centos 7.6 ——配置 DNS主从服务器

centos 7.6 ——配置 DNS主从服务器

设置一：主服务器配置

1. 安装bind，修改主配置文件

[root@localhost ttyy]# yum -y install bind
[root@localhost ttyy]# rpm -qc bind
/etc/logrotate.d/named
/etc/named.conf
/etc/named.iscdlv.key
/etc/named.rfc1912.zones
/etc/named.root.key
/etc/rndc.conf
/etc/rndc.key
/etc/sysconfig/named
/var/named/named.ca
/var/named/named.empty
/var/named/named.localhost
/var/named/named.loopback
[root@localhost ttyy]# vi /etc/named.conf 

2. 主服务器的区域配置文件

[root@localhost ttyy]# vi /etc/named.rfc1912.zones 

[root@localhost named]# ll
总用量 16
drwxrwx---. 2 named named    6 6月   1 23:26 data
drwxrwx---. 2 named named    6 6月   1 23:26 dynamic
-rw-r-----. 1 root  named 2253 4月   5 2018 named.ca
-rw-r-----. 1 root  named  152 12月 15 2009 named.empty
-rw-r-----. 1 root  named  152 6月  21 2007 named.localhost
-rw-r-----. 1 root  named  168 12月 15 2009 named.loopback
drwxrwx---. 2 named named    6 6月   1 23:26 slaves
[root@localhost named]# cp -p named.localhost ttyy.com.zone
[root@localhost named]# ll

[root@localhost named]# vi ttyy.com.zone 
[root@localhost named]# systemctl restart named
[root@localhost named]# ls slaves/
[root@localhost named]# echo "servename 192.168.75.137" > /etc/resolv.conf
[root@localhost named]# cat /etc/resolv.conf
servename 192.168.75.137
[root@localhost named]# host www.ttyy.com
www.ttyy.com has address 7.7.7.7

设置二：从服务器配置

1. 安装bind，修改从配置文件

[root@localhost ttyy]# yum -y install bind
[root@localhost ttyy]# rpm -qc bind
/etc/logrotate.d/named
/etc/named.conf
/etc/named.iscdlv.key
/etc/named.rfc1912.zones
/etc/named.root.key
/etc/rndc.conf
/etc/rndc.key
/etc/sysconfig/named
/var/named/named.ca
/var/named/named.empty
/var/named/named.localhost
/var/named/named.loopback
[root@localhost ttyy]# vi /etc/named.conf 

2. 安装bind，修改从区域配置文件

3. 主从服务器关闭防火墙、核心防护、重启named服务

主服务器重启named 服务（关闭防火墙、核心防护）
[root@localhost named]# systemctl stop firewalld
[root@localhost named]#systemctl disable firewalld
[root@localhost named]#setenforce 0
[root@localhost named]# systemctl start named
[root@localhost named]# systemctl restart named

从服务器重启named服务
[root@localhost named]# systemctl start named
[root@localhost named]# systemctl restart named
[root@localhost slaves]# ls
ttyy.com.zone

注意事项

主服务器和从服务器的主配置文件，监听端口为any，允许所有网段访问any.