DNS/Knot-DNS/configurationについて、ここに記述してください。

https://www.knot-dns.cz/documentation/

https://www.knot-dns.cz/docs/2.x/html/configuration.html

# Example of a very simple Knot DNS configuration.

server:
    listen: 0.0.0.0@53
    listen: ::@53

zone:
  - domain: example.com
    storage: /var/lib/knot/zones/
    file: example.com.zone

log:
  - target: syslog
    any: info

ubuntu --> /usr/local/etc/knot