DHCP的全称 Dynamic Host Configuration Protocol
安装RPM包：
yum install dhcp
[root@test ~]# vi /etc/dhcp/dhcpd.conf
也可直接copy模板，修改一下即可：
[root@test ~]# cp -rf /usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample /etc/dhcp/dhcpd.conf
[root@test ~]# cat /etc/dhcp/dhcpd.conf
#支持DDNS
ddns-update-style interim;
#忽略DDNS更新
ignore client-updates;
# A slightly different configuration for an internal subnet.
subnet 192.168.2.0 netmask 255.255.255.0 { #声明作用域
option routers 192.168.2.201; #网关
option subnet-mask 255.255.255.0; #网关掩码
option domain-name-servers 192.168.2.201; #给客户机分配的DNS
option domain-name "test"; #DNS NAME
range 192.168.2.100 192.168.2.200; #供自动获取的网段
default-lease-time 600;
max-lease-time 7200;
#固定IP分配
host RAC-2 { #需要分配固定IP的主机名
hardware ethernet 00:0c:29:83:b5:dc; #需要分配固定IP的服务器MAC地址
fixed-address 192.168.2.202; #需要分配的固定IP
}
}
[root@test ~]# cat /etc/sysconfig/dhcpd
# Command line options here
DHCPDARGS=eth0 #dhcpd启动时所带的网卡
重启服务，即可使用
[root@test ~]# service dhcpd restart
