Bringing this back from the dead.
So things have been stable for months. My server would go months at a time without crashing. If for whatever reason I restarted the machine, it might crash and reboot one or two times, but as long as I left it alone, it would become stable and work fine for months.
I have been experimenting with some jails, and while I was playing around with settings I noticed that I still had set
kern.corefile
to
/var/coredumps/%U/%N.core
as sysctl in the web-GUI at
System ➞ Tunables.
I remember having set this back on July 18th, 2020, at the recommendation of
@Samuel Tai. Not thinking I needed it anymore, I unchecked "Enable" (so that I wouldn't delete it). I intentionally restarted. And now, the system is rebooting over and over without stabilizing.
Isn't that weird? Does that tell me/us anything interesting? Might it help in solving the situation permanently?