/etc/resolv.conf

最新推荐文章于 2024-08-17 03:08:54 发布

micro9981

最新推荐文章于 2024-08-17 03:08:54 发布

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本文链接：https://blog.youkuaiyun.com/micro9981/article/details/82187603

本文解决了Ubuntu启动后网络配置文件被重置的问题，通过设置固定的DNS服务器并锁定配置文件防止被改动，确保了系统的网络连接稳定。

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每次启动ubuntu后 /etc/resolv.conf都被改动，把nameserver行都删掉了,导致上不了网，如何解决？

最笨的办法是每次启动后在/etc/resolv.conf中加入两行

nameserver 127.0.0.1

nameserver 192.168.1.1

其中 127.0.0.1是本地DNS，192.168.1.1是默认路由器
正确的应该是下面这样：

google@google:~$ cat /etc/resolv.conf

# Generated by NetworkManager

nameserver 127.0.0.1 //本地DNS地址

nameserver 202.96.134.33 //第一DNS地址

nameserver 202.96.128.86 //第二DNS地址

$ sudo chattr +i /etc/resolv.conf //阻止resolv.conf被修改

$ sudo chattr -i /etc/resolv.conf //解除对resolv.conf文件的写阻止，及允许对resolv.conf进行修改

显示文件 Attributes的命令是 lsattr /etc/resolv.conf

google@google:~$ sudo chattr +i /etc/resolv.conf

google@google:~$ lsattr /etc/resolv.conf

----i------------e- /etc/resolv.conf

google@google:~$ sudo chattr -i /etc/resolv.conf

google@google:~$ lsattr /etc/resolv.conf

-----------------e- /etc/resolv.conf

A file with the `i' attribute cannot be modified: it cannot be deleted or renamed, no link can be created to this file and no data can be written to the file. Only the superuser or a process pessessing the CAP_LINUX_IMMUTABLE capability can set or clear this attribute.