Every so often we update our installation guide. This time we had a lot to update with MongoDB and CentOS components having big updates since the last guide.
How To Install NodeBB 1.13, NodeJS 13, MongoDB 4.2 on CentOS 8
This is assuming a CentOS 8 Stream Minimal starting point, with "yum upgrade -y" having been run ahead of time. One script to take you from vanilla minimal install to fully running NodeBB community.