有以下三种方法可以查询 DNS 服务器地址
- cat /etc/resolv.conf
- dig | grep SERVER
- nslookup www.baidu.com
# 要安装 bind-utils 才能使用 dig 和 nsloopup 命令
[root@master-node ~]# yum install bind-utils
......
[root@master-node ~]# cat /etc/resolv.conf
options timeout:2 attempts:3 rotate single-request-reopen
; generated by /usr/sbin/dhclient-script
nameserver 100.100.2.136
nameserver 100.100.2.138
[root@master-node ~]#
[root@master-node ~]# dig | grep SERVER
;; SERVER: 100.100.2.136#53(100.100.2.136)
[root@master-node ~]#
[root@master-node ~]# nslookup www.baidu.com
Server: 100.100.2.136
Address: 100.100.2.136#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
