错误描述在CentOS 6 下使用yum的时候出现了问题：Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again解决方法把/etc/yum.repos.d/epel.repo，文件第3行注释去掉，把第四行注释掉。具体如下：vi /etc/yum.repos.d/epel.repo[epel]name=Extra Packages for Enterprise L

一般情况下安装下net-tools就能好。yum install net-tools