After updating my Home Assistant setup from version 2022.7.2 to 2022.8.6, I encountered a problem where the MQTT broker addon stopped accepting connections. The error logs indicated ‘invalid credentials,’ suggesting an issue with user authentication. Here’s how I resolved the issue:
-
Review Release Notes: I checked the release notes for openHAB 2022.8 to identify any changes related to MQTT. It appeared that the MQTT addon configuration had been updated, affecting user authentication.
-
Reset MQTT Users: I recreated the MQTT users in the addon configuration, ensuring the credentials matched those used by my clients. This involved navigating to the MQTT addon settings and updating the user details.
-
Verify Configuration: I reviewed the MQTT addon settings to confirm that the ports (1883 for non-TLS and 8883 for TLS) were correctly configured and accessible. I also ensured that the authentication settings were properly set up.
-
Test Network Connectivity: Using tools like telnet and netcat, I tested connectivity to the MQTT broker on the specified ports. This helped me rule out network-related issues such as blocked ports or firewall restrictions.
-
Check for Known Issues: I searched the Home Assistant community forums and GitHub issues to see if others were experiencing similar problems. I found a few reports of MQTT issues post-update, which provided additional troubleshooting steps and potential fixes.
-
Reinstall MQTT Addon: As a last resort, I uninstalled and reinstalled the MQTT addon, then reapplied my configuration settings. This process ensured that any corrupted files were replaced, and the addon was running correctly.
By systematically addressing each potential issue, I was able to restore MQTT functionality in my updated Home Assistant setup. The key takeaway was ensuring that user credentials and configuration settings were correctly aligned with the new version’s requirements.