Subscription-manager registration fails after upgrading system from RHEL 7 to RHEL 8.

Solution Verified - Updated -

Issue

  • Registering system using subscription-manager after upgrade from RHEL 7 to RHEL 8 fails with following error:-
# subscription-manager register --auto-attach
Registering to: subscription.rhsm.redhat.com:443/subscription
Username: xxxxx
Password: xxxxx
'dict' object has no attribute 'has_key'

Environment

  • Red Hat Enterprise Linux Server 8
  • Red Hat Subscription Management (RHSM)

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