国内@H_403_5@yum源的安装@H_403_5@(163，阿里云，@H_403_5@epel)

----阿里云镜像源

1、备份

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

@H_403_5@2、下载新的@H_403_5@CentOS-Base.repo到@H_403_5@/etc/yum.repos.d/

CentOS 5

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

CentOS 6

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 7

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

@H_403_5@3、之后运行@H_403_5@yum clean all，yum makecache生成缓存

@H_403_5@----163镜像源

第一步：备份你的原镜像文件，以免出错后可以恢复。

@H_403_5@mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup第二步：下载新的@H_403_5@CentOS-Base.repo到@H_403_5@/etc/yum.repos.d/

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS5-Base-163.repo

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo

@H_403_5@wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo

@H_403_5@3、之后运行@H_403_5@yum clean all，yum makecache生成缓存

@H_403_5@----EPEL源

EPEL（@H_403_5@Extra Packages for Enterprise Linux）是由@H_403_5@Fedora社区打造，为@H_403_5@RHEL及衍生发行版如@H_403_5@CentOS等提供高质量软件包的项目。装上了@H_403_5@EPEL，就像在@H_403_5@Fedora上一样，可以通过@H_403_5@yum install软件包名，即可安装很多以前需要编译安装的软件、常用的软件或一些比较流行的软件，比如现在流行的@H_403_5@Nginx、@H_403_5@htop、ncdu、vnstat等等，都可以使用EPEL很方便的安装更新。

目前可以直接通过执行命令：@H_403_5@yum install epel-release直接进行安装，如果此命令无法安装可以尝试以下方法

@H_403_5@----安装@H_403_5@EPEL阿里云源

@H_403_5@1、备份@H_403_5@(如有配置其他@H_403_5@epel源@H_403_5@)

mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup

mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup

@H_403_5@2、下载新@H_403_5@repo到@H_403_5@/etc/yum.repos.d/

epel(RHEL 7)

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

epel(RHEL 6)

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo

epel(RHEL 5)

wget -O /etc/yum.repos.d/epel.repohttp://mirrors.aliyun.com/repo/epel-5.repo

----官方源直接安装

CentOS/RHEL5：

rpm -Uvhhttps://dl.fedoraproject.org/pub/epel/epel-release-latest-5.noarch.rpm

CentOS/RHEL 6rpm -Uvhhttps://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm

CentOS/RHEL 7rpm -Uvhhttps://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm