Currently the MongoDB Kubernetes Operator allows specification of annotations on services created by the operator, but only annotations with the same value across all services. The external-dns operator can create DNS names based on annotations on services. In order to support external-dns integration the MongoDB Kubernetes Operator would need to allow one to specify specific annotations for each generated service. Current spec for external access services: externalAccess: externalService: annotations: # Same annotations will be applied on all services You could consider a placeholder/substitution scheme like: externalAccess: externalService: annotations: external-dns.alpha.kubernetes.io/hostname: mydb-db-.mydns.com Or some other way of assigning a per-service annotation that can be used by other operators such as external-dns.