yum install crontabs 安装错误
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=i386&repo=os error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
Error: Cannot find a valid baseurl for repo: base
网上说是DNS的问题，我去那个/etc/resolv.conf 添加了nameserver 8.8.8.8 和search localdomain,还是没有作用
