虚拟机中不能上外网

虚拟机中不能上外网，报错如下：

curl: (6) Could not resolve host: www.baidu.com;

一般是DNS配置得不对。因此修改一下DNS

[root@localhost ~]# vim /etc/resolv.conf
 
// 原先的DNS
# Generated by NetworkManager
nameserver 8.8.8.8
 
// 修改后的DNS
# Generated by NetworkManager
nameserver 114.114.114.114
nameserver 8.8.8.8
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