1 # cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example  /etc/dhcp/dhcpd.conf 

 1 vi /etc/dhcpd.conf
 2 ddns-update-style interim;
 3 ignore client-updates;
 4 subnet 192.168.0.0 netmask 255.255.255.0 {
 5 # --- default gateway
 6         option routers                  192.168.0.1;
 7         option subnet-mask              255.255.255.0;
 8         option nis-domain               "domain.org";
 9         option domain-name              "domain.org";                            #域名
10         option domain-name-servers      192.168.1.1;
11         option time-offset              -18000; # Eastern Standard Time
12 #       option ntp-servers              192.168.1.1;
13 #       option netbios-name-servers     192.168.1.1;
14 # --- Selects point-to-point node (default is hybrid). Don't change this unless
15 # -- you understand Netbios very well
16 #       option netbios-node-type 2;
17         range dynamic-bootp 192.168.0.128 192.168.0.254;
18         default-lease-time 21600;
19         max-lease-time 43200;
20         # we want the nameserver to appear at a fixed address
21         host ns {
22                 next-server marvin.redhat.com;
23                 hardware ethernet 12:34:56:78:AB:CD;
24                 fixed-address 207.175.42.254;
25         }
26 }
27
28 #修改为
29 ddns-update-style none;                                                 #关闭dhcp服务器和dns服务器内部更新自动协商
30 ignore client-updates;
31 subnet 172.16.10.0 netmask 255.255.255.0 {
32         option routers                  172.16.10.2;                       #网关
33         option subnet-mask              255.255.255.0;                     #子网掩码
34         option domain-name-servers      202.103.24.68,202.103.0.117;       #DNS服务器地址
35         option time-offset              -18000; # Eastern Standard Time
36 # --- Selects point-to-point node (default is hybrid). Don't change this unless
37 # -- you understand Netbios very well
38 #       option netbios-node-type 2;
39         range dynamic-bootp 172.16.10.100 172.16.10.200;                   #地址池
40         default-lease-time 21600;                                          #默认租约时间（秒）
41         max-lease-time 43200;                                                                                  #最大租约时间（秒）
42         # we want the nameserver to appear at a fixed address
43         host JTWD01-28 {
44                 next-server marvin.redhat.com;
45                 hardware ethernet 00:1E:90:17:CC:67;                       #根据主机网卡mac地址分配IP地址
46                 fixed-address 172.16.10.88;                                #分配的固定IP地址
47         }
48 }

1 # systemctl restart dhcpd