To do this, on your local machine, run the command:
ssh-keygen -t rsa
and follow the instructions to generate your new SSH key pair. If providing a passphrase to secure your key, make sure you remember it since you will not be able to access your key without this passphrase. Please note that this passphrase is tied to the SSH key pair specifically and is NOT tied to the engaging cluster. This passphrase is solely to secure your private SSH key file.
On Linux systems this will place the key here when using the defaults at the prompts:
/home/[user]/.ssh/id_rsa.pub
You can then login to one of the Engaging head-nodes using your MIT Kerberos credentials. Once on a head-node, append the contents of the new public key on your local machine to the directory /home/[username]/.ssh/authorized_keys on the cluster.
DO NOT REMOVE ANYTHING ALREADY IN THE authorized_keys FILE