Let me start by thanking you in advance for taking a look at my problem and helping me. I am a complete layman when it comes to Unraid, Docker, and Linux as a whole. Everything I have put together has been done by following guides (specifically those by spaceinvaderone and TRaSH Guides) and nearly nothing has been done from my own knowledge. Your time, patience, and help are appreciated.

I get frequent unclean shutdowns on my server. Sometimes it can stay up for about a week, other times it will go down multiple times in a day. I have a UPS connected and the rare times I have a power outage, everything shuts down cleanly. The only time I have been able to really replicate it, has been when running a Minecraft server with binhex-crafty-4 docker container. It would go down every couple hours while playing. However, the unclean shutdowns predate me having a Minecraft server at all so I am assuming it's a victim of the problem and not the cause. Today, after powering on the server, I turned all the docker containers off to see if it can stay up without anything really running on it. In the meantime, I am hoping one of you can identify a solution.

Thank you again for your time and help. I think I have attached everything I need to, but if you require more I can provide it so long as you can explain where. I have mirrored syslog to flash, and have prefixed those files with "Flash-". The others I obtained via Unraid GUI.

pheonix-diagnostics-20250928-2032.zip pheonix-syslog- IP -20250929-0131.zip pheonix-syslog-20250929-0130.zip pheonix-syslog-previous-20250929-0131.zip Flash-pheonix-diagnostics-20250927-0946.zip Flash-pheonix-diagnostics-20250928-2032.zip Flash-syslog Flash-syslog.zip Flash-syslog-20250927-094704.txt Flash-syslog-previous

5 hours ago, K1ngFiasco said:

other times it will go down multiple times in a day

What do you mean exactly? Does the server just power off, hang, reboot, fail to shutdown?

9 hours ago, JorgeB said:

What do you mean exactly? Does the server just power off, hang, reboot, fail to shutdown?

The server is off despite me not asking it to shutdown/reboot. It seems like a crash because it begins a parity check every time I turn it back on. Typically it goes like this:

I wake up, and check to see if the server is on. I turn it on if not. Everything seems to boot up fine and a parity check is automatically started. Then at some point, usually the next morning or evening, I will find the server is off again.

The parity checks are often logged as "completed" so I don't think it's crashing while that is going on. A typical parity check takes ~16 - ~18 hours to complete for me.

If the server is powering off by itself, that is almost always a hardware issue; a bad PSU or overheating CPU would be good places to start.

1 hour ago, JorgeB said:

If the server is powering off by itself, that is almost always a hardware issue; a bad PSU or overheating CPU would be good places to start.

I see. Is there an easy method to determine which of those two are the culprit, such as some kind of logging of temps or load?

CPU temps should be accessible with the system temps plugin; for the PSU you would need to test with a different one.

Ran Memtest86+ until a pass, and installed the plugins to monitor temps. Never saw the CPU get above 85c, usually sat between 60c to mid-70c depending on load, and still had a crash.

Swapped out the PSU and it's been up for nearly 4 days straight at this point.

Thank you again for your help. I had a bad feeling it was the PSU but wanted to be sure, and the advice here gave me enough information to narrow things down.

Edited October 5, 2025Oct 5 by K1ngFiasco