Pterodactyl is a software for managing game servers. As it’s still in development, installing it in some environments is not straight-forward. You should read the official docs along. The guide is written for Plesk with CentOS but could be helpful for other panel users like cPanel too.
Originally published 9. Sep 2017
EDIT (7. Feb 2018): Fixed error thanks to samyratchet
EDIT (15. Mar 2018): Updated for Pterodactyl v0.7.6
EDIT (28. Jun 2018): Updated for Pterodactyl v0.7.7
EDIT (06. Mar 2019): Updated for Pterodactyl v0.7.13
EDIT (11. May 2020): Updated for Pterodactyl v0.7.17; Added screenshots
EDIT (6. Dec 2020): Updated for Pterodactyl v1.1.1; Use –user SystemD