由于 CentOS 6.X 已经停止维护更新，国内所有的镜像源、 yum 源已经更新地址，使用阿里云 yum：http://mirrors.aliyun.com/centos-vault/ 寻找对应自己系统版本
centos 6.X 的repo文件
[base] name=CentOS-6.9 - Base - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos-vault/6.9/os/$basearch/ ebable=1 gpgcheck=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-6 - Updates - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos-vault/6.9/updates/$basearch/ gpgcheck=0 enable=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-6 - Extras - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos-vault/6.9/extras/$basearch/ gpgcheck=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-6 - Plus - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos-vault/6.9/centosplus/$basearch/ gpgcheck=0 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6 #contrib - packages by Centos Users [contrib] name=CentOS-6.9 - Contrib - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos-vault/6.9/contrib/$basearch/ gpgcheck=0 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
执行以下命令
# yum clean all # yum makecache
之后就可以爽快的玩耍了。但还是提醒各位，尽快升级自己的系统，或者构建内部的yum仓库。