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