in the course of laying down the centos8 operating system layout we (Denny and me) hat a discussion how to proceed with "/tmp“ on servers. Currently, there is no extra partition mounted here and we have 2-3 GB free space available for your use.

Widely used setup for web servers is to put a small tmpfs mount here (1-2GB) with "noexec“ mount option. This is more secure and allows for faster script execution. 

For file transfer operations between servers and your workstations you should use your home directories, anyway.

Question: 

Migration to centos8 ist a slow process, there is no ad-hoc switch on production systems without testing.

Kind regards

Gunnar