This upgrade procedure has been tested on Fedora 27, upgrading an existing OTRS 6 (6.0.2) version to a newer OTRS 6 (6.0.3) version. It has been used twice successfully. Hope this is of help for someone.

Open a terminal.

Run the following as “root”:

sudo -i

systemctl stop crond.service

systemctl stop httpd.service

Run the following as “otrs” user:

su - otrs

cd /opt/otrs/

bin/Cron.sh stop

bin/otrs.Daemon.pl stop

exit

Run the following as “root”:

cd /opt/

ls

rm otrs-6.0.2-03.noarch.rpm

ls

curl http://ftp.otrs.org/pub/otrs//RPMS/fedora/26/otrs-6.0.3-02.noarch.rpm -o otrs-6.0.3-02.noarch.rpm

ls

rpm -Uvh otrs-6.0.3-02.noarch.rpm

systemctl start httpd.service

systemctl start crond.service

Run the following as “otrs” user:

su - otrs

cd /opt/otrs/

bin/otrs.Daemon.pl start

bin/Cron.sh start

The OTRS 6 has now been updated to a  newer OTRS 6 version

Regards

Rudolf Bargholz