Linux Host randomly crashing

[felix920506]

I recently setup a server running Jellyfin and a Caddy reverse proxy on Ubuntu Server 23.04. There is no other software running on this machine outside of system services.
However I noticed that this system would randomly crash about once a day.
Specs are as follows:

• Intel Core i5-9400F
• ASUS B360-F
• DDR4 8GB Single Stick 2400mt/s
• 2x WD Green 120GB SSD (Media is mounted to this host via a SMB share)
• Intel Arc A750 GPU
• FSP Hexa 85+ 350w PSU

What might be the problem and how do I troubleshoot this thing?

 

UPDATE:
I ran Memtest86+ on it and it passed

Edited June 2, 2023 by felix920506
Status Update

[Eigenvektor]

46 minutes ago, felix920506 said:

What might be the problem and how do I troubleshoot this thing?

Could be anything at this point. First step would be to look at system log files, see if there's anything suspicious in there.

 

Also, what do you mean by crash exactly? Does it hard shut down, does it become unresponsive, is it only unrechable over the network?

[felix920506]

14 minutes ago, Eigenvektor said:

Does it hard shut down, does it become unresponsive, is it only unrechable over the network?

It becomes unresponsive but doesn't hard shut down.

[Eigenvektor]

14 hours ago, felix920506 said:

It becomes unresponsive but doesn't hard shut down.

As I said, have a look at log files (/var/log/*). Other than that, I'd have a look at memory usage when it becomes unresponsive, might be starting to swap.