Feature #4761
closed
Add an option per alias entry to keep if the DNS server goes away
0%
Description
It would be useful to be able to tick on a per entry basis in aliases whether an entry should remain if the DNS server that serves it goes away.
At present, if we reboot our internal DNS server then the dynamic entries are deleted until the next 5 minute poll.
It would be useful to be able to indicate whether these should persist over a failure (obviously this should honour the resolver settings in the event that the FQDN had an override).
Updated by Chris Buechler about 10 years ago
- Status changed from New to Rejected
It'll hang onto it as long as the TTL is valid. Doing anything other than that would be broken behavior. If your DNS isn't reliable, you need to use longer TTLs, or make your DNS reliable.
Updated by Technical Support Brendata (UK) Ltd about 10 years ago
I've just checked and the TTL is 1 hour, we rebooted the server the other day and it took about 10 minutes to reboot, all the fqdn lookups were deleted and then came back in at the next 5 minute sweep?