This how to guide shows you’ll how to enable EPEL repository under RHEL/CentOS 6/5 to install additional standard open source packages by using YUM command.
Install EPEL Repository in Linux
根据自己的系统版本安装，具体 如下：
RHEL/CentOS 7 64-Bit
wget https://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
rpm -ivh epel-release-7-5.noarch.rpm
RHEL/CentOS 6 32-Bit
wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
RHEL/CentOS 6 64-Bit
wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
RHEL/CentOS 5 32-Bit
wget http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
rpm -ivh epel-release-5-4.noarch.rpm
RHEL/CentOS 5 64-Bit
wget http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
rpm -ivh epel-release-5-4.noarch.rpm
RHEL/CentOS 4 32-Bit
wget http://download.fedoraproject.org/pub/epel/4/i386/epel-release-4-10.noarch.rpm
rpm -ivh epel-release-4-10.noarch.rpm
RHEL/CentOS 4 64-Bit
wget http://download.fedoraproject.org/pub/epel/4/x86_64/epel-release-4-10.noarch.rpm
rpm -ivh epel-release-4-10.noarch.rpm
How Do I Verify EPEL Repo?（如何使用epel源安装软件）
You need to run the following command to verify that the EPEL repository is enabled. Once you ran the command you will see epel repository.（确认安装是否成功执行下边命令，会出现epel repository库）
# yum repolist #查看活跃的库
Sample Output
Loaded plugins: download only, fastestmirror, priorities Loading mirror speeds from cached host file * base: centos.aol.in * epel: ftp.cuhk.edu.hk * extras: centos.aol.in * rpmforge: be.mirror.eurid.eu * updates: centos.aol.inReducing CentOS-5 Testing to included packages only Finished 1469 packages excluded due to repository priority protections repo id repo name statusbase CentOS-5 - Base 2,718+7epel Extra Packages for Enterprise Linux 5 - i386 4,320+1,408 extras CentOS-5 - Extras 229+53 rpmforge Red Hat Enterprise 5 - RPMforge.net - dag 11,251 repolist: 19,075
How Do I Use EPEL Repo?（如何使用epel）
You need to use YUM command for searching and installing packages. For example we search for Zabbix package using epel repo, lets see it is available or not under epel.
# yum --enable repo=epel info zabbix （查看是否有zabbix软件）
Sample Output
Available Packages Name : zabbix Arch : i386 Version : 1.4.7 Release : 1.el5 Size : 1.7 M Repo : epel Summary : Open-source monitoring solution for your IT infrastructure URL : http://www.zabbix.com/ License : GPL Description: ZABBIX is software that monitors numerous parameters of a network.
Let’s install Zabbix package using epel repo option–enable repo=epel switch.
# yum --enable repo=epel install zabbix （安装zabbix）
Note: The epel configuration file is located under /etc/yum.repos.d/epel.repo.（配置文件在/etc/yum.repos.d/epel.repo这个路径下）
This way you can install as many as high standard open source packages using EPEL repo.
