How to get the primary endpoint of an aws.elasticache.Cluster?

[lyenliang]

I just created a single node redis using aws.elasticache.Cluster().

I'm wondering how to retrieve its primary endpoint so that I can create a route53 record pointing to it.

I've read all of the output variables, but can't find something like primary_endpoint.

Does anyone know how to get the primary endpoint of a single node redis?