"Couldn't resolve host 'mirrorlist.centos.org'"

[root@localhost ~]# yum install vim
已加载插件：fastestmirror
设置安装进程
Determining fastest mirrors
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os&infra=stock error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
错误：Cannot find a valid baseurl for repo: base

Couldn't resolve host 'mirrorlist.centos.org

vim /etc/resolve.conf

nameserver    8.8.8.8