Watchdog for dhcpd

David W. Hankins David_Hankins at
Tue Sep 5 15:08:30 UTC 2006

On Tue, Sep 05, 2006 at 10:35:15AM -0300, Marcos Iuato wrote:
> Does anyone knows a watchdog to indicate for this purpose?

In my sysadmin days I never liked watchdogs.  I preferred this
sort of model of "service keepalives":


	(while true ; do
		dhcpd -f >/dev/null 2>&1
		msg="DHCP exited with status $? on `hostname`"
		logger -p daemon.crit $msg
		echo $msg | Mail -s 'Service failure' sysadmins at
		# Very important - if the config file is bogus or some
		# other pesistently bad condition, do not fast.
		sleep 5
	done) &

Note that this may be equivalent to having your INIT process manage
the daemon (it may have facilities to do precisely this kind of
thing, and using that instead of the above is at least one less
process on the system).

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