Gokan Atmaca wrote:
> I want to do dns failover. There is no such feature in the bind
> service. It has RR feature but no Failover. I have 2 services. I want
> the A record to change automatically when one is inaccessible. Is
> there a tool you can recommend for this ?
The most obvious way to do this is dynamic DNS updates. Set up your
servers to send a dynamic DNS update to your DNS server when they decide
that they are the new primary.
Note that DNS TTL records are advisory, not mandatory, so it is
unlikely that all your traffic will switch over quickly to the
new primary. Losing connectivity for 3 minutes to 24 hours is
for various clients is more or less expected.
-dsr-