mirror of
https://github.com/Zeckmathederg/glfs.git
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e577f07631
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@17064 af4574ff-66df-0310-9fd7-8a98e5e911e0
314 lines
11 KiB
XML
314 lines
11 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 autofs-download-http "http://www.kernel.org/pub/linux/daemons/autofs/v5/autofs-&autofs-version;.tar.xz">
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<!ENTITY autofs-download-ftp "ftp://ftp.kernel.org/pub/linux/daemons/autofs/v5/autofs-&autofs-version;.tar.xz">
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<!ENTITY autofs-md5sum "889c9d2f0e76f08ae0ff0d206f119098">
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<!ENTITY autofs-size "284 KB">
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<!ENTITY autofs-buildsize "11 MB">
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<!ENTITY autofs-time "0.1 SBU">
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]>
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<sect1 id="autofs" xreflabel="Autofs-&autofs-version;">
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<?dbhtml filename="autofs.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>autofs-&autofs-version;</title>
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<indexterm zone="autofs">
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<primary sortas="a-Autofs">Autofs</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to Autofs</title>
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<para>
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<application>Autofs</application> controls the operation of the automount
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daemons. The automount daemons automatically mount filesystems when they
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are accessed and unmount them after a period of inactivity. This is done
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based on a set of pre-configured maps.
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</para>
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&lfs79_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="&autofs-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&autofs-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &autofs-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &autofs-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &autofs-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &autofs-time;</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Autofs Dependencies</bridgehead>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="libtirpc"/>,
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<xref linkend="nfs-utils"/>,
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<xref linkend="libxml2"/>,
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<xref linkend="mitkrb"/>,
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<xref linkend="openldap"/> (client only), and
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<xref linkend="cyrus-sasl"/>
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</para>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/autofs"/></para>
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</sect2>
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<sect2 role="kernel" id="autofs-kernel">
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<title>Kernel Configuration</title>
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<indexterm zone="autofs autofs-kernel">
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<primary sortas="d-Automounter">Automounter</primary>
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</indexterm>
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<para>
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Verify that automounter kernel support has been enabled:
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</para>
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<screen><literal>File systems --->
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<*/M> Kernel automounter version 4 support (also supports v3) [CONFIG_AUTOFS4_FS]</literal></screen>
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<para>
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Optionally, enable the following options in the kernel configuration:
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</para>
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<screen><literal>File systems --->
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[*] Network File Systems ---> [CONFIG_NETWORK_FILESYSTEMS]
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<*/M> NFS client support [CONFIG_NFS_FS]
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<*/M> CIFS support (advanced network filesystem, SMBFS successor) [CONFIG_CIFS]</literal></screen>
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<para>Recompile and install the new kernel, if necessary.</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Autofs</title>
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<para>Install <application>Autofs</application> by running the following
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commands:</para>
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<screen><userinput>./configure --prefix=/ \
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--without-openldap \
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--mandir=/usr/share/man &&
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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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</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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<option>--with-libtirpc</option>: This switch enables libtirpc support if
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available.
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</para>
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<para>
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<option>--without-openldap</option>: This switch disables openldap if
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found. If openldap is desired, omit this switch. Note that openldap
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support in autofs requires <xref linkend="mitkrb"/>.
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</para>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring Autofs</title>
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<sect3 id="autofs-config">
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<title>Config Files</title>
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<para><filename>/etc/sysconfig/autofs.conf</filename>,
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<filename>/etc/auto.master</filename>,
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<filename>/etc/auto.misc</filename>, and
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<filename>/etc/auto.net</filename></para>
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<indexterm zone="autofs autofs-config" >
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<primary sortas="e-etc-sysconfig-autofs.conf">/etc/sysconfig/autofs.conf</primary>
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</indexterm>
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<indexterm zone="autofs autofs-config">
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<primary sortas="e-etc-auto.master">/etc/auto.master</primary>
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</indexterm>
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<indexterm zone="autofs autofs-config">
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<primary sortas="e-etc-auto.misc">/etc/auto.misc</primary>
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</indexterm>
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<indexterm zone="autofs autofs-config">
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<primary sortas="e-etc-auto.net">/etc/auto.net</primary>
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</indexterm>
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</sect3>
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<sect3>
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<title>Configuration Information</title>
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<para>The installation process creates <filename>auto.master</filename>,
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<filename>auto.misc</filename>, <filename>auto.smb</filename>, and
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<filename>auto.net</filename>. Replace the
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<filename>auto.master</filename> file with the following commands
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as the <systemitem class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>mv /etc/auto.master /etc/auto.master.bak &&
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cat > /etc/auto.master << "EOF"
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<literal># Begin /etc/auto.master
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/media/auto /etc/auto.misc --ghost
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#/home /etc/auto.home
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# End /etc/auto.master</literal>
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EOF</userinput></screen>
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<para>This file creates a new media directory, <filename>/media/auto</filename>
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that will overlay any existing directory of the same name. In this example,
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the file, <filename>/etc/auto.misc</filename>, has a line:</para>
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<screen>cd -fstype=iso9660,ro,nosuid,nodev :/dev/cdrom</screen>
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<para>that will mount a cdrom as <filename>/media/auto/cd</filename> if
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that directory is accessed. The <option>--ghost</option> option tells
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the automounter to create <quote>ghost</quote> versions (i.e. empty
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directories) of all the mount points listed in the configuration file
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regardless whether any of the file systems are actually mounted or not.
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This is very convenient and highly recommended, because it will show you
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the available auto-mountable file systems as existing directories, even
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when their file systems aren't currently mounted. Without the
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<option>--ghost</option> option, you'll have to remember the names of the
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directories. As soon as you try to access one of them, the directory will
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be created and the file system will be mounted. When the file system gets
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unmounted again, the directory is destroyed too, unless the
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<option>--ghost</option> option was given.</para>
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<note>
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<para>An alternative method would be to specify another automount
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location such as <filename
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class='directory'>/var/lib/auto/cdrom</filename> and create a
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symbolic link from <filename class='directory'>/media/cdrom</filename>
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to the automount location.</para>
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</note>
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<para>The <filename>auto.misc</filename> file must be configured to your
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working hardware. The loaded configuration file should load your cdrom
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if <filename>/dev/cdrom</filename> is active or it can be edited to
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match your device setup. Examples for floppies are available in the file
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and easily activated. Documentation for this file is available using the
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<command>man 5 autofs</command> command.</para>
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<para>In the second line, if enabled, a user's home directory would be
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mounted via NFS upon login. The <filename>/etc/home.auto</filename>
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would need to exist and have an entry similar to:</para>
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<screen>joe example.org:/export/home/joe</screen>
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<para>where the directory <filename>/export/home/joe</filename> is
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exported via NFS from the system example.org. NFS shares
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are covered on the next page.</para>
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<para>This package could also be used to mount SMB shares, however that
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feature is not configured in these instructions. For additional
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configuration information, see the man pages for auto.master(5). There
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are also web resources such as this <ulink
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url='http://wiki.gentoo.org/wiki/Autofs'>AUTOFS
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HOWTO</ulink> available.</para>
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</sect3>
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<sect3 id="autofs-init">
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<title>Boot Script</title>
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<para> <application>autofs</application> installs its own boot script,
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but it has no capability for logging or visual conformance with other
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BLFS scripts.</para>
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<para>Install the <filename>/etc/init.d/autofs</filename> mount script
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included with the <xref linkend="bootscripts"/> package.</para>
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<indexterm zone="autofs autofs-init">
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<primary sortas="f-autofs-init">autofs</primary>
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</indexterm>
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<screen role="root"><userinput>make install-autofs</userinput></screen>
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<para>The time-out variable is set in
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<filename>/etc/sysconfig/autofs.conf</filename>. The installed file sets
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a default of 60 seconds of inactivity before unmounting the device. A
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much shorter time may be necessary to protect buffer writing to a floppy
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if users tend to remove the media prior to the timeout setting.</para>
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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 Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>automount</seg>
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<seg>
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lookup_dir.so, lookup_file.so, lookup_files.so, lookup_hosts.so,
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lookup_ldap.so, lookup_multi.so, lookup_nis.so, lookup_nisplus.so,
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lookup_program.so, lookup_userhome.so, lookup_yp.so, mount_afs.so,
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mount_autofs.so, mount_bind.so, mount_changer.so, mount_ext2.so,
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mount_ext3.so, mount_ext4.so, mount_generic.so, mount_nfs.so,
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mount_nfs4.so, parse_amd.so, and parse_sun.so
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</seg>
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<seg>/lib/autofs</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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<varlistentry id="automount">
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<term><command>automount</command></term>
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<listitem>
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<para>is the daemon that performs the mounting when a request is
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made for the device.</para>
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<indexterm zone="autofs automount">
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<primary sortas="b-automount">automount</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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