目前官方 yum 套件管理工具中套件数量已经不少，但是还是有些没有包含到其中。例如 phpMyAdmin、CentOS 6 里用到的 DRBD 及 Heartbeat 等。

安装 RPMforge、ELRepo、EPEL 套件库
http://repoforge.org/use/
http://elrepo.org/tiki/tiki-index.php
https://fedoraproject.org/wiki/EPEL

# wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm
# wget http://elrepo.org/elrepo-release-6-4.el6.elrepo.noarch.rpm
# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm

# rpm -ivh rpmforge-release-0.5.2-2.el6.rf.i686.rpm
# rpm -ivh elrepo-release-6-4.el6.elrepo.noarch.rpm
# rpm -ivh epel-release-6-5.noarch.rpm