CentOS建立DHCP服务2——系统自带的dnsmasq
先祭出师父的不老歌：http://debugo.com/dnsmasq/
dnsmasq is a lightweight DNS, TFTP and DHCP server.
这货可以用于dns，tftp，DHCP。
配置文档位置：/etc/dnsmasq.conf
使用文档（巨特么长）：See”/usr/sbin/dnsmasq –help” or “man 8 dnsmasq” for details.
Getting start
一、DHCP server的几个小配置：
1.配置监听端口（就是我从哪个网卡或者ip接受DHCP请求）：
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# If you want dnsmasq to listen for DHCP and DNS requests only on # specified interfaces (and the loopback) give the name of the # interface (eg eth0) here. # Repeat the line for more than one interface. #interface= # Or you can specify which interface _not_ to listen on #except-interface= # Or which to listen on by address (remember to include 127.0.0.1 if # you use this.) listen-address=192.168.0.101（本机IP）,127.0.0.1 |
2.DHCP地址池及有效时间
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# Uncomment this to enable the integrated DHCP server, you need # to supply the range of addresses available for lease and optionally # a lease time. If you have more than one network, you will need to # repeat this for each network on which you want to supply DHCP # service. dhcp-range=192.168.0.50,192.168.0.150,12h |
3.给MAC地址为的主机分配：IP，主机名，有效时间
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# Always give the host with ethernet address 11:22:33:44:55:66 # the name fred and IP address 192.168.0.60 and lease time 45 minutes dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m |
4.配域
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# Set the domain for dnsmasq. this is optional, but if it is set, it # does the following things. # 1) Allows DHCP hosts to have fully qualified domain names, as long # as the domain part matches this setting. # 2) Sets the "domain" DHCP option thereby potentially setting the # domain of all systems configured by DHCP # 3) Provides the domain part for "expand-hosts" domain=thekelleys.org.uk |
二、dns server的配置
犯懒了，直接看师父的吧：
注：如果IP池里的IP被占用，或者没有可用IP，则分配IP的任何操作都不会生效。这时应该先检查IP的使用情况，而不是配置文件表述错误（毕竟有例子，书写错误的概率太低了好嘛！）
没打完，也收工了