centos更换更新源

1. 备份源文件
# 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.repo

CentOS 6

# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 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