Detailed configuration of Dhcp servers in CentOS

Detailed configuration of Dhcp servers in CentOS

1. Install dhcp

Yum install dhcp. x86_64

Ii. Modify the dhcp master configuration file

Vim/etc/dhcp/dhcpd. conf

Dns-update-style interim; # indicates the dynamic information update mode of the dhcp server and dns server. This line must have a dhcp server before it can be started.

Ignore client-updates; # ignore client updates

Subnet 192.168.1.0 netmask 255.255.255.0 {# indicates that the IP address I allocated is in the CIDR block of 192.168.1.0 and the subnet mask of 255.255.255.0.

Option routers 192.168.1.1; # The Gateway assigned to the client is 192.168.1.1

Option nis-domain ning.com; # assign the nis domain to the client

Option domain-name ning.com; # domain name for the client

Option subnet-mask subnet mask 255.255.0; # assign the subnet mask of the IP address

Option ntp-servers 192.168.1.22; # Send it to the ntp server of the Client

Option netbios-name-servers 192.168.1.22; # server address

Option domain-name-servers 192.168.1.21; # default domain name Service IP Address

Option time-offset-18000; # time offset

Range dynamic-bootp 192.168.1.50 192.168.1.254; # assigned IP address range

Default-lease-time 21600; # default lease time

Max-lease-time 43200; # maximum lease time

Sometimes we need to configure a fixed IP address for a machine, and the following configuration options meet this requirement:

Host ning {
Hardware ethernet 52: 54: 00: fa: bb: 29;
Fixed-address 192.168.1.66;

}

}

Client: dhclint or ifdown eth0; ifup eth0;