During installation of Data Factory if the process is stuck in step Creating ceph user after running several attempts to install it will be neccesary to remove ceph user to allow installation script to create it again.
In order to remove ceph user, please run the following commands
kubectl -n rook-ceph exec -it $(kubectl -n rook-ceph get pods | grep tools | awk '{print $1}')
Previous command will connect to the ceph tools pod. Then delete ceph user
radosgw-admin user rm --uid=system-user --system --purge-data
Once user is removed attempt to run installation again