Custom endpoint not redirecting to domain endpoint in opensearch

Question

I have created a custom endpoint along with DNS hostname and certificate. The old default domain is working(when I ping) but not the custom endpoint. I tried creating a CNAME but it says `[RRSet of type CNAME with DNS name vipanchi.aos-cluster-hc.pdx.alpha.entity-extractor.ember.aws.dev. is not permitted at apex in zone vipanchi.aos-cluster-hc.pdx.alpha.entity-extractor.ember.aws.dev.]`
There is no load balancer being used for my Opensearch. Is there any other way I can redirect the traffic to the custom endpoint? For ARecord, I can only see that we require a load balancer.

Answer

Reading the error (and [checking premium support page](https://aws.amazon.com/premiumsupport/knowledge-center/troubleshoot-route53-resource-record/)), it appears you're trying to use a CNAME at zone apex?  Can't do that in R53, it requires an A record instead.

CNAME allows you to alias to another record in the hosted zone, A record allows you to point to a lot of things (including but not limited to IP4 addresses, and Alias to a VPC endpoint).

Custom endpoint not redirecting to domain endpoint in opensearch

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