Linux DNS Server List

In the vast realm of networking, Domain Name System (DNS) servers play a pivotal role in translating human-readable domain names into IP addresses, facilitating seamless communication across the internet. For Linux users, understanding and managing DNS servers is essential for efficient and reliable network operations. This article will delve into the Linux DNS Server List, providing insights, commands, and step-by-step instructions to navigate the world of DNS servers on a Linux system.

Understanding DNS Servers:
Before delving into the Linux DNS Server List, let's briefly understand the significance of DNS servers. DNS is the backbone of the internet, converting user-friendly domain names into numeric IP addresses that machines use to identify each other. DNS servers store and manage this translation information, ensuring smooth communication between devices.

Viewing DNS Server Configuration:
Linux provides several commands to view and manage DNS server configurations. To begin, let's use the systemd-resolve command to display the current DNS server settings:

systemd-resolve --status

This command will provide a comprehensive overview of the DNS server configuration, including the current DNS servers in use.

Listing Available DNS Servers:
To obtain a list of DNS servers available to your system, you can utilize the nmcli command, a powerful tool for network management on Linux:

nmcli dev show | grep 'IP4.DNS'

This command extracts and displays the DNS server information configured for your network interfaces.

Changing DNS Servers:
To modify the DNS server settings on your Linux system, you can use the nmcli command again. The following example demonstrates how to set a specific DNS server:

sudo nmcli con mod <connection-name> ipv4.dns <new-dns-server>
sudo systemctl restart NetworkManager

Replace <connection-name> with your actual connection name and <new-dns-server> with the desired DNS server.

Verifying DNS Changes:
After altering DNS server settings, it's crucial to verify the changes. Utilize the systemd-resolve command to confirm the new DNS configuration:

systemd-resolve --status

Ensure that the desired DNS server is listed under "DNS Servers."

Additional Examples:
For those seeking alternative methods, the resolv.conf file can also be edited manually:

sudo nano /etc/resolv.conf

Add the desired DNS server addresses, save the file, and restart the networking service.

In the dynamic landscape of Linux networking, understanding and managing DNS servers is a skill that empowers users to optimize their system's performance. The Linux DNS Server List is a valuable resource for users seeking to explore and manipulate DNS configurations. Whether viewing current settings or making changes, the commands and examples provided can guide users through the intricacies of DNS server management on Linux.