Description of problem:
In section 8.5.3 of https://access.qa.redhat.com/documentation/en/red-hat-ceph-storage/2/single/object-gateway-guide-for-red-hat-enterprise-linux#configuring_a_master_zone, 

# radosgw-admin zonegroup remove --rgw-zonegroup=default --rgw-zone=default
# radosgw-admin update --commit
# radosgw-admin zone delete --rgw-zone=default
# radosgw-admin update --commit

The zonegroup has already been deleted in section 8.5.2. So running the first command would result in error while trying to remove a zone from the already deleted zonegroup. 


In the second and fourth command lines: 

It should be changed to "radosgw-admin period update --commit"