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Issue description

Upon executing the command "kinit admin" as instructed in the exercise, learners are receiving the following error message: "kinit: Configuration file does not specify default realm when parsing name admin"

Reproduction Steps:

1. Execute the command "kinit admin" in the specified step.
2. Encounter the error message "kinit: Configuration file does not specify default realm when parsing name admin".

Attached is a screenshot illustrating the error message for reference.

This issue has been replicated successfully from my account waseem_rhls, confirming its occurrence. It is crucial to address this issue promptly to ensure a seamless learning experience for all participants.

Steps to reproduce:

Workaround:

Expected result: