System crash (or reboot) how to find the root cause?

[i5Js]

Hi guys, 

 

I've a nanopim4 V2 running Armbian Focal with Linux 5.7.15-rockchip64, on a Kubernetes k3s cluster, and I realise that time to time, the board crashes (or reboot) but I'm unable to find why. I've checked syslog kernel.log under /var/log.hdd without luck. What else should I check? This is the output of armbianmonitor if it's help. http://ix.io/2vgU

 

Many thanks in advanced.

 

Regards

[Tido]

Read the log via UART with another SBC, this way you can catch the last lines before it reboots.

Or you change the settings so that Armbian writes everylog right away to the SDcard

[i5Js]

13 hours ago, Tido said:

Read the log via UART with another SBC, this way you can catch the last lines before it reboots.

Or you change the settings so that Armbian writes everylog right away to the SDcard

Thanks for your reply, I'll try to write the logs to SD