Our goal is to have a Healthcheck continuously evaluate the health of an endpoint. When it becomes unhealthy, we want the DNS to failover to a different IP address. We have set this up but we now realized that it actually doesn't work (i.e. when the Healthcheck goes red, no failover happens). Here is our current configuration:
A Record
- Record name: www.mydomain.com
- Record type: A
- TTL: 30 seconds
- Routing policy: Failover
- Failover record type: Primary
- Healthcheck: www
- Record ID: www-1
- Value:
A Record
- Record name: www.mydomain.com
- Record type: A
- TTL: 30 seconds
- Routing policy: Failover
- Failover record type: Secondary
- Healthcheck: www
- Record ID: www-1
- Value:
In addition, we have a health check.
OK - so we recently had an issue, where the healthcheck turned red. We got notified via SNS as expected. However, when doing an NSLookup of www.mydomain.com it was still returning the value for the Primary. We fixed the issue within less than 5 minutes.
Given the TTL and so on configured above, shouldn't we have seen the NSLookup update to show the Secondary? Is it possible it would take longer to failover? If so, why?
Is there an error of some kind in the configuration above? If so any guidance would be greatly appreciated.