yum源配置

1.备份/etc/yum.repos.d/下

cd /etc/yum.repos.d/
mv xxx.repo xxx.repo.back

 

2.下载阿里云的Centos-7.repo文件

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

 

3.重新加载yum

yum clean all
yum makecache