The word about Kubernetes awesomeness is spreading in your company. People are becoming curious and would like to try it out. Since you are the Kubernetes guru, it came as no surprise that you received a call from John Doe. He wants to "play" with Kubernetes, but he does not have time to set up his own cluster. Since he knows that you already have a cluster up and running, he'd appreciate if you would let him use yours.
Since you have no intention giving John your certificates, you decide to let him authenticate with his user.
You will have to create certificates for him, so the first step you'll need to do is to verify that OpenSSL is installed on your laptop.
openssl version
It shouldn't matter which version of OpenSSL is installed. We output the version only to verify that the software is working. If the output is something like command...