linux系統的dhcp服務配置

在用戶端通過廣播方式發送資料包，尋找dhcp伺服器，dhcp伺服器收到用戶端的資料包，從ip池選擇一個尚未配置設定的ip給用戶端，當有多台伺服器向其發送ip時，用戶端随機選擇，用戶端以廣播形式宣告他所使用的ip，其他伺服器接收後，釋放欲配置設定給他的ip

在desktop裡

vim /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

BOOTPROTO=none

IPADDR0=172.25.254.102

PREFIX0=24

IPV6INIT=no

ONBOOT=yes

TYPE=Ethernet

USERCTL=yes

PEERDNS=yes

PERSISTENT_DHCLIENT=1

linux系統的dhcp服務配置

[[email protected] ~]# systemctl restart network

[[email protected] ~]# yum search dhcp #查找dhcp軟體

Loaded plugins: langpacks

============================== N/S matched:dhcp===============================

dhcp-common.x86_64 : Common files used by ISC dhcp client and server

dhcp-libs.i686 : Shared libraries used by ISC dhcp client and server

dhcp-libs.x86_64 : Shared libraries used by ISC dhcp client and server

dhclient.x86_64 : Provides the ISC DHCP client daemon and dhclient-script

dhcp.x86_64 : Dynamic host configuration protocol software

dnsmasq.x86_64 : A lightweight DHCP/caching DNS server

Name and summary matches only, use "search all" for everything.

[[email protected] ~]# yum install dhcp.x86_64 -y #下載下傳dhcp軟體

complete!

[[email protected] ~]# cd /etc/dhcp/

[[email protected] dhcp]# ls

dhclient.d dhcpd6.conf dhcpd.conf

[[email protected] dhcp]# vim dhcpd.conf

複制檔案名

cp /usr/share/doc/dhcp*/dhcpd.conf.example /etc/dhcp/dhcpd.conf

[[email protected] dhcp]# vim dhcpd.conf #編寫配置檔案dhcp的規則

7 option domain-name "example.com"; #域名

8 option domain-name-servers 114.114.114.114; #客戶主機獲得dns

10 default-lease-time 600; #預設租約期

11 max-lease-time 7200; #最長租約期

27 #27.28删除

28 # This is a very basic subnet declaration.

30 subnet 172.25.254.0 netmask 255.255.255.0 { #subnet代表網絡位，netmask代表子網子網路遮罩

31 range 172.25.254.200 172.25.254.210; #range代表位址池，即可擷取ip的範圍

32 option routers 172.25.254.250; #客戶主機可擷取的網關

33 }

34 #34行以後删除

linux系統的dhcp服務配置

systemctl start dhcpd

systemctl enable dhcpd

拔掉網線

在真機裡

rht-vmctl reset server

rht-vmctl view server

在server虛拟機裡

ifconfig

linux系統的dhcp服務配置

位址已經被配置，dhcp配置完成。