Linux DNS配置

1、查看DNS配置：

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

# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

[root@localhost ~]#

2、编辑DNS配置，新增DNS 8.8.8.8

[root@localhost ~]# vi /etc/resolv.conf
# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
nameservers 8.8.8.8
[root@localhost ~]#

3、nslookup 测试DNS域名解析

 

[root@localhost ~]# nslookup www.baidu.com
Server: 8.8.8.8
Address: 8.8.8.8#53

Non-authoritative answer:
www.baidu.com canonical name = www.a.shifen.com.
www.a.shifen.com canonical name = www.wshifen.com.
Name: www.wshifen.com
Address: 103.235.46.39

[root@localhost ~]#

网络通了