I am having trouble setting up custom endpoint for AWS Elasticsearch. What entry do i need to put in route 53 after enabling custom endpoint in elasticsearch?
You need to set up a Cname Record in R53 with the custom name and point it towards the autogenerated ES endpoint, don’t forget that you need to create a SSL certificate for the custom adress 
See docs: https://docs.aws.amazon.com/opensearch-service/latest/developerguide/customendpoint.html
