How to reserve IP Address in DHCP Server

Question

I install DHCP Server with https://help.ubuntu.com/lts/serverguide/dhcp.html

but I need to make reserve IP addresses for specific machine (192.168.1.XXX) and further to assign a name to each machine (machine 1 machine 2 machine 3).

My configuration file is as follows.

default-lease-time 600;
max-lease-time 7200;

subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.2 192.168.1.249;
option routers 192.168.88.250;
option domain-name-servers 192.168.1.x, 8.8.8.8;
option domain-name "mydomain.lan"; }

This is to replace fortinet service and add hostnames for each IP assigned and have control of them.

If there is any visual alternative (via web) to manage what I need, would be helpful.

Answer 1

在此示例中，DHCP 服务器 IP 地址保留将使用 NIC 的 MAC 地址。您需要知道 MAC 地址才能将其添加到 DHCP 配置文件中。（我将在示例中使用虚拟 MAC 地址和 IP 地址）。

要查找 MAC 地址，请使用ifconfig，并查找HWaddr条目

为此，只需按键盘上的Ctrl+ Alt+T即可打开终端。当它打开时，运行以下命令：

sudo nano /etc/dhcp3/dhcpd.conf

并添加以下几行：

host Accountant {
hardware ethernet 00:1F:6A:21:71:3F;
fixed-address 10.0.0.101;
}

保存文件并退出。

现在 DHCP 服务器将始终将 10.0.0.101 分配给 00:1F:6A:21:71:3F MAC 地址。

重新启动 DHCP

service dhcpd restart

或者

sudo /etc/init.d/dhcp3-server restart