Syslog is filled with messages about MQTT

1

I am running HA (ver 0.92.2) on a Raspberry Pi

I recently reinstalled everything when trying to upgrade to Python 3.6 I screwed everything up. Anyway everything is back and seemingly working.

This afternoon the Pi was unresponsive to HTTP and SSL connections so I force rebooted it. I was trawling through log files to see if I could work out what went wrong when I noticed that my syslog file was absolutely full of this line:

May 13 16:56:25 pi-HomeAssistant-1 hass[367]: 2019-05-13 16:56:25 INFO (Thread-2) [homeassistant.components.mqtt] Successfully reconnected to the MQTT server

It seems that this is occuring every 2 seconds or so. Any ideas?

2

You don’t mention which broker you are using.

If it is the Mosquitto addon do you have an ACL?

Note the warning at the top of this page. https://www.home-assistant.io/addons/mosquitto/

3

I’m using a standalone Mosquitto server running on another Pi, not the addon.

mosquitto version 1.4.14 (build date Mon, 10 Jul 2017 23:48:43 +0100)

4

I’m running two instances of HA on two raspberry Pi’s. One of the Pi is also running Mosquitto.

The syslog of the Pi running Mosquitto shows this every second:

May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: Socket error on client <unknown>, disconnecting.
May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: New connection from 127.0.0.1 on port 1883.
May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: Client home-assistant-1 already connected, closing old connection.
May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: Client home-assistant-1 disconnected.
May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: New client connected from 127.0.0.1 as home-assistant-1 (c1, k60, u'*REDACTED'*).
May 13 06:54:52 raspberrypi mosquitto[434]: 1557694492: New connection from *REDACTED* on port 1883.
5

Duh. Excuse me but I have found my obvious error.

Both my HA were connecting with the same client name thus causing each other to be disconnected and then reconnecting in and endless loop.