OpenHabian goes unresponsive in the middle of the night

The last two nights, OpenHabian just gives up and dies. The OpenHAB stops, the logs abruptly end with no error, and I can’t even SSH into the Raspberry Pi. I can ping the Pi, but that’s about all I can do. Only thing I can do is power cycle the pi. Unsure where the problem beings and ends. Its an Rasberry Pi 4, OpenHabian, the latest openhab, InfluxDB, and Grafana.

Where should I begin?

Looking through some other log files, it appears the OS restarted itself for reasons unknown at 0434 local time. Everything is normal, then the next log entries in every file are boot entries. Almost seems like power dropped out to the Pi. I have seen occasions where upon booting or rebooting, it crashes and needs to be power cycled. So I’m thinking maybe it lost power and died during the reboot.

Now, how it lost power is another question since it is on a gigantic UPS and there were no faults overnight.

Could be the power supply is faulty or SD card is corrupt. If you have an extra SD card or power supply give it a try.

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How did you get your hands on that?

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lol oops. It’s a 3B+