Hi,
we are running production environment in region Amsterdam (AMS), where I implemented DNS which is working as desired. All servers can reach eachother based on hostname. Wheneven something is added or deleted with Terraform is also updates DNS. So far, so good.
But we are now in the process of building a disaster recovery environment in Frankfurt (FRA). Network connectivy is working fine, first database is running there with GoldenGate to keep it in sync.
But how to enable AMS & FRA to use each others DNS entries? Obviously, they both have there own VCN with own routing tables etc.
My goal would be to have dns running on both side, and being aware of what happens on the "other side". If AMS is going down, we still need to be able to use DNS in FRA, and the other way around. Something like slave dns-server?
Thanks a lot for any indication in the right direction!
Kind regards,
Jeroen