redhat5 DNS

redhat 5的DNS配置与redhat 4有很多不同

须安装三个软件：
bind  caching-nameserver  bind-chroot
redhat5安装caching nameserver后会在/var/named/chroot/etc下产生一个

named.rfc1912.zones 为原始配置文件

 cp       /var/named/chroot/etc/named.rfc1912.zones
           /var/named/chroot/etc/named.conf

配置named.conf

选项，必须，不然会提示找不到文件
options{
        directory "/var/named/";
        dump-file "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
};
include "/etc/rndc.key";

在named.conf增加:

zone "example.com" IN {
        type master;
        file "example.com.zone";
        allow-update { none; };
};

zone "0.168.192.in-addr.arpa" IN {
        type master;
        file "192.168.0.arpa";
        allow-update { none; };
};

复制,做为正解
   cp       /var/named/chroot/var/named/localhost.zone         

             /var/named/chroot/var/named/example.com.zone

正解的内容如下（example.com.zone）：
$TTL    86400
example.com.    IN SOA  dns.example.com.  root.example.com (
                                        42              ; serial (d.

adams)
                                        3H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        1D )            ; minimum

example.com.               IN NS              dns.example.com.
dns                               IN A               192.168.0.124
[url]www.example.com[/url] .      IN A               192.168.0.124
mail.example.com.         IN A               192.168.0.125
mail2.example.com.       IN A               192.168.0.126

bbs                               IN   CNAME  www

example.com.               IN   MX  10 mail.example.com.
example.com.                IN   MX  11 mail2.example.com.

复制，做为反解
cp /var/named/chroot/var/named/named.local
   /var/named/chroot/var/named/192.168.0.arpa
反解的内容如下(192.168.0.arpa)：
$TTL    86400
0.168.192.in-addr.arpa.  IN      SOA    dns.example.com.

root.example.com.  (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
0.168.192.in-addr.arpa.              IN      NS      dns.example.com.
124.0.168.192.in-addr.arpa.       IN      PTR     dns.example.com.
124                                            IN      PTR     [url]www.example.com[/url] .
125                                            IN      PTR     mail.example.com.
126                                            IN      PTR     mail2.example.com.

 

[root@localhost /]# /etc/init.d/named stop
停止 named：                                               [确定]
[root@localhost /]# /etc/init.d/named start
启动 named：                                               [确定]

我把iptables停了

service iptables stop

设置dns   // （必须）
 vi /etc/resolv.conf     
           search example.com.
           nameserver 192.168.0.2

配置网卡
  vi /etc/sysconfig/network-scripts/ifcfg-eth0
重新启动网卡
 service network restart

使用nslookup 进行检验