# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2. 下载新的CentOS-Base.repo 到/etc/yum.repos.d/
CentOS 5
# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repoCentOS 6
# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repoCentOS 7
# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 3. 生成缓存 # yum makecache 参考： http://mirrors.aliyun.com/help/centos?spm=5176.bbsr150321.0.0.d6ykiD 原文链接：https://www.f2er.com/centos/380933.html