Stop Frequent AlmaLinux Reboots by Disabling the NMI Watchdog

Tracing unexpected reboots back to the kernel watchdog on AlmaLinux

 Posted on December 11, 2025  (Last modified on August 19, 2026)  • Other languages: 日本語

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. [Read More]
Almalinux  RHEL