How to disable root access or root login on a RHEL system ?

Solution In Progress - Updated -

Issue

  • Is having a root password defined necessary? In otherwords, If I define a group of people (RedHat system administrators) with the ability to sudo su - to root, Do I need to have a root password defined at all in production?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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