how to check if a slave zone is expired

Warren Kumari warren at
Fri May 6 15:47:50 UTC 2011

On May 6, 2011, at 11:16 AM, John Wobus wrote:

> I try to catch zones that are not updating on the slaves
> to which I have access.  I compare the modtime of the zone
> file with the current time and the refresh interval
> for the zone.  Typically I allow a failure or two
> before alerting, e.g. wait 1 refresh + 2 retry intervals.
> If the expire interval is very short, this could
> be too late.

Mind sharing the script? It's one of those things that I keep meaning to write, but never get enough roundtoits...


> Depending upon the expire interval and refresh interval,
> the window in which you can be alerted and troubleshoot
> a problem might be short.  If you're slaving zones
> for another site, you might not have control of that.
> If you find out refreshes aren't happening long before
> the expiration, and if the zone is pretty static (e.g. a single
> address), you don't have to jump very fast to
> address things if the expire interval is weeks.  If folks are
> depending upon records that are dynamic, you want to respond
> pretty quickly.
> John Wobus
> _______________________________________________
> bind-users mailing list
> bind-users at

More information about the bind-users mailing list