I had to deal with a couple of others things which is why I wasn’t able to try the upgrade again. Last Friday I have tried again but ran immediately into Katello 4.3 - Repo Sync Error - Errno1 Operation Not Permitted and PulpRpmClient::ApiError HTTP 500 during sync repository.
As I wasn’t sure how much time I have this week to deal with these and the sync error affected CentOS 7 Base on my system, I have reverted back to 4.2 as there everything is working at the moment, except for that one repository which is only used on a single host, but that I can live with…