Our system uses an internally managed DNS powerdns-recursor with a bunch of forwarded zones for our split-horizon DNS. We’re using Ubuntu 18.04 images, which by default configure /etc/netplan/50-cloud-init.yaml with DO’s name servers, which then systemd-resolv picks up on.
Is there a ‘proper’ way to remove the name servers, or simply replace them with our custom servers? The only way I can think of doing this would involve a pre-network oneshot systemd service to re-write the file after cloud-init does it’s thing.
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To replace or remove the default DigitalOcean name servers with your custom name servers, you can modify the /etc/netplan/50-cloud-init.yaml file. Here’s how:
-
- network:
- ethernets:
- eth0:
- dhcp4: true
- dhcp6: true
- match:
- macaddress: XX:XX:XX:XX:XX:XX
- set-name: eth0
- version: 2
- nameservers:
- addresses: [your.nameserver.ip.1, your.nameserver.ip.2]
Replace your.nameserver.ip.1 and your.nameserver.ip.2 with your custom name servers’ IP addresses. After updating the file, apply the new configuration:
- sudo netplan apply
This method will work without needing a pre-network oneshot systemd service.
Regards
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