However domains are still being resolved through the old DNS server. If I run nslookup and enter server in there, it still shows the old DNS servers as default. Not the ones I configured before the reboot. How do I permanently change my server's DNS settings?

[SOLVED] Change Ubuntu and Avahi DNS Servers - Linux Forum May 24, 2017 How to change the DNS settings in Ubuntu - YouTube Aug 16, 2016 How to Flush DNS Cache on Ubuntu 18.04 LTS

How to Change Your Computer’s IP Address From the Command

How to Set DNS Nameservers on Ubuntu 18.04 | Linuxize Aug 21, 2019 Set custom DNS servers on Ubuntu 18.04 or 20.04 - Ricmedia May 22, 2020

Flush Ubuntu DNS Cache. Some Debian Linux like Ubuntu still uses systemd-resolve. This resolve is already built into the system in Ubuntu and it is being used for a lot of things by the operating system automatically without the user’s knowledge. Its already installed and set up in Ubuntu, the user just has to enter the command to flush the

linux - Permanently change DNS settings in Ubuntu Server To get past DHCP hooks which overwrite the /etc/resolv.conf file on Ubuntu, you need to install the resolvconf package and manually edit its base configuration file with your appropriate nameserver or other DNS options in order to make changes permanent to system-wide resolv.conf file. How to change DNS ip address in RHEL - nixCraft Jan 03, 2019 Change DNS settings on Linux - Change DNS settings on Linux. Last updated on: 2019-07-22; Authored by: Jered Heeschen; If you find that your server’s Domain Name Server (DNS) settings are misconfigured or you prefer to use your own, this article describes how to change your Linux® server’s DNS settings. Linux Changing DNS Search Order - nixCraft