Failure detection to change A records

Erik Freitag erik.freitag at
Wed Jan 12 19:43:43 UTC 2005

> Hi,
> I played with round-robin and this is working fine. But this does
> fit with our need of failure detection.
> I'm looking for a way to test some services availaibility of some
> hosts, to enable or disable A records.
> For example, I set up two ldap servers in our network.
> On our DNS I run some knid of ldap watchdog, and when a ldap server
> fails, the watchdog removes the A record for
> What is possible with bind ?

What you suggest is possible. Just write a script that uses nsupdate to
add or delete your A records as needed.

> -- 
> Nicolas Ecarnot

Erik Freitag
(925) 487-6890 (mobile)
erik.freitag at

More information about the bind-users mailing list