DNS笔记

DHCP dynamic host configuration protocol    批量部署  自动配IP

相关文件

/etc/dhcpd.conf 主配置文件

/usr/share/doc/dhcp.*/dhcpd.sample 模板文件

/usr/sbin/dhcpd 执行文件

/var/lib/dhcpd/dhcpd.leases 租约文件

/etc/syscofig/dhcrelay 中继代理配置文件

vim /etc/services  所有的端口号

service dhcp start

/etc/init.d/dhcpd start 启动服务

/usr/sbin/dhcpd

自定网卡启动DHCP服务

/etc/sysconfig/dhcpd

DHCPARGS=eth0

DHCP

mount /dev/cdrom /mnt/

服务器端：

Server #rpm -ivh  dhcp* -y

cp /usr/share/doc/dhcp-3.0.5/dhcp.conf.sample /etc/dhcpd.conf

vim /etc/dhcpd.conf

中继代理

vim /etc/sysconfig/dhcrelay

service dhcrelay restart

ECHO 1> /proc/sys/net/ipv4/ip_forward      转发                     

vim /etc/sysctl.conf

net.ipv4.ip_forward=1

sysctl -p

冗余

server1 192.168.1.2/24

dhcpd.conf

ddns-update-style none;

ignore client-updates;

default-lease-time 21600;

max-lease-time 43200;

option subnet-mask              255.255.255.0;

option broadcast-address 192.1681.255;

option time-offset              -28800; # Eastern Standard Time

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.1.1;

        option domain-name-servers      192.168.1.1,202.106.0.20;

        range 192.168.1.3 192.168.1.60;

}

subnet 192.168.1.0 netmask 255.255.255.0 {

        option routers                  192.168.2.1;

        option domain-name-servers      192.168.2.1,202.106.0.20;

        range 192.168.2.3 192.168.2.60;

}

server2 192.168.2.2/24

dhcpd.conf

ddns-update-style none;

ignore client-updates;

default-lease-time 21600;

max-lease-time 43200;

option subnet-mask              255.255.255.0;

option broadcast-address 192.168.2.255;

option time-offset              -28800; # Eastern Standard Time

subnet 192.168.0.0 netmask 255.255.255.0 {

        option routers                  192.168.1.1;

        option domain-name-servers      192.168.1.1,202.106.0.20;

        range 192.168.0.61 192.168.0.120;

}

subnet 192.168.1.0 netmask 255.255.255.0 {

        option routers                  192.168.2.1;

        option domain-name-servers      192.168.2.1,202.106.0.20;

        range 192.168.2.61 192.168.2.120;

}

日志分离

dhcpd.conf

log-facility local4;

syslog.conf

*.info;mail.none;authpriv.none;cron.none;local4.none                /var/log/messages

local4.* /var/log/dhcpd.log

service syslog restart

service dhcpd restart

iptables -L

sestaus-v

server1

echo 1 > /proc/sys/ipv4/ip_forwarad

(echo 1 > /proc/sys/net/ipv4/conf/all/bootp_relay)

/etc/sysconfig/dhcrelay

INITERFACES="172.17.17.2"

servi

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