DNS files

• /etc/hosts
• /etc/resolv.conf
• /etc/systemd/resolved.conf
• /etc/nsswitch.conf
• /etc/network/interfaces

See also

• DNS, DNS files, /etc/hosts, /etc/resolv.conf, /etc/systemd/resolved.conf, /etc/nsswitch.conf

https://askubuntu.com/questions/346838/how-do-i-configure-my-dns-settings-in-ubuntu-server

https://askubuntu.com/questions/346838/how-do-i-configure-my-dns-settings-in-ubuntu-server