永久设置ubuntu dns 服务器

DNS on Ubuntu 18.04 and laters

For years it’s been simple to set up DNS on a Linux machine. Just add a couple of entries to /etc/resolv.conf and you’re done.

Use 114 public DNS servers.

nameserver 114.114.114.114
But things change and now it’s not that simple. If you now edit /etc/resolv.conf on Ubuntu you’ll find that the edits are ephemeral. If you restart (or even hibernate) your machine then they’ll be overwritten by default content.

        nameserver 127.0.0.53

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This is pretty simple to fix though.

Install the resolvconf package.

        sudo apt install resolvconf

Edit /etc/resolvconf/resolv.conf.d/head and add the following:

Make edits to /etc/resolvconf/resolv.conf.d/head.

        nameserver 114.114.114.114

Restart the resolvconf service.

        sudo service resolvconf restart

Fix should be permanent.