Learn › BMC & Server Management
Chapter 9 on a real Ubuntu 24.04 workstation with a real IPMI 2.0 controller: a watchdog is a countdown the host has to reload, and the controller acts on the silence when the reloads stop. Read a timer that was never set, collect the refusal that gets, name the five stages and the four timeout actions, arm one with a raw command because ipmitool cannot, prove that setting a timer does not start it, watch a real expiry latch its flag and write its own record, let one power the host down, clear the latch, and write the documentation an operator needs before arming a watchdog in production.