I strongly recommend going with the 3.6 version of RT. The install takes a few minutes, and it otherwise meets all the requirements of our project. Migration of old queues is simple. There is cost savings in the near and long-term.
There is no rpm of RT3.8 that works for RHEL (32 or 64 bit) and none seem to be forthcoming. Someday perhaps someone will put one together, but it doesn’t look like anytime soon.
I CAN do a manual install of RT3.8 using the Best Practical install scripts. It is not terribly hard. However, the long-term costs of this are large. The install scripts put all the binaries, configuration files, and libraries in the wrong places for RHEL/CentOS, and working outside the package manager means files could be clobbered at any time. On the other hand, the rpms for RT3.6 use the package manager and put all the config files in /etc, all the perl modules in the perl modules dir, and the various tools in /usr/bin and /usr/sbin. The non-standard install using the scripts creates recurring costs in the future as the system is significantly more difficult to update and harder to maintain, like by a factor of 50 (five minutes compared to 4 hours).
Additionally, the cost of migration of old content from 3.6 to 3.8 is unknown.
Again, I will install either RT3.6 or RT3.8 but I need you to understand
and acknowledge the costs of the choice.
Thanks to Gary Greene for the info about his latest centos rpm build.