CentOS7 更换yum源

进入yum.repos.d文件夹

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

网易源

wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

阿里源

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

生成缓存

yum makecache

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