今天发现服务器ping不了域名，却能ping 通 ip
# ping
ping: unknown host
# ping 163.177.151.110
PING 163.177.151.110 (163.177.151.110) 56(84) bytes of data.
64 bytes from 163.177.151.110: icmp_seq=1 ttl=48 time=273 ms
查看 /etc/ 显示 No nameservers found
# Dynamic (5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
于是在配置文件下添加DNS
# sudo vim /etc/
nameserver 8.8.8.8
nameserver 8.8.4.4
再尝试一下，ping正常
$ ping
PING (14.215.177.38) 56(84) bytes of data.
64 bytes from 14.215.177.38: icmp_seq=1 ttl=56 time=9.20 ms
64 bytes from 14.215.177.38: icmp_seq=2 ttl=56 time=9.24 ms
到这里，我的问题已经解决.
如果问题没解决尝试以下修改
# vi /etc/
hosts: files dns
改成:
hosts: files dns wins
实际上重启后又不行了，需要在上面的基础上关闭 networkmanager 服务
临时关闭：
service networkmanager stop
永久关闭：
chkconfig NetworkManager off
重启
# reboot
# ping
PING (216.58.219.164) 56(84) bytes of data.
64 bytes from mia07s27-in-f164. (216.58.219.164): icmp_seq=1 ttl=57 time=0.547 ms
一切都安静了。。。
参考：
/weixin_38196258/article/details/84287734