Blog24@linux DNS配置（2）_动态域名解析_named 动态zone-优快云博客

本文链接：https://blog.youkuaiyun.com/MYS_Sunshine/article/details/78670727

本文主要介绍了在Linux环境中如何进行动态域名解析的配置，通过编辑`/etc/named.conf`和`/var/named/Sunshine.com.zone`文件来设置DNS。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

注：本实验初始环境为纯净

8. 动态域名解析

##服务器设置##

1）配置DNS

> vim /etc/named.conf

 listen-on port 53 { any; };
 allow-query     { any; };

> vim /etc/named.rfc1912.zones.inter

 zone "Sunshine.com" IN {
         type master;
         file "Sunshine.com.zone";
         allow-update { key Sunshine; };                                     
 };

> vim /var/named/Sunshine.com.zone

1 $TTL 1D

2 @       IN SOA   dns.Sunshine.com. root.Sunshine.com. (
  3                                         0       ; serial
  4                                         1D      ; refresh
  5                                         1H      ; retry
  6                                         1W      ; expire
  7                                         3H )    ; minimum
  8         NS      dns.Sunshine.com.
  9 dns     A       172.25.254.18

2）生成密钥，DNS加密文件
> cp /etc/rndc.key /etc/Sunshine.key -p
> dnssec-keygen -a HMAC-MD5 -b 128 -n HOST Sunshine
> cat Ksunshine.+157+07896.key
Sunshine. IN KEY 512 3 157 GTs=
> vim /etc/Sunshine.key

  1 key "Sunshine" {
  2         algorithm hmac-md5;
  3         secret "GTs=";                                                      
  4 };

> vim /etc/named.conf

42 include "/etc/Sunshine.key";

3）修改权限
> chmod 770 /var/named/

4)保证selinux打开named_write_master_zone 服务
> getsebool -a | grep named
named_tcp_bind_http_port --> off
named_write_master_zones --> off
> setsebool -P named_write_master_zones on

5)配置dhcp服务
> yum install dhcp -y
> cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf
> vim /etc/dhcp/dhcpd.conf

  7 option domain-name "Sunshine.com";
  8 option domain-name-servers 172.25.254.18;                                  
 
 32 subnet 172.25.254.0 netmask 255.255.255.0 {
 33   range 172.25.254.150 172.25.254.160;
 34   option routers 172.25.254.18;

注：删除27, 28及35行之后的内容

6）在dhcp中添加密钥文件
> vim /etc/dhcp/dhcpd.conf

 14 ddns-update-style interim;  ##取消注释                                                  
 35 key Sunshine {
 36          algorithm hmac-md5;
 37          secret "GTs=";
 38 };
 39 zone Sunshine.com. IN {
 40          primary 127.0.0.1;
 41          key Sunshine;                                                     
 42 };

##设置客户端##

1)设置dns为172.25.254.18

> vim /etc/resolv.conf
nameserver 172.25.254.18

2)设置主机名为 www.Sunshine.com
> hostnamectl set-hostname www.Sunshine.com

3)设置IP为自动获取
> vim /etc/sysconfig/network-script/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=dhcp
ONBOOT=yes

> systemctl restart network

测试：

在服务端

dig www.Sunshine.com