Hi all, I’ve got a cheap Celeron box running OPNSense and it’s been pretty good so far, but I found twice that the device turned off at some point while I was at work, and I have been unable to figure out what’s causing it.
The only change was that I enabled Monit to see if I could figure out what was causing crowdsec to stop sometimes but never ended up configuring anything. I’ve only been running it for a couple months though, so it’s possible that that is not related.
I know that on a Mac (based on freebsd, right?) you can determine whether the shutdown reason was a hard shutdown, regular shutdown, or the power cable being unplugged. Is it possible to do that with OPNSense? I’d like to narrow it down to software or hardware ideally.
I would ssh into the opnsense box and press 8 to run the shell terminal and then run dmesg and go back to the time the server rebooted, there you can see the events leading up to the shutdown.
Dmesg doesn’t go back very far, does it? I only see the current boot and the one before that, which was a normal shutdown.
I believe I was able to see the last logs before the system turned off last time, and the last messages were syncing discs and all buffers synced, which I would have expected to be part of a normal shutdown.
If it happens again I’ll be sure to get the logs before the crash or shut down and save it to a file.