Centos7更換yum源為阿裏源

Centos7更換yum源為阿裏源
1、備份源

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

2、下載新的 CentOS-Base.repo 到 /etc/yum.repos.d/

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

3、非阿裏雲ECS用戶會出現 Couldn’t resolve host ‘mirrors.cloud.aliyuncs.com’ 信息，不影響使用，可以修改配置

 sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

4、生成緩存

 yum makecache

5、查看當前源

 yum repolist