centos cannot access external network

Problem:

centos7 virtual machine cannot access the external network

[root@localhost ~]# curl www.baidu.com curl: (6) Could not resolve host: www.baidu.com; 未知的错误

(Recommended tutorial:centos usage tutorial)

Solution:

[root@localhost ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 100 0 0 ens192 192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 ens192 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

Then edit the resolv.conf file and add the following content:

[root@localhost ~]# vim /etc/resolv.conf

# Generated by NetworkManager nameserver 218.30.19.50 nameserver 8.8.8.8 ~ ~

Add route:

[root@localhost ~]# route add default gw 192.168.1.1

Test again Can you access Baidu?

[root@localhost ~]# curl www.baidu.com   
  
 
 
 
 
 
  
 
       
 
 
 
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OK, you can access it normally.

Recommended related video tutorials:linux video tutorial

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