CentOS6 向けの EPEL と remi
$ wget http://ftp.riken.jp/Linux/fedora/epel/6/x86_64/epel-release-6-5.noarch.rpm
$ sudo rpm -ivh epel-release-6-5.noarch.rpm
$ wget http://remi-mirror.dedipower.com/enterprise/remi-release-6.rpm
$ sudo rpm -ivh remi-release-6.rpm
rpmforge 使えないらしい