DNS服务部署

DNS服务部署

1.要求

1.搭建dns服务器能够对自定义的正向或者反向域完成数据解析查询。
2.配置从DNS服务器，对主dns服务器进行数据备份。

2.配置

主服务器：

1.安装BIND

[root@localhost xzy]# sudo dnf install bind bind-utils

2.配置正向区域

[root@localhost xzy]# vim /etc/named.conf 
zone "example.com" IN {type master;file "/var/named/example.com.db";allow-transfer { 192.168.194.130; };  # 允许从服务器区域传输
};
[root@localhost xzy]# touch /var/named/example.com.db
[root@localhost xzy]# vim /var/named/example.com.db 
$TTL 86400
@   IN  SOA ns1.example.com. admin.example.com. (2024110301 ; Serial3600       ; Refresh1800       ; Retry604800     ; Expire86400 )    ; Minimum
;
@       IN  NS      ns1.example.com.
ns1     IN  A       192.168.194.128
www     IN  A       192.168.194.129

3.配置反向区域

添加反向区域信息

[root@localhost xzy]# vim /etc/named.conf 
zone "194.168.192.in-addr.arpa" IN {type master;file "/var/named/192.168.194.db";allow-transfer { 192.168.194.130; };  # 允许从服务器区域传输
};

创建反向区域文件

[root@localhost xzy]# touch /var/named/192.168.194.db
[root@localhost xzy]# vim /var/named/192.168.194.db 
$TTL 86400
@   IN  SOA ns1.example.com. admin.example.com. (2024110301 ; Serial3600       ; Refresh1800       ; Retry604800     ; Expire86400 )    ; Minimum
;
@       IN  NS      ns1.example.com.
128     IN  PTR     ns1.example.com.
129     IN  PTR     www.example.com.

启动服务
sudo systemctl start named
sudo systemctl enable named
sudo firewall-cmd --add-service=dns --permanent
sudo firewall-cmd --reload

从DNS服务器配置

1.安装BIND

sudo dnf install bind bind-utils

2.配置从区域

在/etc/named.conf中添加配置[root@localhost xzy]# vim /etc/named.conf 
zone "example.com" IN {type slave;file "slaves/example.com.db";masters { 192.168.194.128; };
};zone "194.168.192.in-addr.arpa" IN {type slave;file "slaves/192.168.194.db";masters { 192.168.194.128; };
};

启动服务sudo systemctl start named
sudo systemctl enable named
sudo firewall-cmd --add-service=dns --permanent
sudo firewall-cmd --reload

验证

[root@localhost xzy]# dig xzy example.com