备份
mkdir -p /etc/yum.repos.d/bak
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak/
换源
重建缓存
yum clean all
yum makecache
Cent OS 7 源
centos7 x86
阿里云源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-aliyun.repo https://mirrors.wlnmp.com/centos/Centos7-aliyun-x86_64.repo |
阿里云源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-aliyun-x86_64.repo -P /etc/yum.repos.d/ |
网易源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-163.repo https://mirrors.wlnmp.com/centos/Centos7-163-x86_64.repo |
网易源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-163-x86_64.repo -P /etc/yum.repos.d/ |
腾讯源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-tencent.repo https://mirrors.wlnmp.com/centos/Centos7-tencent-x86_64.repo |
腾讯源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-tencent-x86_64.repo -P /etc/yum.repos.d/ |
中国科学技术大学源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-ustc.repo https://mirrors.wlnmp.com/centos/Centos7-ustc-x86_64.repo |
中国科学技术大学源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-ustc-x86_64.repo -P /etc/yum.repos.d/ |
荆楚理工学院源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-jcut.repo https://mirrors.wlnmp.com/centos/Centos7-jcut-x86_64.repo |
荆楚理工学院源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-jcut-x86_64.repo -P /etc/yum.repos.d/ |
清华源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-tuna.repo https://mirrors.wlnmp.com/centos/Centos7-tuna-x86_64.repo |
清华源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-tuna-x86_64.repo -P /etc/yum.repos.d/ |
南阳理工学院源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-nyist.repo https://mirrors.wlnmp.com/centos/Centos7-nyist-x86_64.repo |
南阳理工学院源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-nyist-x86_64.repo -P /etc/yum.repos.d/ |
centos7 aarch64、i386、ppc64 etc..
阿里云源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-aliyun.repo https://mirrors.wlnmp.com/centos/Centos7-aliyun-altarch.repo |
阿里云源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-aliyun-altarch.repo -P /etc/yum.repos.d/ |
网易源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-163.repo https://mirrors.wlnmp.com/centos/Centos7-163-altarch.repo |
网易源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-163-altarch.repo -P /etc/yum.repos.d/ |
腾讯源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-tencent.repo https://mirrors.wlnmp.com/centos/Centos7-tencent-altarch.repo |
腾讯源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-tencent-altarch.repo -P /etc/yum.repos.d/ |
中国科学技术大学源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-ustc.repo https://mirrors.wlnmp.com/centos/Centos7-ustc-altarch.repo |
中国科学技术大学源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-ustc-altarch.repo -P /etc/yum.repos.d/ |
荆楚理工学院源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-jcut.repo https://mirrors.wlnmp.com/centos/Centos7-jcut-altarch.repo |
荆楚理工学院源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-jcut-altarch.repo -P /etc/yum.repos.d/ |
清华源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-tuna.repo https://mirrors.wlnmp.com/centos/Centos7-tuna-altarch.repo |
清华源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-tuna-altarch.repo -P /etc/yum.repos.d/ |
南阳理工学院源（curl方式）
| 1 | curl -o /etc/yum.repos.d/Centos7-nyist.repo https://mirrors.wlnmp.com/centos/Centos7-nyist-altarch.repo |
南阳理工学院源（wget方式）
| 1 | wget https://mirrors.wlnmp.com/centos/Centos7-nyist-altarch.repo -P /etc/yum.repos.d/ |