The S3 API is regarded by the industry as the de-facto object storage standard API. Red Hat's openstack Swift already supports the S3 API by using the Swift3 middleware[1]. But that middleware needs to be manually configured after deployment. This RFE is to enable the Swift3 middleware by default on a overcloud deployment. This is not necessary for the undercloud.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2019:0045