source: bootscripts/common/hosts.xml @ bf8c11f

Last change on this file since bf8c11f was bf8c11f, checked in by Jim Gifford <clfs@…>, 17 years ago

r627@server (orig r625): jim | 2005-10-31 12:59:34 -0800
Import of Cross-LFS Book

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-scripts-hosts">
9  <?dbhtml filename="hosts.html"?>
10
11  <title>Creating the /etc/hosts File</title>
12
13  <indexterm zone="ch-scripts-hosts">
14    <primary sortas="e-/etc/hosts">/etc/hosts</primary>
15  </indexterm>
16
17  <indexterm zone="ch-scripts-hosts">
18    <primary sortas="d-localnet">localnet</primary>
19  <secondary>/etc/hosts</secondary></indexterm>
20
21  <indexterm zone="ch-scripts-hosts">
22    <primary sortas="d-network">network</primary>
23  <secondary>/etc/hosts</secondary></indexterm>
24
25  <para>If a network card is to be configured, decide on the IP address,
26  FQDN, and possible aliases for use in the
27  <filename>/etc/hosts</filename> file. The syntax is:</para>
28
29  <screen>&lt;IP address&gt; myhost.example.org aliases</screen>
30
31  <para>Unless the computer is to be visible to the Internet (i.e.,
32  there is a registered domain and a valid block of assigned IP
33  addresses&mdash;most users do not have this), make sure that the IP
34  address is in the private network IP address range. Valid ranges
35  are:</para>
36
37<screen><literal>  Class Networks
38  A     10.0.0.0
39  B     172.16.0.0 through 172.31.0.255
40  C     192.168.0.0 through 192.168.255.255</literal></screen>
41
42  <para>A valid IP address could be 192.168.1.1. A valid FQDN for this
43  IP could be <uri>www.linuxfromscratch.org</uri> (not recommended
44  because this is a valid registered domain address and could cause
45  domain name server issues).</para>
46
47  <para>Even if not using a network card, an FQDN is still required.
48  This is necessary for certain programs to operate correctly.</para>
49
50  <para>Create the  <filename>/etc/hosts</filename> file by running:</para>
51
52<screen><userinput>cat &gt; /etc/hosts &lt;&lt; "EOF"
53<literal># Begin /etc/hosts (network card version)
54
55127.0.0.1 localhost
56<replaceable>[192.168.1.1]</replaceable> <replaceable>[&lt;HOSTNAME&gt;.example.org]</replaceable> <replaceable>[HOSTNAME]</replaceable>
57
58# End /etc/hosts (network card version)</literal>
59EOF</userinput></screen>
60
61  <para>The <replaceable>[192.168.1.1]</replaceable> and
62  <replaceable>[&lt;HOSTNAME&gt;.example.org]</replaceable>
63  values need to be changed for specific users or requirements (if
64  assigned an IP address by a network/system administrator and the
65  machine will be connected to an existing network).</para>
66
67
68  <para>If a network card is not going to be configured, create the
69  <filename>/etc/hosts</filename> file by running:</para>
70
71<screen><userinput>cat &gt; /etc/hosts &lt;&lt; "EOF"
72<literal># Begin /etc/hosts (no network card version)
73
74127.0.0.1 <replaceable>[&lt;HOSTNAME&gt;.example.org]</replaceable> <replaceable>[HOSTNAME]</replaceable> localhost
75
76# End /etc/hosts (no network card version)</literal>
77EOF</userinput></screen>
78
79</sect1>
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