Starting about 3 days ago, without any configuration changes from me, home assistant “stopped graphing things” after 4am. Rebooting fixes it until 4am the following day, i have no idea why this has begun, and as of this morning ive created an automation that just reboots home assistant at 4:01am until i can figure out whatever is causing this issue.
its not a load thing, its not a storage space thing, i dont have any automated jobs doing anything at 4am, and it started after the most recent two home assistant updates (the 4th and 5th, i think).
Interestingly, all the sensors that generate the numbers for all the charts (literally all the sensors in HA) still report the current value. So looking at a dashboard without any graphs you wouldnt have any idea that theres something wrong - but for some reason at 4am every morning HA just ‘stops writing to its own history’. You can see live data, but from 4am onward, no historical data. its super bizarre.
This has happened to me as well. Exactly at 4:00 AM each day! I thought the latest 2024.8 release may help fix it but still seeing the issue today after updating yesterday.
One note I called out, is that I have a non-standard time set for the recorder retention of 365 days. Not sure if that could still be causing an issue.
oh good, so im not crazy and i didnt do anything wrong - it was a real actual bug. I had created a simple automation to restart HA at 4:01am every morning and i just left that for a few weeks, then tried turning it off to see what happened and ‘the problem went away’.