Linux system DNS and DHCP configuration detailed

Installation

Yum install bind bind-chroot bind-libs bind-utils caching-nameserver

Set security enabled Path

Vi/etc/sysconfig/named

Rootdir=/var/named/chroot

Main set File

Vi/var/named/chroot/etc/named.conf

Primary server Path

/var/named/chroot/var/named/

Secondary server path

/var/named/chroot/var/named/slave

Complete set content, can direct?? posted, and slightly modified to use (hereinafter--secondary server)

Vi/var/named/chroot/etc/named.conf

-------------------Primary Server-----

Options {
        directory       "/var/ Named ";
        dump-file       "/var/named/data/ Cache_dump.db ";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        allow-query     {any;};
        recursion yes;

Forwarders {
163.28.136.14;
163.28.136.2;
163.28.136.10;
};

Allow-transfer {
163.28.136.14;
163.28.136.2;
163.28.136.10;
};

};

Controls {
inet 127.0.0.1 allow {localhost;} keys {rndckey;};
};

Logging {
Channel Default_debug {
File "Data/named.run";
Severity dynamic;
};
};

Zone "." in {
Type hint;
File "named.ca";
};

Zone "Localdomain" in {
Type master;
File "Localdomain.zone";
allow-update {none;};
};

Zone "localhost" in {
Type master;
File "Localhost.zone";
allow-update {none;};
};

Zone "0.0.127.in-addr.arpa" in {
Type master;
File "Named.local";
allow-update {none;};
};

Zone "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" in {
Type master;
File "Named.ip6.local";
allow-update {none;};
};

Zone "255.in-addr.arpa" in {
Type master;
File "Named.broadcast";
allow-update {none;};
};

Zone "0.in-addr.arpa" in {
Type master;
File "Named.zero";
allow-update {none;};
};

Zone "school.kh.edu.tw" in {
Type master;
File "Named.school";
allow-update {none;};
};

Zone "X.32.163.in-addr.arpa" in {
Type master;
File "Named.school.rev";
allow-update {none;};
};

Include "/etc/rndc.key";

-------------------Secondary Server-----

Options {
listen-on port {any;};
Listen-on-v6 Port 53 {:: 1;};
Directory "/var/named";
Dump-file "/var/named/data/cache_dump.db";
Statistics-file "/var/named/data/named_stats.txt";
Memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query {any;};
recursion Yes;

Forwarders {
163.28.136.14;
163.28.136.2;
163.28.136.10;
};

};

Controls {
inet 127.0.0.1 allow {localhost;} keys {rndckey;};
};

Logging {
Channel Default_debug {
File "Data/named.run";
Severity dynamic;
};
};

Zone "." in {
Type hint;
File "named.ca";
};

Zone "Localdomain" in {
Type master;
File "Localdomain.zone";
allow-update {none;};
};

Zone "localhost" in {
Type master;
File "Localhost.zone";
allow-update {none;};
};

Zone "0.0.127.in-addr.arpa" in {
Type master;
File "Named.local";
allow-update {none;};
};

Zone "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" in {
Type master;
File "Named.ip6.local";
allow-update {none;};
};

Zone "255.in-addr.arpa" in {
Type master;
File "Named.broadcast";
allow-update {none;};
};

Zone "0.in-addr.arpa" in {
Type master;
File "Named.zero";
allow-update {none;};
};

Zone "school.kh.edu.tw" in {
Type slave;
File "Slave/named.x.rev";
masters{
163.32. Code number. 1;
};
};

Zone "code. 32.163.in-addr.arpa" in {
Type slave;
File "Slave/named.sxhool.rev";
masters{
163.32. Code number. 1;
};
};

Include "/etc/rndc.key";

Reboot 111cn.net

Service named restart

Check for Named.x.rev and named.x solutions two files

cd/var/named/chroot/var/named/

The contents of the secondary server are updated with the main server, maintaining the primary server on a regular basis, and the secondary server for emergency use!

----------Named.shsps----------

$TTL 86400
@ in SOA x.kh.edu.tw. ROOT.X.KH.EDU.TW (
2010052730; Serial
1H; Refresh
15; Retry
14D; Expire
12H; Minimum 111cn.net
)

@ in MX 1 mail.x.kh.edu.t
@ in NS x.kh.edu.tw.
@ in NS dns.x.kh.edu.tw.
@ in A 163.32.x.1
DNS in A 163.32.x.1
FTP in A 163.32.x.2

www in CNAME ftp.x.kh.edu.tw.

----------Named.shsps.rev----------Format

$TTL 86400
@ in SOA x.kh.edu.tw. root.x.kh.edu.tw. (
2010052710; Serial
1H; Refresh
15; Retry
14D; Expire
12H; Minimum
)
@ in NS x.kh.edu.tw.
@ in NS dns.x.kh.edu.tw.
1 in PTR x.kh.edu.tw.
2 in PTR www.x.kh.edu.tw.

DHCP server
Setup program

Yum-y Install dhcp*

Set the file, and the network card has to be set.

Vi/etc/dhcpd.conf

Ddns-update-style Interim;
Ignore client-updates;

Subnet 163.32.x.0 netmask 255.255.255.0 {
}

Subnet 192.168.1.0 netmask 255.255.255.0 {
}

Subnet 192.168.2.0 netmask 255.255.255.0 {

#---Default gateway
Option routers 192.168.1.1;
Option Subnet-mask 255.255.255.0;
Option broadcast-address 192.168.1.255;

Option Domain-name "dns.xxx.kh.edu.tw";
Option Domain-name-servers 163.32.x.1,140.117.11.1,168.95.1.1;
Option Netbios-name-servers 163.32.x.1;
Option time-offset-18000; # Eastern Standard Time
Option Netbios-node-type 8;
Range DYNAMIC-BOOTP 192.168.1.11 192.168.1.239;
Default-lease-time 216000;
Max-lease-time 432000;

# We want the nameserver to appear in a fixed host IP

Host shsps00001{
Hardware Ethernet 00:13:d4:9c:3d:6a;
Fixed-address 163.32.x.10;
}

}

Set Preset Gateway

Vi/etc/sysconfig/network

Networking=yes
Networking_ipv6=yes
hostname=hostname.kh.edu.tw
gateway=163.32.x.254

Restart Network

Service Network restart

Check server lease file

Vi/var/lib/dhcpd/dhcpd.leases