问题
从网上得知 /etc/resolv.conf
中的DNS配置是从/etc/resolvconf/resolv.conf.d/head
中加载而来,所以每回改resolv.conf
都会失效,在此文件里面已经有说明
打开/etc/resolv.conf
内容如下:
jie@jie:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
内容是一段警告:说这个文件是resolvconf程序动态创建的,不要直接手动编辑,修改将被覆盖。
所以我们不能直接修改
这个文件
解决方法1:
sudo vim /etc/resolvconf/resolv.conf.d/base
添加以下内容(随便一个就行):
nameserver 114.114.114.114
nameserver 114.114.115.115
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 223.5.5.5
nameserver 223.6.6.6
如果有多个DNS就一行一个
修改好保存,然后执行:
sudo resolvconf -u
此时再看/etc/resolv.conf
文件,最下面就多了以下内容:
jie@jie:$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 114.114.114.114
nameserver 114.114.115.115
nameserver 8.8.8.8
现在此DNS已经生效了,无需重启,当然重启也不会丢失
解决方法2:
修改/etc/resolvconf/resolv.conf.d/head
jie@jie:$ cat /etc/resolvconf/resolv.conf.d/head
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
这个文件里提示不要手动修改。按照系统提示的说法,不建议改此文件,当然改也是可以:
sudo vim /etc/resolvconf/resolv.conf.d/head
添加以下内容(随便一个就行):
nameserver 114.114.114.114
nameserver 114.114.115.115
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 223.5.5.5
nameserver 223.6.6.6
如果有多个DNS就一行一个
修改好保存,然后执行:
sudo resolvconf -u