Sudden crash, how to investigate?

[dialbat]

Hello World!
I have latest Proxmox running on Minisforum MS-01, with 96Gb of memory, 1 boot SSD and 2 SSDs for zfs.
Yesterday server became inaccessible. This is a screen of system log.

Doesn't show anything unusual before it became frozen. I discovered it late in the evening. Logged in using MeshCommander on management port. It showed regular login, but i couldn't type anything. I have reset the server.
Please suggested, where should i dig for errors loggs.
Thank you

 

[sierra_mike]

Too many variables to help, I would start with searching the forum. Here is one thread to start with while you gather more data.

https://forum.proxmox.com/threads/x86-split-lock-detection.111544/

 

[esi_y]

Please suggested, where should i dig for errors loggs.

You should better check the entire log of the shutdown, it looks like shutdown was triggered, actually, not a sudden crash.

You can have a look at e.g. here: https://forum.proxmox.com/threads/random-reboots-what-to-try-next.154574/

Regarding how to check logs. Even if there is something mysterious about the shutdown, first thing I check against is another kernel, the 6.8 was full of mysteries so far (see the linked thread).