Configure DHCP (Dynamic Host Configuration Protocol) Server in RHEL/Centos 7

### Install DHCP Server

[root@testos ~]# yum -y install dhcp

### Configure DHCP Server

[root@testos ~]# vi /etc/dhcp/dhcpd.conf
# create new
# specify domain name
option domain-name     "unixtest.com";
# specify name server's hostname or IP address
option domain-name-servers     testos.unixtest.com;
# default lease time
default-lease-time 600;
# max lease time
max-lease-time 7200;
# this DHCP server to be declared valid
authoritative;
# specify network address and subnet mask
subnet 10.0.0.0 netmask 255.255.255.0 {
    # specify the range of lease IP address
    range dynamic-bootp 10.0.0.200 10.0.0.254;
    # specify broadcast address
    option broadcast-address 10.0.0.255;
    # specify default gateway
    option routers 10.0.0.1;
}