 2024-06-07 14:37:54.573 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: register write 27 2024-06-07 14:37:54.575 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: unregister write 27 2024-06-07 14:37:54.599 ERROR (MainThread) [homeassistant.components.mqtt.client] Unable to connect to the MQTT broker: Connection Refused: unknown reason. 2024-06-07 14:37:54.599 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection closed 27 if("undefined"!==typeof hljs)hljs._ha();else if("undefined"===typeof hljsLoading){hljsLoading=1;var a=document.getElementsByTagName("head")[0],e=document.createElement("link");e.type="text/css";e.rel="stylesheet";e.href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.7.0/styles/default.min.css";a.appendChild(e);e=document.createElement("script");e.type="text/javascript";e.onload=function(){var d={},f=0;hljs._hb=function(b){b.removeAttribute("data-hljs");var c=b.innerHTML;c in d?b.innerHTML=d[c]:(7 Additional information MQTT Token in Flespi: { "ips": "", "enabled": true, "expire": 0, "ttl": 31536000, "info": "Home Assistant", "access": { "acl": [ { "ids": "all", "methods": [ "GET" ], "uri": "gw/devices" } ], "type": 2 }, "metadata": {} } if("undefined"!==typeof hljs)hljs._ha();else if("undefined"===typeof hljsLoading){hljsLoading=1;var a=document.getElementsByTagName("head")[0],e=document.createElement("link");e.type="text/css";e.rel="stylesheet";e.href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.7.0/styles/default.min.css";a.appendChild(e);e=document.createElement("script");e.type="text/javascript";e.onload=function(){var d={},f=0;hljs._hb=function(b){b.removeAttribute("data-hljs");var c=b.innerHTML;c in d?b.innerHTML=d[c]:(7

Home Assistant // Unable to connect to the MQTT broker

Verguldebarman

The problem

I am having problems connecting Home Assistant (HA) to public MQTT.

(also see HA issue 119064 and HA issue 39581, what did not solve my problem).

In my case also connecting Home Assistant to mqtt.flespi.io. I have set up a token with ACL in Flespi, but I keep getting an authorization error in HA:

2024-06-07 14:38:07.523 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection opened 39
2024-06-07 14:38:07.523 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: Starting client misc loop
2024-06-07 14:38:07.524 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: register write 39
2024-06-07 14:38:07.528 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: unregister write 39
2024-06-07 14:38:07.549 ERROR (MainThread) [homeassistant.components.mqtt.client] Unable to connect to the MQTT broker: Connection Refused: not authorised.
2024-06-07 14:38:07.549 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection closed 39

What version of Home Assistant Core has the issue?

2024.6.0

What was the last working version of Home Assistant Core?

never got it working...

What type of installation are you running?

HA on Docker on Linux

Integration causing the issue

mqtt

Link to integration documentation on our website

https://www.home-assistant.io/integrations/mqtt

Diagnostics information

Troubleshooting I already did:

Tried deleting the token in Flespi and creating a new. Tried different ACL's
found a similar issue at Openhab, and tried the same. This taught me to investigate if MQTT might not work with 64-byte tokens. So I tried to set up a shorter token in Flespi. Unfort. that is not possible. Only 64-byte tokens are allowed.
do not use birth message (Configurations -> Integrations -> MQTT -> Configure -> Re-Configure MQTT -> Submit -> Untick "Enable birth message" -> Submit), as per suggestion here
Tried MQTT protocol v5, but that gave me an "unknown reason" error:
```
2024-06-07 14:37:54.572 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection opened 27
2024-06-07 14:37:54.573 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: Starting client misc loop
2024-06-07 14:37:54.573 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: register write 27
2024-06-07 14:37:54.575 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: unregister write 27
2024-06-07 14:37:54.599 ERROR (MainThread) [homeassistant.components.mqtt.client] Unable to connect to the MQTT broker: Connection Refused: unknown reason.
2024-06-07 14:37:54.599 DEBUG (MainThread) [homeassistant.components.mqtt.client] mqtt.flespi.io: connection closed 27
```

Additional information

MQTT Token in Flespi:

{
  "ips": "",
  "enabled": true,
  "expire": 0,
  "ttl": 31536000,
  "info": "Home Assistant",
  "access": {
    "acl": [
      {
        "ids": "all",
        "methods": [
          "GET"
        ],
        "uri": "gw/devices"
      }
    ],
    "type": 2
  },
  "metadata": {}
}

Verguldebarman

Link to the related Home Assistant community post:

https://community.home-assistant.io/t/flespi-unable-to-connect-to-the-mqtt-broker-connection-refused-not-authorised/737031

Verguldebarman

Got an answer from Flespi dev:

If you want to forward device data from flespi to HA, the best solution is to locally set up mosquitto and configure an MQTT bridge in it. This way, if the internet goes out at home, HA will remain fully functional. And messages from the flespi device will arrive in HA through the MQTT bridge.

Next challenge, as I don’t have HA OS running, but HA in docker. So the mosquitto add-on is not available to me... So I need to setup mosquito in a docker:

https://www.homeautomationguy.io/blog/docker-tips/configuring-the-mosquitto-mqtt-docker-container-for-use-with-home-assistant

Verguldebarman

You can find information on configuring the bridge here:
https://forum.flespi.com/d/188-configure-your-mosquitto-mqtt-bridge-to-send-data-to-flespi
https://forum.flespi.com/d/1767-mqtt-bridge-with-mosquitto

You will only need to tweak the configuration a bit to ensure the necessary topics are transmitted in the desired direction.