CentOS 更換 YUM 鏡像源

1. 安裝 wget

type wget
# 若是找不到wget命令，須要先安裝
yum -y install wget

2. 備份

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

3. 下載

# CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
# CentOS 8
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo

4. 生成緩存

# 清除緩存
yum clean all
# 生成緩存，創建元數據
yum makecache

參考：https://developer.aliyun.com/...