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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3435 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
70 lines
2.7 KiB
XML
70 lines
2.7 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-scripts-hosts">
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<title>Creating the /etc/hosts file</title>
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<?dbhtml filename="hosts.html"?>
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<indexterm zone="ch-scripts-hosts"><primary sortas="e-/etc/hosts">/etc/hosts</primary></indexterm>
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<indexterm zone="ch-scripts-hosts">
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<primary sortas="d-localnet">localnet</primary>
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<secondary>/etc/hosts</secondary></indexterm>
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<indexterm zone="ch-scripts-hosts">
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<primary sortas="d-network">network</primary>
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<secondary>/etc/hosts</secondary></indexterm>
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<para>If a network card is to be configured, you have to decide on the
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IP-address, FQDN and possible aliases for use in the /etc/hosts file. The
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syntax is:</para>
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<screen><IP address> myhost.example.org aliases</screen>
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<para>Unless your computer is to be visible to the Internet (e.g. you have a registered domain and a valid block of assigned IP addresses - most of us don't have this)you should make sure that the IP-address is in the private network
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IP-address range. Valid ranges are:</para>
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<screen> Class Networks
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A 10.0.0.0
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B 172.16.0.0 through 172.31.0.0
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C 192.168.0.0 through 192.168.255.0</screen>
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<para>A valid IP address could be 192.168.1.1. A valid FQDN for this IP could
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be www.linuxfromscratch.org (not recommended as this is a valid registered domain address and could cause your domain name server problems).</para>
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<para>If you aren't going to use a network card, you still need to
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come up with a FQDN. This is necessary for certain programs to operate
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correctly.</para>
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<para>If a network card is not going to be configured, create the
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<filename>/etc/hosts</filename> file by running:</para>
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<screen><userinput>cat > /etc/hosts << "EOF"</userinput>
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# Begin /etc/hosts (no network card version)
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127.0.0.1 <value of HOSTNAME>.example.org <value of HOSTNAME> localhost
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# End /etc/hosts (no network card version)
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<userinput>EOF</userinput></screen>
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<para>If a network card is to be configured, create the
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<filename>/etc/hosts</filename> file by running:</para>
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<screen><userinput>cat > /etc/hosts << "EOF"</userinput>
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# Begin /etc/hosts (network card version)
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127.0.0.1 localhost
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192.168.1.1 <value of HOSTNAME>.example.org <value of HOSTNAME>
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# End /etc/hosts (network card version)
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<userinput>EOF</userinput></screen>
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<para>Of course, the 192.168.1.1 and <value of HOSTNAME>.example.org
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have to be changed to your liking (or requirements if assigned an IP-address
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by a network/system administrator and this machine is planned to be connected
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to an existing network).</para>
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</sect1>
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