Add EPEL software repository for centos

I want to use RedHatEnterpriseLinux, but I am very shy (please buy rhelassubux

I want to use Red Hat Enterprise Linux, but I feel shy (welcome to buy rhel as submodules: US $1,499/year). Fortunately, there is a centos option, but I always feel that its package is a little less.

Fortunately, we can now use the EPEL (Extra Packages for Enterprise Linux) released by the Fedora Project. EPEL is the RHEL Fedora software repository and can be added to it, you can get the high quality, high performance, high reliability of rhel as, and the easy-to-use (key is free) software package update function.

EPEL (http://fedoraproject.org/wiki/EPEL) is a program built by the Fedora community to provide high-quality software packages for RHEL and derivative releases such as CentOS and Scientific Linux. With EPEL installed, you can install the software through yum install package-name, just like on Fedora.
Installing EPEL is very simple:
* RHEL 4 (centos 4 ):

Su-c' rpm-Uvh restart'

* RHEL 5 (centos 5 ):

Su-c' rpm-Uvh restart'

After the installation, you can use yum to install the software (note the following version number, now there is no epel-release-5.3.noarch.rpm, 5.4 is the latest version), such as Nagios:

# Yum-y install nagios

For nginx :( refer to: http://blog.haohtml.com/archives/6051)

# Yum-y install nginx

To check whether a software package exists in EPEL Repo:

# Yum search package-name