Hi,
Greetings first: I am maintaining the PostgreSQL community RPMs : http//yum.postgresql.org
About 2 years before, Karanbir and I spoke a bit about adding these RPMs to CentOS repositories. Right now, only 8.4 is officially supported in RHEL/CentOS, which will be EOL'ed in a few months by upstream. However, community has RPMs for all versions from 8.4 to 9.3, which are in active development and released at the same time with the tarballs.
Community RPMs has the ability for parallel installation also, so that people can run multiple version as the same time.
So, how would you like to proceed? The SVN repo is open to public, and all you will need to do is pulling them and building the packages on CentOS servers.
Regards,