Introduction
This document describes how to install DHCP, DNS and PXE network services on a debian squeeze.
For this tutorial I use a machine that has two network interfaces:
eth0: 10.34.132.149/255.255.254.0 (WAN interface)
eth1: 172.20.30.1/255.255.255.0 (LAN interface)
To install a PXE server, you will need the following components:
DHCP Server
TFTP Server
NFS/FTP/HTTPD server (to store installing files)
Note: DHCP Server will listen only on eth1.
In this tutorial I will use apache2 server.
Install required packages
[codesyntax lang="bash"]
apt-get install tftpd-hpa syslinux dhcp3-server bind9 dnsutils
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Configure DHCP Server
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vim /etc/dhcp/dhcpd.conf
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ddns-update-style ad-hoc;
log-facility syslog;
option domain-name "test.org";
option domain-name-servers 172.20.30.1;
option subnet-mask 255.255.255.0;
subnet 172.20.30.0 netmask 255.255.255.0 {
authoritative;
range 172.20.30.10 172.20.30.90; # ip range
option routers 172.20.30.1; # gateway for clients
######
# in case want to deny clients that are not configured in dhcpd uncomment the following line
######
#deny unknown-clients;
allow booting;
allow bootp;
next-server 172.20.30.1; # tftpd server's IP
filename "pxelinux.0";
######
# sample of a client that has mac address reserved on dhcp
######
#host guest1 {
# hardware ethernet 00:0C:29:14:DA:AD;
# fixed-address 172.20.30.15;
#}
######
}
Force DHCP Server to listen only on eth1
[codesyntax lang="bash"]
vim /etc/default/isc-dhcp-server :%s/INTERFACES=""/INTERFACES="eth1"/g :wq
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Configure TFTP Server. Change the root directory on startup from /srv/tftp to /tftpboot
[codesyntax lang="bash"]
vim /etc/default/tftpd-hpa :%s/\/srv\/tftp/\/tftpboot/g :wq
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Setup TFTP Server network boot files
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mkdir -p /tftpboot chmod 777 /tftpboot cp -v /usr/lib/syslinux/pxelinux.0 /tftpboot cp -v /usr/lib/syslinux/menu.c32 /tftpboot cp -v /usr/lib/syslinux/memdisk /tftpboot cp -v /usr/lib/syslinux/mboot.c32 /tftpboot cp -v /usr/lib/syslinux/chain.c32 /tftpboot mkdir /tftpboot/pxelinux.cfg
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Create PXE menu file
[codesyntax lang="bash"]
vim /tftpboot/pxelinux.cfg/default
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default menu.c32
prompt 0
timeout 300
MENU TITLE test.org PXE Menu
LABEL centos6.3_i386
MENU LABEL CentOS 6.3 i386
KERNEL /netboot/centos/6.3/i386/vmlinuz
APPEND console=tty0 console=ttyS0,9600N1 initrd=/netboot/centos/6.3/i386/initrd.img ks=http://172.20.30.1/netboot/centos/6.3/i386/centos6.3-ks.cfg ksdevice=link
Share the internet connection with clients
[codesyntax lang="bash"]
vim /etc/sysctl.conf :%s/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1 :wq
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Apply the settings:
[codesyntax lang="bash"]
sysctl -p
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Share internet connection using iptables:
[codesyntax lang="bash"]
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
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Configure bind9
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echo "include \"/etc/bind/bind.keys\"; ">> /etc/bind/named.conf vim /etc/bind/named.conf.options
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options {
directory "/var/cache/bind";
auth-nxdomain no; # conform to RFC1035
listen-on-v6 { none; };
forwarders { 8.8.8.8; 8.8.4.4; };
listen-on port 53 { any; };
allow-query { any; };
allow-query-cache { any; };
};
Add the following lines at the end of the named.conf.default-zones
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vim /etc/bind/named.conf.default-zones
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zone "test.org" {
type master;
file "/etc/bind/test.org";
};
zone "30.20.172.in-addr.arpa" {
type master;
file "/etc/bind/30.20.172.in-addr.arpa";
};
[codesyntax lang="bash"]
vim /etc/bind/test.org
[/codesyntax]
$ORIGIN test.org.
$TTL 1H
test.org. IN SOA ns.test.org. root.test.org. (
2012062600 ; serial
12H ; refresh
2H ; retry
1W ; expiry
2D ) ; minimum
test.org. IN NS ns.test.org.
ns.test.org. IN A 172.20.30.1
www10 IN A 172.20.30.10
www11 IN A 172.20.30.11
www12 IN A 172.20.30.12
www13 IN A 172.20.30.13
www14 IN A 172.20.30.14
www15 IN A 172.20.30.15
[codesyntax lang="bash"]
vim /etc/bind/30.20.172.in-addr.arpa
[/codesyntax]
$ORIGIN 30.20.172.in-addr.arpa.
$TTL 2D
@ IN SOA ns.test.org. root.test.org. (
2012062600 ; serial
12H ; refresh
2H ; retry
1W ; expiry
2D ) ; minimum
@ IN NS ns.test.org.
1 IN PTR ns.test.org.
10 IN PTR www10.test.org.
11 IN PTR www11.test.org.
12 IN PTR www12.test.org.
13 IN PTR www13.test.org.
14 IN PTR www14.test.org.
15 IN PTR www15.test.org.
Let's use our DNS server
[codesyntax lang="bash"]
echo "search test.org" > /etc/resolv.conf echo "nameserver 127.0.0.1" >> /etc/resolv.conf
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