From: [EMAIL PROTECTED] > CARP comes very close to solving the problem, but it's not specific to > individual tcp ports afaik. So it would help if a box becomes > completely unreachable, but if only the service stops working it's not > that useful. > > Essentially I'm looking for a very simple daemon that can monitor > services on several machines and trigger pfctl when the availablity of > the services changes. > > It's been suggested to me that the Linux-HA/heartbeat package may have > what I'm looking for, but from what I can tell it's never successfully > run on OpenBSD.
CARP is superior to that script-driven unmaintained garbage for the HA functionality. Other functionality can be met by other means... > Any thoughts, suggestions or pointers would be very appreciated. monit comes to mind, although I've never used it but I think you can write event handlers for service states. Also if you're using Nagios for monitoring you can set up event handlers (even something as simple as "ssh to a host and execute this pfctl command to strip a host out of a table" or something.) DS
