can the hardware watchdog reboot a hung kernel?

[Eugene Grosbein]

14.11.2019 21:52, Daniel Braniss wrote:

> hi,
> I have serveral hundred Nano-pi NEO running, and sometimes they hang, since there is no console
> available, the only solution is to do a power cycle - not so easy since they are distributed in three buildings :-)
> 
> I am looking at the watchdog stuff, but it seems that what I want is not supported, i.e.
> 	reboot the kernel when hung 
> 
> wishful thinking?

It's possible if the hardware has such a watchdog and kernel subsystem watchdog(4) supports it.
rc.conf(5) manual page describes watchdogd_enable option.