centos7 修改yum源为阿里源

centos7 修改yum源为阿里源,某下网络下速度比较快 首先是到yum源设置文件夹里

1.安装base reop源

# cd /etc/yum.repos.d

接着备份旧的配置文件

# sudo mv CentOS-Base.repo CentOS-Base.repo.bak

下载阿里源的文件

# sudo wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

2 安装epel repo源：

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.repo http://mirrors.aliyun.com/repo/epel-5.repo

3.清理缓存

# yum clean all

4.重新生成缓存

yum makecache

参考：
http://mirrors.aliyun.com/repo/
https://blog.csdn.net/jameshadoop/article/details/54881295