Install MongoDB
Since MongoDB was removed from Fedora[1] it must be installed separately. The EL7 community package[1] from MongoDB works on Fedora as well.
[1] https://fedoraproject.org/wiki/Changes/MongoDB_Removal
[2] https://www.mongodb.com/download-center/community
Firewall Configuration
# firewall-cmd --permanent --add-service=unifi
To permit Cloud Access:
# firewall-cmd --permanent --add-service=unifi-cloud
Then reload the configuration:
# firewall-cmd --reload
Enabling the SystemD service
Enabling and starting the unifi service:
# systemctl enable unifi.service # systemctl start unifi.service
Afterwards you should be able to browse to the controller at:
https://<host>:8443