CentOS 7部署DHCP服务

CentOS 7 DHCP服务器部署

背景：

某单位需要配置一台DHCP服务器给桌面PC机分配IP地址。 这些PC机分配到二个VLAN中，为便于ip管理和降低公司管理成本搭建公司内部的DHCP服务器，

IP地址规划与配置

网络	IP地址范围	网关	备份
VLAN1	192.168.188.100-192.168.188.253/24 排除 192.168.188.160到192.168.188.169	192.168.188.2
VLAN2	192.168.189.100-192.168.189.253/24	192.168.189.2

DHCP服务器为ZZyh1.BIGCLOUD.LOCAL，其IP地址为192.168.188.15。此单位的DNS服务器的地址为192.168.188.15、192.168.188.16需要将192.168.188.111保留给无法配置静态IP地址的打印机，其MAC地址为00:12:34:56:78:90VLAN1的地址租约是3天，VLAN2的地址租约是8天

zzyh1上的DHCP配置

查看版本信息

[root@localhost~]# uname -a
Linuxlocalhost.localdomain 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014x86_64 x86_64 x86_64 GNU/Linux
[root@localhost~]# cat /etc/redhat-release
CentOSLinux release 7.0.1406 (Core)

更该主机名

[root@zzyh1~]# vi /etc/hostname
[root@zzyh1~]# cat /etc/hostname
zzyh1.bigcloud.local

安装

#mount /dev/cdrom /media //挂在光驱
/dev/sr0on /media type iso9660 (ro,relatime)
#cd /media/Packages //进入目录
[root@zzyh1Packages]# ls dhcp*
dhcp-4.2.5-27.el7.centos.x86_64.rpm
dhcp-common-4.2.5-27.el7.centos.x86_64.rpm
dhcp-libs-4.2.5-27.el7.centos.x86_64.rpm

安装支持包

[root@zzyh1Packages]# rpm -vihdhcp-4.2.5-27.el7.centos.x86_64.rpm
warning:dhcp-4.2.5-27.el7.centos.x86_64.rpm: Header V3 RSA/SHA256 Signature, key IDf4a80eb5: NOKEY
Preparing... ################################# [100%]
Updating/ installing...
1:dhcp-12:4.2.5-27.el7.centos ################################# [100%]

查看安装后生成的配置文件

[root@zzyh1Packages]# rpm -qc dhcp
/etc/dhcp/dhcpd.conf
/etc/dhcp/dhcpd6.conf
/etc/openldap/schema/dhcp.schema
/etc/sysconfig/dhcpd
/var/lib/dhcpd/dhcpd.leases
/var/lib/dhcpd/dhcpd6.leases
[root@zzyh1Packages]# cd /etc/dhcp
[root@zzyh1dhcp]# ls
dhclient.d dhcpd6.conf dhcpd.conf

配置DHCP的文件

编辑前备份

[root@zzyh1 dhcp]# cpdhcpd.conf dhcpd.conf.origin
[root@zzyh1dhcp]# cat /etc/dhcp/dhcpd.conf
#
# DHCPServer Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.example
# see dhcpd.conf(5) man page
#

编辑DHCP的配置文件

# vi/etc/dhcp/dhcpd.conf //编辑下面内容

optiondomain-name "bigcloud.local"; optiondomain-name-servers 192.168.188.11, 192.168.188.12; default-lease-time691200; max-lease-time691200; subnet192.168.188.0 netmask 255.255.255.0 { range 192.168.188.100 192.168.188.159; range 192.168.188.170 192.168.188.253; default-lease-time 259200; max-lease-time 259200; option routers 192.168.188.2; } subnet192.168.189.0 netmask 255.255.255.0 { range 192.168.189.100 192.168.189.253; option routers 192.168.189.2; } host printer1 { hardware ethernet 00:12:34:56:78:90; fixed-address 192.168.188.111; }

重启DHCP服务

配置DHCPD为自动 启动, 这在CentOS 7上的新的变化 了
# chkconfig dhcpd on //设置自动启动
Note:Forwarding request to 'systemctl enable dhcpd.service'.
ln -s'/usr/lib/systemd/system/dhcpd.service''/etc/systemd/system/multi-user.target.wants/dhcpd.service'

#systemctl enable dhcpd
# systemctl is-enabled dhcpd
enabled

测试

在一台Windows客户机上进行测试

当用户租用到IP后
#tail /var/log/messages //查看日志的命令
#tail /var/lib/dhcpd/dhcpd/leases //只查看dhcp的日志

分配Ip的日志

Aug 2402:04:34 zzyh1 dhcpd: Listening onLPF/eno16777728/00:0c:29:e0:40:8a/192.168.188.0/24 Aug 2402:04:34 zzyh1 dhcpd: Sending on LPF/eno16777728/00:0c:29:e0:40:8a/192.168.188.0/24 Aug 2402:04:34 zzyh1 dhcpd: Sending on Socket/fallback/fallback-net Aug 2402:06:23 zzyh1 dhcpd: DHCPDISCOVER from 00:0c:29:9c:6d:9a via eno16777728 Aug 2402:06:24 zzyh1 dhcpd: DHCPOFFER on 192.168.188.100 to 00:0c:29:9c:6d:9a (zzyh)via eno16777728 Aug 2402:06:24 zzyh1 dhcpd: DHCPREQUEST for 192.168.188.100 (192.168.188.15) from00:0c:29:9c:6d:9a (zzyh) via eno16777728 Aug 2402:06:24 zzyh1 dhcpd: DHCPACK on 192.168.188.100 to 00:0c:29:9c:6d:9a (zzyh)via eno16777728

总结：

这是项目的开始，整个项目包括了DNS，FTP，SAMBA，Web，NTP和防火墙的设置。这些点滴记录这我的成长，菜鸟之路开始慢慢的走向正规系统的练习。希望你的关注和督促，努力吧！骚（少）年！！！

本文出自 “陈州-菜鸟之路” 博客，请务必保留此出处http://chenzhou312.blog.51cto.com/8139578/1543846