---
title: "Check and change the DNS Resolvers of your Linux Server uses"
slug: "check-and-change-the-dns-resolvers-of-your-linux-server-uses"
updated: 2026-07-07T04:45:13Z
published: 2026-07-07T04:45:13Z
canonical: "docs.serversaustralia.com.au/check-and-change-the-dns-resolvers-of-your-linux-server-uses"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.serversaustralia.com.au/llms.txt
> Use this file to discover all available pages before exploring further.

# Check and change the DNS Resolvers of your Linux Server uses

Below is a step-by-step guide on how to locate your DNS Server settings on a Linux server.

Systemd resolve hierarchy. This article assumes that **/etc/nsswitch.conf** is configured to refer to **/etc/resolv.conf**, which is the case by default on most distributions. This is defined in the **hosts:** line like the following example of an AlmaLinux Server:  

```custom
hosts:      files mdns4_minimal [NOTFOUND=return] dns myhostname
```

  

1. SSH into your server as the root user.
2. Edit the **/etc/resolv.conf** file using a tool such as vim or nano. In the below example, it is pointing at Indigo Legacy Resolvers, and needs to be changed.

```custom
nameserver 114.141.193.250
nameserver 114.141.200.250
```
3. Update it to point to the correct servers, and then save the file.

```custom
nameserver 221.121.130.3
nameserver 221.121.134.9
```
4. Your DNS resolvers will now be updated. If this is CentOS, you should have a quick look in your **/etc/sysconfig/network-scripts/ifcfg-*** files and see if they have **DNS1=** and DNS2= lines. If they do, you will need to also update those lines to the new Resolvers shown above.

```custom
DEVICE=enp1s0
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
PREFIX=24
IPADDR=10.0.1.27
GATEWAY=10.0.1.1
DNS1= 221.121.130.3
DNS2=221.121.134.9
```
5. Barring edge cases, you should now be correctly configured.