With the introduction of a dedicated service for running the web application backed by Puma, the support for Passenger can be dropped within our code, selinux, installer and packaging.

A list of issues than be closed when it is dropped:

https://projects.theforeman.org/projects/foreman/issues?utf8=%E2%9C%93&set_filter=1&sort=id%3Adesc&f%5B%5D=status_id&op%5Bstatus_id%5D=o&f%5B%5D=subject&op%5Bsubject%5D=%7E&v%5Bsubject%5D%5B%5D=passenger&f%5B%5D=&c%5B%5D=tracker&c%5B%5D=status&c%5B%5D=priority&c%5B%5D=subject&c%5B%5D=author&c%5B%5D=assigned_to&c%5B%5D=updated_on&c%5B%5D=category&c%5B%5D=fixed_version&group_by=