How can we set a password single user mode for OCP nodes

all the time

Sorry, this is not a bug, but more of a question how we can set a password to access single user mode from a console.  I was unable to find a category for question.

1. From the console/idrac/bmc, Boot or reboot a server
2. When we see the grub menu for Redhat, we type 'e'
3. On the line that begins with Linux, we append the word 'single' at the end of the line.
4. ctrl-x

able to access the node without having to enter a password

a password prompt