mirror of
https://github.com/Zeckmathederg/glfs.git
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3257711590
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@15188 af4574ff-66df-0310-9fd7-8a98e5e911e0
298 lines
10 KiB
XML
298 lines
10 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY dhcpcd-download-http "http://roy.marples.name/downloads/dhcpcd/dhcpcd-&dhcpcd-version;.tar.bz2">
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<!ENTITY dhcpcd-download-ftp "ftp://roy.marples.name/pub/dhcpcd/dhcpcd-6.6.5.tar.bz2">
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<!--<!ENTITY dhcpcd-download-ftp "ftp://ftp.osuosl.org/pub/gentoo/distfiles/dhcpcd-&dhcpcd-version;.tar.bz2">-->
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<!ENTITY dhcpcd-md5sum "e56f630a2e1514b1c6c269dfac60f65d">
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<!ENTITY dhcpcd-size "156 KB">
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<!ENTITY dhcpcd-buildsize "2.3 MB">
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<!ENTITY dhcpcd-time "less than 0.1 SBU">
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]>
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<sect1 id="dhcpcd" xreflabel="dhcpcd-&dhcpcd-version;">
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<?dbhtml filename="dhcpcd.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>dhcpcd-&dhcpcd-version;</title>
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<indexterm zone="dhcpcd">
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<primary sortas="a-dhcpcd">dhcpcd</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to dhcpcd</title>
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<para><application>dhcpcd</application> is an implementation of the
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DHCP client specified in RFC2131. A DHCP client is useful for connecting
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your computer to a network which uses DHCP to assign network
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addresses. dhcpcd strives to be a fully featured, yet very lightweight
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DHCP client.</para>
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&lfs76_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>Download (HTTP): <ulink url="&dhcpcd-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&dhcpcd-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &dhcpcd-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &dhcpcd-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &dhcpcd-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &dhcpcd-time;</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">dhcpcd Dependencies</bridgehead>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="llvm"/> (with Clang)
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</para>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/dhcpcd"/></para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of dhcpcd</title>
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<para>Install <application>dhcpcd</application> by running the following
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commands:</para>
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<screen><userinput>./configure --libexecdir=/lib/dhcpcd \
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--dbdir=/var/tmp &&
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make</userinput></screen>
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<para>This package does not come with a test suite.</para>
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<para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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<screen role='root'><userinput>make install</userinput></screen>
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<!--
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<para>By default, a plain text lease info file isn't created but the
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<application>dhcpcd</application> provides a hook which can be used for creating
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such a file. Install the hook by running the following
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commands as the <systemitem class="username">root</systemitem> user:</para>
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<screen role='root'><userinput>sed -i "s;/var/lib;/run;g" dhcpcd-hooks/50-dhcpcd-compat &&
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install -v -m 644 dhcpcd-hooks/50-dhcpcd-compat /lib/dhcpcd/dhcpcd-hooks/</userinput></screen>
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-->
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<parameter>--libexecdir=/lib/dhcpcd</parameter>: The default
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<filename class="directory">/libexec</filename> is not FHS-compliant.
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Since this directory may need to be available early in the boot,
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<filename class="directory">/usr/libexec</filename> cannot be used either.
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</para>
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<para>
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<parameter>--dbdir=/var/tmp</parameter>: The default
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<filename class="directory">/var/lib</filename> is not FHS-compliant
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</para>
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<para>
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<option>--with-hook=...</option>: You can optionally install more hooks,
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for example to install some configuration files such as
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<filename>ntp.conf</filename>. The set of hooks is in the
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<filename class="directory">dhcpcd-hooks</filename> directory in the
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build tree.
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</para>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring dhcpcd</title>
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<sect3 id="dhcpcd-config">
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<title>Config Files</title>
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<para><filename>/etc/dhcpcd.conf</filename></para>
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<indexterm zone="dhcpcd dhcpcd-config">
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<primary sortas="e-etc-dhcpcd-dhcpcd-conf">/etc/dhcpcd/dhcpcd.conf</primary>
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</indexterm>
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</sect3>
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<sect3 id="dhcpcd-init">
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<title>General Configuration Information</title>
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<para>To configure <command>dhcpcd</command>, you need to first install
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the network service script,
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<filename>/lib/services/dhcpcd</filename>
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included in the <xref linkend="bootscripts"/> package
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(as user <systemitem class="username">root</systemitem>):</para>
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<indexterm zone="dhcpcd dhcpcd-init">
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<primary sortas="f-dhcpcd">dhcpcd (service script)</primary>
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</indexterm>
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<screen role='root'><userinput>make install-service-dhcpcd</userinput></screen>
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<para>Whenever <command>dhcpcd</command> configures or shuts down
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a network interface, it executes hook scripts. For more details
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about those scripts, see the <command>dhcpcd-run-hooks</command> and
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<command>dhcpcd</command> man pages.</para>
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<para id="dhcpcd-config2">Finally, as the <systemitem
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class="username">root</systemitem> user create the
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<filename>/etc/sysconfig/ifconfig.eth0</filename>
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configuration file using the following commands. Adjust appropriately
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for additional interfaces:</para>
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<indexterm zone="dhcpcd dhcpcd-config2">
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<primary sortas="e-etc-sysconfig-dhcpcd">/etc/sysconfig/ifconfig.eth0 (dhcpcd)</primary>
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</indexterm>
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<screen role='root'><userinput>cat > /etc/sysconfig/ifconfig.eth0 << "EOF"
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<literal>ONBOOT="yes"
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IFACE="eth0"
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SERVICE="dhcpcd"
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DHCP_START="-b -q <replaceable><insert appropriate start options here></replaceable>"
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DHCP_STOP="-k <replaceable><insert additional stop options here></replaceable>"</literal>
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EOF</userinput></screen>
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<para>For more information on the appropriate <envar>DHCP_START</envar> and
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<envar>DHCP_STOP</envar> values, examine the man page for
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<command>dhcpcd</command>.</para>
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<note>
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<para id="dhcpcd-config3">The default behavior of
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<command>dhcpcd</command> sets the hostname and mtu settings. It also
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overwrites <filename>/etc/resolv.conf</filename> and
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<filename>/etc/ntp.conf</filename>.
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These modifications to system files and settings on system
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configuration files are done by hooks which are stored in <filename
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class="directory">/lib/dhcpcd/dhcpcd-hooks</filename>.
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Setup <command>dhcpcd</command> by removing or adding hooks from/to
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that directory. The execution of hooks can be disabled by using the
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<option>--nohook</option> (<option>-C</option>) command line option or
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by the <option>nohook</option> option in the
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<filename>/etc/dhcpcd.conf</filename> file.</para>
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<para>Review the <command>dhcpcd</command> man page for switches to add
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to the <envar>DHCP_START</envar> value.</para>
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</note>
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<indexterm zone="dhcpcd dhcpcd-config3">
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<primary sortas="e-etc-resolv.conf">/etc/resolv.conf</primary>
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</indexterm>
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</sect3>
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<sect3 id="dhcpcd-init2">
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<title>Configuration Information: fixed ip</title>
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<para id="dhcpcd-config4">Although not usual, it is possible that you need
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to configure <application>dhcpcd</application> to use a fixed ip. Here,
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we give an example. As the
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<systemitem class="username">root</systemitem> user create the
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<filename>/etc/sysconfig/ifconfig.eth0</filename> configuration file
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using the following commands. Adjust appropriately for additional
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interfaces and for the actual ip and router you need:</para>
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<indexterm zone="dhcpcd dhcpcd-config4">
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<primary sortas="e-etc-sysconfig-dhcpcd">/etc/sysconfig/ifconfig.eth0 (dhcpcd)</primary>
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</indexterm>
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<screen role='root'><userinput>cat > /etc/sysconfig/ifconfig.eth0 << "EOF"
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<literal>ONBOOT="yes"
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IFACE="eth0"
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SERVICE="dhcpcd"
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DHCP_START="-b -q -S ip_address=192.168.0.10/24 -S routers=192.168.0.1"
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DHCP_STOP="-k"</literal>
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EOF</userinput></screen>
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<para>You can either use DNS servers in
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<filename>/etc/resolv.conf</filename> from another system, your
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preferred servers, or just the example
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<filename>/etc/resolv.conf.head</filename> file below as is:</para>
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<screen role='root'><userinput>cat > /etc/resolv.conf.head << "EOF"
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<literal># OpenDNS servers
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nameserver 208.67.222.222
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nameserver 208.67.220.220</literal>
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EOF</userinput></screen>
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</sect3>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Program</segtitle>
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<segtitle>Installed Library</segtitle>
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<segtitle>Installed Directory</segtitle>
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<seglistitem>
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<seg>dhcpcd</seg>
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<seg>/lib/dhcpcd/dev/udev.so</seg>
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<seg>/lib/dhcpcd</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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|
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<varlistentry id="dhcpcd-prog">
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<term><command>dhcpcd</command></term>
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<listitem>
|
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<para>is an implementation of the DHCP client specified
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in RFC2131.</para>
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<indexterm zone="dhcpcd dhcpcd-prog">
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<primary sortas="b-dhcpcd">dhcpcd</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dhcpcd-udev">
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<term><filename class="libraryfile">udev.so</filename></term>
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<listitem>
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<para>
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add udev support for interface arrival and departure; this is
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because udev likes to rename the interface, which it can't do if
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dhcpcd grabs it first.
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</para>
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<indexterm zone="dhcpcd dhcpcd-udev">
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<primary sortas="c-dhcpcd-udev">udev.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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