问题：
[root@yaya ~]# yum -y install gcc-* Loaded plugins: fastestmirror, presto Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was 14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'" Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
原因：
dns服务器没有配置正确
解决办法：
1、打开文件/etc/resolv.conf在其中添加：
nameserver 8.8.8.8 nameserver 8.8.4.4
2、然后重启网卡：使用命令:
service network restart
问题解决