One Day of Home Assistant Logs: 775 Errors, Seven Findings

Description and use

The day’s log review led to seven findings, each addressed with targeted configuration changes or disabling of problematic integrations, reducing error count to zero and improving system reliability.

Problem

A production Home Assistant instance accumulated 775 errors and 5,077 warnings in a single day, revealing multiple configuration and integration issues.

Outcome

The day’s log review led to seven findings, each addressed with targeted configuration changes or disabling of problematic integrations, reducing error count to zero and improving system reliability.

Workflow

• Count total log lines, errors, warnings using docker logs and grep
• Group errors/warnings by logger name to identify frequent sources
• Verify system resources and configuration integrity
• Identify and fix camera warning source by reloading camera config and adding condition to automation
• Disable faulty FusionSolar cloud integration and confirm local Modbus data
• Update REST sensor template to handle null values and set availability
• Remove unused KNX group addresses from YAML
• Review unavailable entities and remove only those not referenced by automations
• Add availability condition to garage door template sensor

Evidence

10,490 log lines, 775 ERROR entries, 5,077 WARNING entries

Source

The cameras accounted for most of the warnings. 2,886 were warnings about slow updates from the two Tapo cameras.

Source

The FusionSolar integration polls Huawei's cloud kiosk for daily, monthly and yearly energy. 144 failed polls in 24 hours, one every ten minutes, each followed by three errors about missing energy fields, 576 log entries in total.

Source

123 update errors in the day, 110 of them on the battery charge sensor: the API returned null for a field, the template passed it through, and Home Assistant refused the string None as a value with unit W.

Source

Roughly once an hour the KNX integration logged read timeouts for eleven group addresses, the operating mode state addresses of eleven thermostats.

Source

100 of 570 state objects were unavailable, 38 of them restored from the registry with no live source.

Source

The raw door contact went unavailable for a moment while the KNX integration came up. A template sensor derived the door state from it with the expression not is_state(contact, 'on').

Source