External service as an alias - recursors

[Nils Otto Johansen]

Hello.

We use Consul for service descovery in our docker environment.

All new docker containers (which exposes a port) is discovered by gilderlabs/registrator, and registered in Consul as a service.

Now, I would like to implement some kind of an alias-system for discovering services on a more permanent name.

This name is not known at startup, and will e.g be used for our A/B-deployment workflow.

I have tested the external service by registering services in the catalog.

As long as I am not having any recursor dns-servers set, the DNS interface returns only the CNAME record.

This is understandable for external services, but my usecase is an alias for a internal service.

Shouldn't consul recurse locally for external services?

I can of course configure local dns server as a recursor, but it doesn't feel right.

regards

Nils Otto Johansen

[Armon Dadgar]

Hey Nils,

Could you please file a ticket against Consul for this? The issue is that Consul does not

ever expect the CNAME to be a valid Consul record, so we don’t handle this case. e.g. We don’t

parse it to check if it could potentially be resolved by the same server.

Thanks!

Best Regards,

Armon Dadgar

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[Nils Otto Johansen]

Thank you!

I have created the ticket, including examples: 

 https://github.com/hashicorp/consul/issues/1228