Red Hat Software Collections repository opened which can be used in Centos
The repository is filled with fairly current versions of web software: Perl 5.16.3
PHP 5.4.14
Python 2.7
Python 3.3
Ruby 1.9.3
MariaDB 5.5
MySQL 5.5
PostgreSQL 9.2
Node.js 0.10
The documentation describes the mysql and postgresql
dev.centos.org/ update process centos / 6 / SCL / docs
You can install by downloading the repository settings file from here
dev.centos.org/centos/6/SCL/scl.repo