Ubuntu下修改DNS重启也能用的方法

 

 

 

安装好Ubuntu以后设置了静态IP地址,再重启后就没法解析域名。想从新设置一下DNS,打开/etc/resolv.confspa

 

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程序动态建立的,不要直接手动编辑,修改将被覆盖。.net

果不其然,修改后重启就失效了,搜索了Ubuntu下设置DNS的相关资料,总结出两个办法:code

方法一 经过/etc/network/interfaces,在它的最后增长一句:server

 

dns-nameservers 8.8.8.8

 

8.8.8.8是Google提供的DNS服务,这里只是举一个例子,你也能够改为电信运营商的DNS。重启后DNS就生效了,这时候再看/etc/resolv.conf,最下面就多了一行:blog

# 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 8.8.8.8

 

 

方法二 经过修改:dns

/etc/resolvconf/resolv.conf.d/base(这个文件默认是空的)

 

在里面插入:域名

nameserver 8.8.8.8
nameserver 8.8.4.4

若是有多个DNS就一行一个class

修改好保存,而后执行file

resolvconf -u搜索

再看/etc/resolv.conf,最下面就多了2行:

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 8.8.8.8
nameserver 8.8.4.4

能够看到咱们的设置已经加上了,而后再ping一个域名,当时就能够解析了,无需重启。

附:CentOS下修改DNS则容易的多了,直接修改/etc/resolv.conf,内容是:
nameserver 8.8.8.8
nameserver 8.8.4.4

保存就生效了,重启也没问题。

 

 

转自:

https://blog.csdn.net/todd911/article/details/9251087

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