安装Howto
安装CentOS SCLo RH存储库：
yum install centos-release-scl-rh
epel是社区强烈打造的免费开源发行软件包版本库。
EPEL，即Extra Packages for Enterprise Linux的简称，是为企业级Linux提供的一组高质量的额外软件包，包括但不限于Red Hat Enterprise Linux (RHEL), CentOS and Scientific Linux (SL), Oracle Enterprise Linux (OEL)。(关于 : EPEL)
方法一：yum命令安装
yum install epel-release -y
方法二：手动安装
针对系统架构选择相应的类型：http://dl.fedoraproject.org/pub/epel/7/。我们使用的x86_64，就要进入该目录下寻找相应包，安装方法如下：
# rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
如果报冲突,可以把冲突的包删除
yum remove epel-release
或者：
# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-2.noarch.rpm
# rpm -vih epel-release-7-2.noarch.rpm
更新数据
yum clean all && yum makecache
查看仓库多了下面一行，有一万多个包。
<pre class="brush:bash;toolbar:false" style="font-family: Arial, Helvetica, sans-serif; padding: 5px; max-width: 680px !important; background-color: rgb(246, 246, 246); border: 1px dotted rgb(170, 170, 170); white-space: pre-wrap; word-wrap: break-word;">*epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,018</pre>
<pre class="brush:bash;toolbar:false" style="font-family: Arial, Helvetica, sans-serif; padding: 5px; max-width: 680px !important; background-color: rgb(246, 246, 246); border: 1px dotted rgb(170, 170, 170); white-space: pre-wrap; word-wrap: break-word;">[root@hddcluster2 ~]# yum repolist
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.cn99.com
* epel: mirror01.idc.hinet.net
* extras: mirrors.aliyun.com
* updates: mirrors.cn99.com
repo id repo name status
base/7/x86_64 CentOS-7 - Base 9,363
*epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,018
extras/7/x86_64 CentOS-7 - Extras 435
updates/7/x86_64 CentOS-7 - Updates 418
repolist: 21,234
[root@hddcluster2 ~]#
本文出自 “禅剑一如” 博客，请务必保留此出处http://yanconggod.blog.51cto.com/1351649/1890318
