How to set the hostname in Red Hat Enterprise Linux 7, 8, 9

Solution Verified - Updated -

Issue

  • I can not set the hostname of the system persistently
  • How do I set the hostname in Red Hat Enterprise Linux 7, 8, 9
  • How to change the hostname in Red Hat Enterprise Linux 7, 8, 9

Environment

  • Red Hat Enterprise Linux 7, 8, 9

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