Red Hat / CentOS: How to list RPMs installed on year X

Paranoid-minded auditor: “I need a list of all RPMs that were installed this year on these servers, stat!”

You: “OK, let’s see here…”

On a single machine:

for i in `rpm -qa`; do rpm -qi $i | grep Install | grep -q 2017 && echo $i; done

If you need to check several servers, you can use a bash “for” cycle, or pssh, or…