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mck |
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<?xml version="1.0" encoding="ISO-8859-2"?>
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joeyh |
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<!-- $Id$ -->
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mck |
6060 |
<!-- original version: 1.5 -->
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<sect2 condition="supports-dhcp" id="dhcpd">
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<title>Nastavení DHCP serveru</title>
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<para>
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V dobì psaní tohoto manuálu existuje pouze jeden svobodný DHCP server
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— ISC <command>dhcpd</command>. &debian; jej obsahuje jako balík
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<classname>dhcp</classname>. Následuje ukázka jednoduchého
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konfiguraèního souboru (obvykle <filename>/etc/dhcpd.conf</filename>):
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<informalexample><screen>
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option domain-name "priklad.cz";
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option domain-name-servers ns1.priklad.cz;
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option subnet-mask 255.255.255.0;
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default-lease-time 600;
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max-lease-time 7200;
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server-name "karel";
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subnet 192.168.1.0 netmask 255.255.255.0 {
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range 192.168.1.200 192.168.1.253;
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option routers 192.168.1.1;
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}
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host clientname {
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filename "/tftpboot/tftpboot.img";
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server-name "karel";
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next-server servername;
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hardware ethernet 01:23:45:67:89:AB;
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fixed-address 192.168.1.90;
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}
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</screen></informalexample>
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</para><para>
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V tomto pøíkladu máme jeden server jménem
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<replaceable>karel</replaceable>, který obstarává práci DHCP a
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TFTP serveru a také slou¾í jako brána do sítì. Ve svém nastavení si
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musíte zmìnit alespoò doménové jméno, jméno serveru a hardwarovou
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adresu klienta. Polo¾ka <replaceable>filename</replaceable> by mìla
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obsahovat název souboru, který si klient stáhne pøes TFTP.
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</para><para>
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Po úpravách konfiguraèního souboru musíte restartovat
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<command>dhcpd</command> pøíkazem <userinput>/etc/init.d/dhcpd
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restart</userinput>.
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</para>
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<sect3 arch="i386">
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<title>PXE zavádìní</title>
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<para>
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Dal¹í pøíklad souboru <filename>dhcp.conf</filename> tentokrát vyu¾ívá
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metodu PXE (Pre-boot Execution Environment) protokolu TFTP.
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<informalexample><screen>
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option domain-name "priklad.cz";
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default-lease-time 6048;
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max-lease-time 604800;
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allow booting;
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allow bootp;
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# Následující odstavec si musíte upravit dle skuteènosti
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subnet 192.168.1.0 netmask 255.255.255.0 {
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range 192.168.1.200 192.168.1.253;
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option subnet-mask 255.255.255.0;
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option broadcast-address 192.168.1.255;
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# adresa brány
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# (napøíklad pro pøístup k internetu)
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option routers 192.168.1.1;
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# dns server, který chcete pou¾ít
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option domain-name-servers 192.168.1.3;
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}
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host tftpserver {
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# ip adresa tftp serveru
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fixed-address 192.168.1.90;
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# hardwarová adresa tftp serveru
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hardware ethernet 01:23:45:67:89:AB;
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}
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group {
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next-server 192.168.1.3;
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host tftpclient {
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# hardwarová adresa tftp klienta
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hardware ethernet 00:10:DC:27:6C:15;
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filename "/tftpboot/pxelinux.0";
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}
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}
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</screen></informalexample>
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Pøi PXE zavádìní není soubor <filename>pxelinux.0</filename> obraz
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jádra, ale zavadìè (viz <xref linkend="tftp-images"/> dále v textu).
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</para>
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</sect3>
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</sect2>
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