Document URL: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.12/html-single/upgrading_and_updating_red_hat_satellite/index#updating_disconnected_satellite_server

Section Number and Name: 7.Enter the reposync command:

1. reposync --delete --download-metadata -p ~/Satellite-repos -n \
   -r rhel-8-for-x86_64-baseos-rpms \
   -r rhel-8-for-x86_64-appstream-rpms \
   -r satellite-6.12-for-rhel-8-x86_64-rpms \
   -r satellite-maintenance-6.12-for-rhel-8-x86_64-rpms

Describe the issue: Seems like the reposync command have different option on RHEL 7 and 8 OS. For example:

RHEL7: # reposync --help
~~~
-r REPOID, --repoid=REPOID
specify repo ids to query, can be specified multiple times (default is all enabled)
~~~~

RHEL8: # reposync --help

~~~~
--repo [repo], --repoid [repo]
enable just specific repositories by an id or a glob, can be specified multiple times
~~~~

Suggestions for improvement: need to correct to:

1. reposync --delete --download-metadata -p ~/Satellite-repos -n \
   --repoid rhel-8-for-x86_64-baseos-rpms \
   --repoid rhel-8-for-x86_64-appstream-rpms \
   --repoid satellite-6.12-for-rhel-8-x86_64-rpms \
   --repoid satellite-maintenance-6.12-for-rhel-8-x86_64-rpms

Additional information: Also we can correct this in Satellite 6.11 doc for RHEL8