How to change the Jenkins RPM repository?

Our current installation was done via RPM. How do I change the repository to / from CJE / OSS

Assuming you followed the docs for Installing on Red Hat, CentOS, or Fedora, you should have:

If not, then you need to find the repository declaration under /etc/yum.repos* that contains either:

for CJE,

or for OSS, either:

or

You need to remove this repository declaration.

Example (assuming you followed the docs):

and now clean up yum.