Stop Frequent AlmaLinux Reboots by Disabling the NMI Watchdog
Tracing unexpected reboots back to the kernel watchdog on AlmaLinux
To begin with, I decided to look at the logs from just before the previous boot, so that I could tell whether this was really a reboot coming from the OS or a problem around the hardware power supply.
On AlmaLinux (RHEL based), running journalctl -b -1 shows the logs of the one previous boot all together, so I used that command as a starting point and went over the kernel messages and the systemd logs.
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