環境要求爲減輕主DNS的資源，搭建從DNS服務器獲取資源
[root@localhost ~]# vi /etc/named.conf
options {
listen-on port 53 { 192.168.216.151; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { any; }; #允許任意來訪地址
allow-transfer { IP;}; #從DNS服務器IP
recursion yes;
[root@localhost ~]# vi/etc/named.rfc1912.zones
zone "baidu.com." IN {
type master;
file "baidu.localhost";
allow-update { none; };
};
zone "216.168.192.in-addr.arpa"IN {
type master;
file "baidu.empty";
allow-update { none; };
};
[root@localhost ~]# cd /var/named/
[root@localhost named]# cp -p named.localhostbaidu.localhost
[root@localhost named]# cp -p named.emptybaidu.empty
[root@localhost named]# ls -l
總用量 36
-rw-r-----. 1 root named 152 12月 15 2009 baidu.empty
-rw-r-----. 1 root named 152 6月 21 2007 baidu.localhostDNS分離搭建
[root@localhost named]# vi baidu.localhost
$TTL 1D
@ IN SOA baidu.com. rname.invalid.(
0 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS dns.baidu.com.
MX 5 mail.baidu.com.
dns A 192.168.216.151
www A 192.168.216.152
mail A 192.168.216.153從DNS服務器配置文件：
[root@localhost ~]# vi /etc/named.conf
options {
listen-on port 53 { 從DNS的IP地址; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { 從DNS的ip; };配置從DNS區域文件
[root@localhost ~]# vi/etc/named.rfc1912.zones
zone "baidu.com" IN {
type master;
file "baidu.localhost";
allow-update { none; };
masters {主DNS的ip; };
};
zone "反網絡.in-addr.arpa"IN {
type master;
file "baidu.empty";
allow-update { none; };
masters { 主DNSip;}; #新加如的內容
};