How to re-register cloned System on Red Hat Network Portal?

SOLUTION VERIFIED – Updated

Environment

  • Red Hat Enterprise Linux v 6.3
  • RHN Classsic (Red Hat Network Classic)
  • Certificate Based Registration (Red Hat Subscription Management)

Issue

  • How to re-register cloned System on Red Hat Network Portal?

Resolution

If cloned system is registered using RHN classic, then following steps should apply:

  • Remove existing systemid file by running following command:
# rm -fr /etc/sysconfig/rhn/systemid
  • Register system by running following command:
# rhn_register

or 

# rhnreg_ks --username=<RHN username> --password=<RHN password>

If Cloned system registered using Subscription Management method, then following steps should apply:

  • Change hostname and other network information on cloned VM.
  • Run following commands in order to remove all of the subscription and identity data from the local system:
# subscription-manager clean 
  • Register system by running following command:
# subscription-manager register --username=<RHN username> --password=<RHN password> --autosubscribe

Root Cause

  • Cloned system contains old registration information due to cloning and causing issues with updates.

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