Regarding the S3 gateway domain. If your domain is

<http://example.io|example.io>

. You should have the following domains pointing at your installation:

<http://lakefs.example.io|lakefs.example.io>

,

<http://s3.lakefs.example.io|s3.lakefs.example.io>

and

*.<http://lakefs.s3.example.io|lakefs.s3.example.io>

. So in your DNS provider, create CNAME records from these domains to your ingress load balancer. And yes - you will have to add them to your ingress, so it that it will know to forward the requests to the lakeFS service in Kubernetes.