DNS服务部署

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。

关闭防火墙

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0

数据解析查询

正向解析

配置文件

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

options {
        listen-on port 53 { 192.168.75.130;};
        directory       "/var/named";
        allow-query { any; };
};
zone "openlab.com" IN {
        type master;
        file "named.openlab.com";
};


[root@localhost ~]# vim /var/named/named.openlab.com

$TTL 1D
@       IN      SOA     @       wx.qq.com (
                                                2024110100
                                                1D
                                                2H
                                                5H
                                                1D )
        IN      NS      ns.openlab.com.
ns      IN      A       192.168.75.130

www     IN      A       192.168.75.111
wwww    IN      CNAME   www

反向解析

vim /etc/named.conf

options {
        listen-on port 53 { 192.168.75.130;};
        directory       "/var/named";
        allow-query { any; };
};
zone "openlab.com" IN {
        type master;
        file "named.openlab.com";
};
zone "75.168.192.in-addr.arpa" IN {
        type master;
        file "named.192";
        allow-update { none; };
};

进行归档复制并改名

[root@localhost ~]# cp -a /var/named/named.localhost  /var/named/named.192

配置文件

[root@localhost ~]# vim /var/named/named.192

$TTL 1D
@       IN SOA  @ rname.invalid. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      ns.openlab.com.
130     PTR     ns.openlab.com.

111     PTR     www.openlab.com.                                       

重启服务并查看结果

[root@localhost ~]# systemctl restart named

 

修改DNS服务器地址

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

# Generated by NetworkManager
search localdomain
nameserver 192.168.75.130

查询结果

通过从服务器进行数据备份

挂载并下载所需服务

[root@localhost ~]# mount /dev/sr0 /mnt
[root@localhost ~]# yum  install  bind  -y

从服务器配置文件

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

options {
        listen-on port 53 { 192.168.75.134; };
        directory       "/var/named/slaves";
        allow-query     { any; };
};
zone "openlab.com" IN{
        type slave;
        file "named.openlab.com";
        masters {192.168.75.130; };
};
zone "75.168.192.in-addr.arpa" IN{
        type slave;
        file "named.192";
        masters {192.168.75.130; };
};

修改主服务器配置文件

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

options {
        listen-on port 53 { 192.168.75.130;};
        directory       "/var/named";
        allow-query { any; };
        allow-transfer{ 192.168.75.134; };
};
zone "openlab.com" IN {
        type master;
        file "named.openlab.com";
};
zone "75.168.192.in-addr.arpa" IN {
        type master;
        file "named.192";
        allow-update { none; };
};

完全区域传输 

[root@localhost ~]# watch ls -l /var/named/slaves/
[root@localhost ~]# systemctl restart named

增量传送 

修改主服务器配置文件

[root@localhost ~]# vim /var/named/named.openlab.com 

$TTL 1D
@       IN      SOA     @       wx.qq.com (
                                                2024110101
                                                1M      
                                                1M
                                                1M
                                                1M )
        IN      NS      ns.openlab.com.
        IN      NS      slave.openlab.com.
ns      IN      A       192.168.75.130
slave   IN      A       192.168.75.134

www     IN      A       192.168.75.111
ftp     IN      A       192.168.75.100
wwww    IN      CNAME   www


[root@localhost ~]# systemctl restart named

测试