Hi %{reply_to_username,fallback:there},
Jenkins 2.332.1 switched Jenkins from using System V init to use systemd with its Linux package installers for Debian, Ubuntu, Red Hat, Alma, openSUSE, Rocky, and more. The LTS Upgrade Guide describes that transition and how to adapt your environment to the transition.
https://www.jenkins.io/doc/upgrade-guide/2.332/#upgrading-to-jenkins-lts-2-332-1
There is a blog post about it as well at
https://www.jenkins.io/blog/2022/03/25/systemd-migration/
There is also a video introduction for RPM based distributions like Red Hat Enterprise Linux, Alma Linux, Rocky Linux, Oracle Linux, and Amazon Linux.
https://www.youtube.com/watch?v=MkokjTQ2ngc
There is also a video introduction for deb based distributions like Debian and Ubuntu