使用bind搭建主辅DNS服务器（已测试）

搭建LINUX下的DNS多域解析主辅服务器
内核版本： 2.6.18-128.el5
DNS主服务器IP:192.168.10.231
DNS辅服务器IP:192.168.10.34

1.2台服务器同时都安装bind相关软件包
yum -y install bind* caching-nameserver

2.修改主配置文件
cd /var/named/chroot/etc
cp -p named.caching-nameserver.conf named.conf
cp -p named.rfc1912.zones named.rfc1912.zones.bak (备份此文件，防止修改出错)

vim named.conf
修改此文件中127.0.0.1为any
修改localhost为any
保存退出

vim named.rfc1912.zones
如下例子
// named.rfc1912.zones:
//
// Provided by Red Hat caching-nameserver package
//
// ISC BIND named zone configuration for zones recommended by
// RFC 1912 section 4.1 : localhost TLDs and address zones
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
zone "." IN {
type hint;
file "named.ca";
};
zone "baidu.com" IN {
type master;
file "baidu.com.zone";
allow-update { none; };
allow-transfer { 192.168.10.34; }; (这行是添加辅助服务器的IP,有多台辅助可以添加多个IP)
};
zone "baidu.net" IN {
type master;
file "baidu.net.zone";
allow-update { none; };
allow-transfer { 192.168.10.34; };
};
zone "10.168.192.in-addr.arpa" IN {
type master;
file "10.168.192.in-addr.local";
allow-update { none; };
allow-transfer { 192.168.10.34; };
};

保存退出

cd ../var/named
cp -p localdomain.zone baidu.com.zone
cp -p localdomain.zone baidu.net.zone
cp -p named.local 10.168.192.in-addr.local
vim baidu.com.zone

$TTL 6 （这里我让缓存为6秒钟，这里就是做快速解析生效的重要地方）
@ IN SOA localhost root (
2009110404 ; Serial (YYMMDDSN)
6 ; Refresh
60 ; Retry
4W ; Expiry
6 ) ; Minimum
IN NS baidu.com
IN MX 10 mail.baidu.com.
IN A 192.168.10.125
mail IN A 192.168.10.125
qq IN A 192.168.10.40

保存
用同样的方法编辑baidu.net.zone文件
再编辑反向解析文件
vim 10.168.192.in-addr.local

$TTL 6
@ IN SOA localhost. root.localhost. (
2009110302 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS baidu.com.
IN NS baidu.net.
125 IN PTR www.baidu.com
125 IN PTR mail.baidu.com
231 IN PTR www.baidu.net.
40 IN PTR mail.baidu.net.

保存完毕
启动bind
service named start
主DNS服务器配置完毕

编辑配置文件
vim named.rfc1912.zones

// named.rfc1912.zones:
//
// Provided by Red Hat caching-nameserver package
//
// ISC BIND named zone configuration for zones recommended by
// RFC 1912 section 4.1 : localhost TLDs and address zones
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
zone "." IN {
type hint;
file "named.ca";
};
zone "baidu.com" IN {
type slave;
file "slaves/baidu.com.zone";
masters { 192.168.10.231; };
};
zone "baidu.net" IN {
type slave;
file "slaves/baidu.net.zone";
masters { 192.168.10.231; };
};
zone "10.168.192.in-addr.arpa" IN {
type slave;
file "slaves/10.168.192.in-addr.local";
masters { 192.168.10.231; };
};

启动bind
如果发现启动不成功，请检查bind的权限
cd /var/named/chroot/var/named/slaves
chmod 775 /var/named/chroot/var/named/slaves
chown named.named /var/named/chroot/var/named/slaves
查看slaves文件夹下是否有baidu.com.zone文件了，他会自动下载下来