CentOS7.4怎样更新yum源

1. 备份原来的yum源

$sudo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo-backup

2.设置aliyun的yum源

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

3.添加EPEL源

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

4.清理缓存，生成新缓存，执行yum系统更新

$sudo yum clean all

$sudo yum makecache

$sudo yum update（可选）

参考文章：

https://blog.csdn.net/zytbft/article/details/81166345

https://yq.aliyun.com/articles/691851?spm=a2c4e.11155472.0.0.42e22088vZPR8y

CentOS7.4怎样更新yum源

原文：https://www.cnblogs.com/opsprobe/p/10673031.html