dhcp服務

1.服務端
（1） 配置服務器為ip靜態
1.通過圖形修改 ：nm-connection-editor

     2.配置Yum源
     cd /etc/yum.repos.d   
     ls   
     vim  rhel_dvd.repo   配置yum源
     yum inatll dhcp        安裝dhcp
     yum clean all           清空yum緩存
     3.vim /etc/dhcp/dhcpd.conf              查看配置文件

cp /usr/share/doc/dhcp/dhcpd.conf.example(配置文件模板)  復制配置文件模板到/etc/dhcp/dhcpd.conf
             5.vim /etc/dhcp/dhcpd.conf          修改配置文件

**編輯內容**
             6 # option definitions common to all supported networks...

? 7 option domain-name "westos.com";???????????????????????? 域名

? 8 option domain-name-servers 172.25.254.250;?????????? dns地址

?9

10 default-lease-time 600;??????????????????????????????? 默認租約期限

11 max-lease-time 7200;????????????????????????????????? 最長租約期限

12?

13 # Use this to enble / disable dynamic dns updates globally.

14 #ddns-update-style none;

15?

16 # If this DHCP server is the official DHCP server for the local

17 # network, the authoritative directive should be uncommented.

18 #authoritative;

19?

20 # Use this to send dhcp log messages to a different log file (you also

21 # have to hack syslog.conf to complete the redirection).

22 log-facility local7;?????????????????????????????????????? 日志級別

23?

24 # No service will be given on this subnet, but declaring it helps the

25 # DHCP server to understand the network topology.

26?

27?

28?

29 # This is a very basic subnet declaration.

30?

31 subnet 172.25.254.0 netmask 255.255.255.0 {???????????? 設定分配ip的網絡位

32?? range 172.25.254.200 172.25.254.220;?????????????????? ip地址池

33?? option routers 172.25.254.250;???????????????????????? 客戶主機獲得的網關

客戶端
1.編輯配置文件修改dhcp：vim /etc/sysconfig/network-scripts/ifcfg-eth0
將BOOTPROTO=dhcp
2.systemctl restart network 重啟服務獲得ip
3.3.ifconfig **查看ip