DHCP 服务器的配置过程

                        DHCP 服务器的配置过程

以前在做实验的过程中总结和写的一些教程的一些资料，一直没时间发布到博客上面，五一到了，终于有点时间发布啦！关于Linux上面还会有RHCE系列的学习笔记发表
DHCP的安装包是：dhcp-3.0.1-12_EL.i386.rpm
守护进程是：dchpd
服务器的配置过程：
1、安装 rpm包
[root@cisco ~]# cd /media/cdrom/RedHat/RPMS/
[root@cisco RPMS]# rpm -ivh dhcp-3.0.1-12_EL.i386.rpm
warning: dhcp-3.0.1-12_EL.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e
Preparing...                ########################################### [100%]
        package dhcp-3.0.1-12_EL is already installed
[root@cisco RPMS]#
2、复制配置文件的样本：
[root@cisco RPMS]# cp /usr/share/doc/dhcp-3.0.1/dhcpd.conf.sample /etc/dhcpd.conf
3、编辑配置文件：
[root@cisco RPMS]# vi /etc/dhcpd.conf
subnet 192.168.20.0 netmask 255.255.255.0 {
 
# --- default gateway
        option routers                  192.168.20.1;
        option subnet-mask              255.255.255.0;
 
        option nis-domain               "domain.org";
        option domain-name              "benet.com";
        option domain-name-servers      192.168.1.1;
 
        option time-offset              -18000; # Eastern Standard Time
#       option ntp-servers              192.168.1.1;
#       option netbios-name-servers     192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#       option netbios-node-type 2;
 
        range dynamic-bootp 192.168.20.100 192.168.20.200;
        default-lease-time 21600;
        max-lease-time 43200;
 
        # we want the nameserver to appear at a fixed address
        host ns {
                next-server marvin.redhat.com;
                hardware ethernet 12:34:56:78:AB:CD;
                fixed-address 207.175.42.254;
        }
}
www.wqmsl.cn4、启动 dhcp 服务即可
[root@cisco ~]# service dhcpd start
5、多网卡配置选择的配置文件
[root@cisco ~]# cat /etc/sysconfig/dhcpd
# Command line options here
DHCPDARGS=   这里添网卡即可
6、租约文件：
[root@cisco ~]# cat /var/lib/dhcp/dhcpd.leases
# All times in this file are in UTC (GMT), not your local timezone.   This is
# not a bug, so please don't ask about it.   There is no portable way to
# store leases in the local timezone, so please don't request this as a
# feature.   If this is inconvenient or confusing to you, we sincerely
# apologize.   Seriously, though - don't ask.
# The format of this file is documented in the dhcpd.leases(5) manual page.
# This lease file was written by isc-dhcp-V3.0.1
 
lease 192.168.20.200 {
  starts 5 2009/05/29 05:16:44;
  ends 5 2009/05/29 11:16:44;
  tstp 5 2009/05/29 11:16:44;
  binding state active;
  next binding state free;
  hardware ethernet 00:0c:29:00:77:3e;
}
DHCP 客户端的配置
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=dhcp
IPADDR=192.168.20.10
NETMASK=255.255.255.0
GATEWAY=192.168.1.254
[root@localhost ~]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:0C:29:00:77:3E
          inet addr:192.168.20.200  Bcast:192.168.20.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe00:773e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:42757 errors:0 dropped:0 overruns:0 frame:0
          TX packets:207 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2669265 (2.5 MiB)  TX bytes:24116 (23.5 KiB)
          Interrupt:11 Base address:0x2000 
 

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