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Accepted
Daniel
Asked: 2020-05-10 17:20:46 +0800 CST

Changing the DNS servers Ubuntu Server 20.04 - Arm64 (Raspi)

  • 772

I am running Ubuntu server 20.04 on a Raspberry Pi 4 and I am having difficulty updating the DNS entry in resolv.conf. resolv.conf points to the nameserver 127.0.0.53; however, I disabled the systemd-networkd dnsstublistener so I could run my own DNS server. How can I change the nameserver to point to 127.0.0.1 instead?

dns raspberrypi systemd-networkd 20.04

2 Answers

  1. Best Answer

    Use netplan instead of resolv.conf

    cd /etc/netplan
ls
sudo nano 50-cloud-init.yaml

    Add nameservers entry.

    network:
    ethernets:
        [network-device]:
            ...
            nameservers:
                addresses:
                - 2001:4860:4860::8888
                - 2001:4860:4860::8844
                - 8.8.8.8
                - 8.8.4.4

    Then to apply and test:

    sudo netplan apply
systemd-resolve --status
    • 11

  2. I discovered that my changes were not being applied to resolv.conf because of a symbolic link issue. To fix, I first deleted the file /etc/resolv.conf, which was a symbolic link to /run/systemd/resolve/stub-resolv.conf, and then created a new link to /run/systemd/resolve/resolv.conf.

    sudo rm /etc/resolv.conf
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
    • 5