【已回应】我的虚拟主机centos6.9安装不上宝塔求解决

安装的时候报错如下：
[root@209227 ~]# yum install -y wget && wget -O install.sh http://download.bt.cn/install/install.sh && sh install.sh
Loaded plugins: fastestmirror, security
Setting up Install Process
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?re ... repo=os&infra=stock error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
Error: Cannot find a valid baseurl for repo: base



请教各位大神客服，这样的要怎么处理，详细一点，谢谢了！

dns或者Yum源有问题
不知道怎么修复就联系服务器运营商看看