Linux自建DNS

[root@localhost ~]# nslookup www.beidu.com
Server:   192.168.31.1
Address:  192.168.31.1#53
 
Non-authoritative answer:
Name: www.beidu.com
Address: 184.154.126.180
 
[root@localhost ~]# 
 
# 安装 bind - 10.4.7.11
[root@localhost ~]# yum install bind -y
 
# 查看版本
[root@localhost ~]# rpm -qa bind
bind-9.11.4-26.P2.el7_9.9.x86_64
 
# 1-主配置
[root@localhost ~]# vim /etc/named.conf 
 
# 修改的地方
listen-on port 53 { 192.168.31.31; };
allow-query     { any; };
# 添加了一个网关地址
forwarders      { 192.168.31.1 };
# 使用yes 采用递归
recursion yes;
# 这两个设置成 no
dnssec-enable no;
dnssec-validation no;
 
 
# 检查配置是否有问题
[root@localhost ~]# named-checkconf
 
# 2-配置区域文件
[root@localhost named]# vim /etc/named.rfc1912.zones 
 
# 配置两个域，添加如下内容
zone "host.com" IN {
        type master;
        file "host.com.zone";
        allow-update { none; };
};
zone "od.com" IN {
        type master;
        file "od.com.zone";
        allow-update { none; };
};
 
# 3-配置区域数据文件
[root@localhost ~]# cd /var/named/
 
[root@localhost named]# cp -a named.localhost host.com.zone
 
[root@localhost named]# vim host.com.zone 
$ORIGIN host.com.
$TTL 1D
@       IN SOA  dns.host.com. root.host.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      dns.host.com.
dns     A       192.168.31.31
HD-31   A       192.168.31.31
HD-32   A       192.168.31.218
HD-33   A       192.168.31.132
 
[root@localhost named]# cp -a host.com.zone od.com.zone
[root@localhost named]# vim od.com.zone 
$ORIGIN od.com.
$TTL 1D
@       IN SOA  dns.od.com. root.host.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      dns.od.com.
dns     A       192.168.31.31
 
# 检查配置文件是否有问题
[root@localhost named]# named-checkconf
 
# 启动
[root@localhost named]# systemctl start named
 
# 查看 53 端口
[root@localhost named]# netstat -luntp|grep 53
tcp        0      0 192.168.31.31:53        0.0.0.0:*               LISTEN      2334/named          
tcp        0      0 192.168.122.1:53        0.0.0.0:*               LISTEN      1369/dnsmasq        
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      2334/named          
tcp6       0      0 ::1:53                  :::*                    LISTEN      2334/named          
tcp6       0      0 ::1:953                 :::*                    LISTEN      2334/named          
udp        0      0 192.168.31.31:53        0.0.0.0:*                           2334/named          
udp        0      0 192.168.122.1:53        0.0.0.0:*                           1369/dnsmasq        
udp        0      0 0.0.0.0:57534           0.0.0.0:*                           576/avahi-daemon: r 
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           576/avahi-daemon: r 
udp6       0      0 ::1:53                  :::*                                2334/named 
 
# 检查主机域
[root@localhost named]# dig -t hostname.host.com @192.168.31.31 +short
 
# 要linxu 和Windows 客户端都可以使用。
修改DNS 为（主域IP）
 
# Windows 的首选DNS 写主域的IP
[root@localhost network-scripts]# cd /etc/sysconfig/network-scripts
[root@localhost network-scripts]# vim ifcfg-ens33 
GATEWAY=192.168.31.1
DNS1=192.168.31.31
DNS2=192.168.31.1
 
[root@localhost network-scripts]# systemctl restart network
 
[root@localhost network-scripts]# cat /etc/resolv.conf 
# Generated by NetworkManager
nameserver 192.168.31.31
nameserver 192.168.31.1
 
 
# ping 通本机 添加如下（主域+其他域都加）
vim /etc/resolv.conf
search host.com