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Description of problem:

satellite-change-hostname will error out if @scenario_answers['puppet'] is false (https://github.com/theforeman/foreman-packaging/blob/rpm/1.24/packages/katello/katello/hostname-change.rb#L170).  We should skip `delete_puppet_certs` if this is the case.

Note that this isn't currently a supported situation for Satellite, but it should work regardless since it's supported upstream.

Version-Release number of selected component (if applicable):

Satellite 6.7

How reproducible:

Always

Steps to Reproduce:
1. Remove the puppet configuration from satellite-answers.yaml
2. Run satellite-change-hostname
3.

Actual results:

deleting old certs
/usr/share/katello/hostname-change.rb:217:in `delete_puppet_certs': undefined method `[]' for nil:NilClass (NoMethodError)
        from /usr/share/katello/hostname-change.rb:488:in `run'
        from /sbin/satellite-change-hostname:23:in `<main>'

Expected results:

hostname changed successfully

Additional info:

Created redmine issue https://projects.theforeman.org/issues/32725 from this bug

Upstream bug assigned to ekohlvan

Moving this bug to POST for triage into Satellite since the upstream issue https://projects.theforeman.org/issues/32725 has been resolved.

Verified on Satellite 6.10 snap 8

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: Satellite 6.10 Release), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:4702