option broadcast-address 192.168.0.255; #广播地址
option domain-name-servers 192.168.0.70; #DNS服务器
subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.40 192.168.0.59; #按以上规划40～49的范围
option subnet-mask 255.255.255.0; #子网掩码
option nis-domain "rac.com"; #域
option domain-name "rac.com";
}
[root@racst ~]# /etc/init.d/dhcpd start
正在启动 dhcpd： [确定]
[root@racst ~]# chkconfig --level 3 dhcpd on
至此DHCP服务配置成功！
3.配置DNS
[root@racst ~]# yum -y install bind-libs bind.x86_64 bind-utils.x86_64 bind-chroot.x86_64 #安装bind，以支持SCAN
[root@racst named]# cat /etc/named.conf |grep -v ^"//"|grep -v ^"$" #配置这个文件和笔者的相同（需要修改的笔者会注释出来）
options {
listen-on port 53 { any; }; #此处需要设置DNS所监听的本机IP，any是监听所有本机的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 { 192.168.0.0/24; }; #允许处理来自这段IP的DNS请求
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
################以下都是新添加的内容#################
zone "rac.com" IN {
type master;
file "rac.com.zone"; #此处的文件名省去了路径，应该是/var/named/rac.com.zone，正向解析区域。
allow-update { none; };
};
zone "0.168.192.in-addr.arpa" IN {
file "0.168.192.aptr"; #此处的文件名省去了路径，应该是/var/named/0.168.192.aptr，PTR方向解析区域。
allow-update { none; };
};
[root@racst ~]# cat /var/named/rac.com.zone #正向区域解析文件
$TTL 1D
@ IN SOA @ rname.invalid. (
0 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS @
A 192.168.0.69
AAAA ::1
racst A 192.168.0.70
rac1 A 192.168.0.71
rac2 A 192.168.0.72
rac3 A 192.168.0.73
cluster IN 1H A 192.168.0.69
IN 1H A 192.168.0.71
IN 1H A 192.168.0.72
IN 1H A 192.168.0.73
[root@racst ~]# cat /var/named/0.168.192.aptr #反向区域解析文件
$TTL 1D
@ IN SOA @ rname.invalid. (
0 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS rac.com.
A 192.168.0.69
AAAA ::1
70 PTR racst.rac.com.
71 PTR rac1.rac.com.
72 PTR rac2.rac.com.
73 PTR rac3.rac.com.
69 PTR cluster.rac.com.
71 PTR cluster.rac.com.
72 PTR cluster.rac.com.
73 PTR cluster.rac.com.
[root@racst ~]# rndc-confgen -r /dev/urandom -a
wrote key file "/etc/rndc.key"
[root@racst ~]# /etc/init.d/named start
启动 named： [确定]
[root@racst ~]# chkconfig --level 3 named on
DNS服务至此已经配置成功！