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For this to work, a kernel driver for the aformentioned device needs
to be loaded. The module may be found in:
/lib/modules/`uname -r`/kernel/drivers/watchdog
It can be configured to try and fix things (such as networking)
before triggering a reboot. As 'repair.sh' may be able to do.
See the examples included in /usr/doc/watchdog-*/examples
This package also contains the 'wd_keepalive' program by Marcel Jansen
which "can be run during critical periods when the normal watcdog
shouldn't be run. It will read from the same configuration file;
it will do no checks but will keep writing to the device.
To enable the watchdog: make sure a kernel module gets loaded for it
(at boot) such as the 'softdog' or an actual hardware driver...
If you don't understand what this is all about, maybe watch:
http://www.youtube.com/watch?v=GV_1p3n1fkU
Then add the following to rc.local:
# Start the watchdog timer deamon
if [ -x /etc/rc.d/rc.watchdog ]; then
/etc/rc.d/rc.watchdog start
fi
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