Set DNS in Linux

[Problem description]
In Linux, If you ping a domain name, the following conditions occur:

# Ping www.taobao.com

Ping: Unknown host www.taobao.com

 

This is because the system has not set DNS. In this scenario, any domain name-based operations may fail.

 

 

[Solution]

1. View DNS settings

# Cat/etc/resolv. conf

If you can see nameserver XXX. XXX

It indicates that the DNS has been set. In this case, you must consider whether to set the DNS pair.

 

2. Set DNS

Directly edit/etc/resolv. conf.

 

Add the correct DNS address.

 

As follows:

Nameserver XXX. XXX