搭建dhcp服务器

搭建dhcp服务器使其能够给192.168.27.0网段和192.168.136.0网段的主机分配ip地址，dhcp服务器可以给该网段的主机分配固定ip地址为192.168.27.8和192.168.136.168。

首先安装dhcp服务

[root@localhost ~]# mount /dev/sr0 /mnt
mount: /mnt: WARNING: device write-protected, mounted read-only.
[root@localhost ~]# yum install dhcp-server -y

然后编写配置文件

[root@localhost ~]# vim /etc/dhcp/dhcpd.conf
option domain-name "example.org";
option domain-name-servers 192.168.136.2;

default-lease-time 600;
max-lease-time 7200;
ddns-update-style none;
ignore client-updates;

subnet 192.168.136.0 netmask 255.255.255.0{
        range 192.168.136.100 192.168.136.200;
}
subnet 192.168.27.0 netmask 255.255.255.0{
        range 192.168.27.10 192.168.27.20;
}

host nat{
        hardware ethernet 00:0c:29:77:f8:75;
        fixed-address 192.168.136.168;
}
host only{
        hardware ethernet 00:0c:29:77:f8:7f;
        fixed-address 192.168.27.8;
}

然后关闭防火墙，重启服务

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl restart dhcpd

最后到客户端去获取地址

[root@localhost ~]# dhclient

如果获取不到要up一下连接，就能成功获取到地址