添加EPEL源

Install the extra repositories

Centos 5.x

wget [url]http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm[/url]
wget [url]http://rpms.famillecollet.com/enterprise/remi-release-5.rpm
sudo rpm -Uvh remi-release-5*.rpm epel-release-5*.rpm[/url]

Centos 6.x

wget [url]http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm[/url]
wget [url]http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm[/url]

Once installed you should see some additional repo definitions under the /etc/yum.repos.d directory.

$ ls -1 /etc/yum.repos.d/epel* /etc/yum.repos.d/remi.repo
/etc/yum.repos.d/epel.repo
/etc/yum.repos.d/epel-testing.repo
/etc/yum.repos.d/remi.repo