Problem:
The upgrade documentation for 2.4 is missing the actual upgrade steps. It includes all of the option pre-upgrade steps, but the actual upgrade steps are missing.
We are building out docs.theforeman.org from a base of documentation that was once Red Hat Satellite and orcharhino by atix.de documentation. While the doc set is robust and has a lot of useful information, the primary scenarios covered have Katello included by default, as is the case for the enterprise solutions the docs came from. The Foreman without Katello installation and upgrade docs are not yet ready at that address, but work is ongoing.