Change DNS records automatically when a link is DOWN

[Blason R]

I guess you need to DNS Sub-domain delegation.

On Wed, Jun 5, 2019 at 8:51 PM Kevin Darcy <kevin.darcy at fcagroup.com> wrote:

> Publish all 3 NSes.
>
> Publish MX records with primary/failover preferencing.
>
> Use a load-balancer (free or commercial, software/hardware/cloud-based) to
> direct the web traffic.
>
>                                                                  - Kevin
>
> On Wed, Jun 5, 2019 at 11:16 AM Roberto Carna <robertocarna36 at gmail.com>
> wrote:
>
>> Dear people, I have two sites:
>>
>> - Main site with an Internet link and two BIND services (DNS1 y DNS2) and
>> a /28 block, and web and mail services supported
>> - Backup site with a second Internet link and a BIND service (DNS3) and
>> another /28 block
>>
>> When the Internet link from main site is DOWN, the web and mail traffic
>> come through the backup site to main site crossing a L2L. So I need to
>> change the IP's of the FQDN hosts I have supported in the DNS3 in order to
>> continue offering services (web and mail). How can I do this automatically?
>> Is there any way that "something" monitors the main Internet link and in
>> case it is DOWN automatically order to modify the FQDN records in DNS3 ???
>>
>> Thanks a lot and regards!!!
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