How to break the core user password of a single node in Red Hat Enterprise Linux CoreOS

Solution Verified - Updated -

Issue

  • How do I reset a forgotten root password of an OpenShift node

  • If I forget the root password in RHCOS, how can I reset it?

  • How to reset a forgotten root password from the console in RHCOS?

  • How to break to the ramfs console using the rd.break argument?

Environment

  • Red Hat OpenShift Container Platform (OCP)
    • 4.x
  • Red Hat Enterprise Linux CoreOS (RHCOS)

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