DNS服务器和DNS从属关系部署

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5.1、装服务包

Yum –y installbind-*

[root@localhostyum.repos.d]# rpm -qa | grep bind

bind-libs-9.3.6-4.P1.el5_4.2

ypbind-1.19-12.el5

bind-devel-9.3.6-4.P1.el5_4.2

bind-libbind-devel-9.3.6-4.P1.el5_4.2

bind-9.3.6-4.P1.el5_4.2

bind-utils-9.3.6-4.P1.el5_4.2

bind-chroot-9.3.6-4.P1.el5_4.2

bind-sdb-9.3.6-4.P1.el5_4.2

5.2、案例

DNS有两大要素，一是主配置文件，而是zone文件，下面举例，两个不同域的人员进行互发邮件，做出解析

5.2.1、修改主DNS主配置文件

192.168.10.2------------------192.168.10.1—192.168.20.1--------------------192.168.20.2

Vim /var/named/chroot/etc/named.conf

options [

directory “/var/named”;

];

zone “vfast.com” IN {

type master;

file “vfast.com.zone”;

allow-transfer {192.168.20.2};

};

zone “benet.com” IN {

type master;

file “vfast.com.zone”;

allow-transfer {192.168.20.2};

};

5.2.2、修改zone文件

Cp/usr/share/doc/bind-9.3.6/sample/var/named/localhost.zone/var/named/chroot/var/named/vfast.com.zome

$TTL 86400

@ IN SOA @ root .vfast.com. (

42 ; serial (d. adams)

3H ; refresh

15M ; retry

1W ; expiry

1D) ; minimum

IN NS mail.vfast.com.;定义一个NS

mail.vfast.com. IN A 192.168.10.2;邮件服务器的ip

vfast.com. IN MX 9 mail.vfast.com.

mail.benet.com. IN A 192.168.20.2;邮件服务器的ip

benet.com. IN MX 10 mail.benet.com.

ftp.vfast.com IN A 192.168.10.2 ftp的域名

www.vfast.com INA 192.168.10.2网站域名

5.2.3、构建从DNS服务器

5.2.3.1、构建从DNS服务器的主配置文件

Vim /var/named/chroot/etc/named.conf

options [

directory “/var/named”;

];

zone “vfast.com” IN {

type slave;

master{192.168.10.2};

file “vfast.com.zone”;

};

zone “benet.com” IN {

type slave;

master{192.168.10.2};

file “vfast.com.zone”;

};

5.2.3.2、构建从DNS的zone文件

cp /usr/share/doc/bind-9.3.6/sample/var/named/localhost.zone/var/named/chroot/var/named/vfast.com.zome

$TTL 86400

@ IN SOA @ root .vfast.com. (

42 ; serial (d. adams)

3H ; refresh

15M ; retry

1W ; expiry

1D) ; minimum

IN NS mail.vfast.com.;定义一个NS

mail.vfast.com. IN A 192.168.10.2;邮件服务器的ip

vfast.com. IN MX 9 mail.vfast.com.

mail.benet.com. IN A 192.168.20.2;邮件服务器的ip

benet.com. IN MX 10 mail.benet.com.

ftp.vfast.com. IN A 192.168.10.2 ftp的域名

ftp2.vfast.com INCNAME 192.168.10.2.

www.vfast.com INA 192.168.10.2网站域名

5.3、启动DNS服务

/etc/init.d/namedstart

客户端测试

Vim/etc/resolv.conf

Nameserver=192.168.10.1

Hostmail.vfast.com或nslookup mail.vfast.com

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