As an ops person, you need a GPG key associated with your @redhat.com email address and distributed to a public keyserver such as pgp.mit.edu.
More information on specific steps can currently be found starting here, or via a web search: https://www.gnupg.org/gph/en/manual/c14.html
If you are creating a new GPG key, make sure it's 4096 bits long. If you're sure you want to re-use an existing key, you may do so. 4096 bits is preferred,