DNS域名分离解析

1. 首先需要准备两张网卡

2.修改第二块网卡的IP地址等配置

这里我们用172.16.1.1做测试

#进入到网卡配置界面

vim /etc/sysconfig/network-scripts/ifcfg-eno33554968

修改项：

BOOTPROTO="static"

IPADDR=172.16.1.1
NETMASK=255.255.255.0

3.搭建DNS服务

#安装bind软件包
yum -y install bind

#修改指定DNS地址文件
vim /etc/resolv.conf
nameserver 192.168.200.111
nameserver 192.168.200.112
nameserver 192.168.200.113

#修改hosts文件
vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.200.111 ns1.crushlinux.com
192.168.200.112 ns2.crushlinux.com
192.168.200.113 www.crushlinux.com

#修改主配置文件（实现分离解析）
vim /etc/named.conf
options {
directory "/var/named";
};

view "LAN" {
match-clients { 192.168.200.0/24; };
zone "crushlinux.com" IN {
type master;
file "crushlinux.zheng.lan";
};
};

view "WAN" {
match-clients { any; };
zone "crushlinux.com" IN {
type master;
file "crushlinux.zheng.wan";
};
};

#修改正向解析文件
vim /var/named/crushlinux.zheng.lan
\$TTL    86400
@       IN      SOA crushlinux.com    admin.crushlinux.com.        (
                123456
                3H
                15M
                1W
                1D
)
        IN      NS      ns1.crushlinux.com.
        IN      NS      ns2.crushlinux.com.
        IN      NS      www.crushlinux.com.
        IN      MX 10   mail.crushlinux.com.
ns1     IN      A       192.168.200.111
ns2     IN      A       192.168.200.112
www     IN      A       192.168.200.113
ftp     IN      A       192.168.200.114
mail    IN      A       192.168.200.115

#启动服务

systemctl restart named
systemctl enable named

5.给解析文件添加组权限

chgrp named crushlinux.zheng.wan

#重启服务

systemctl restart named

6.使用测试机进行测试

分别使用两个不同的网段

NAT网段

#设置IP地址和网关