source: server/major/nfs-utils.xml@ 88adcdd

<?xml version="1.0" encoding="ISO-8859-1"?>
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  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY nfs-utils-download-http "http://ftp.kernel.org/pub/linux/utils/nfs/nfs-utils-&nfs-utils-version;.tar.gz">
  <!ENTITY nfs-utils-download-ftp  "ftp://ftp.kernel.org/pub/linux/utils/nfs/nfs-utils-&nfs-utils-version;.tar.gz">
  <!ENTITY nfs-utils-md5sum        "8f863120261cd572ad320a9152581e11">
  <!ENTITY nfs-utils-size          "396 KB">
  <!ENTITY nfs-utils-buildsize     "5.8 MB">
  <!ENTITY nfs-utils-time          "0.2 SBU">
]>

<sect1 id="nfs-utils" xreflabel="NFS Utilities-&nfs-utils-version;">
<sect1info>
  <othername>$LastChangedBy$</othername>
  <date>$Date$</date>
</sect1info>

<?dbhtml filename="nfs-utils.html"?>
<title>NFS Utilities-&nfs-utils-version;</title>

<indexterm zone="nfs-utils">
  <primary sortas="a-Nfs-utils">NFS Utilities</primary>
</indexterm>

<sect2 role="package">
<title>Introduction to <application>NFS Utilities</application></title>

<para>The <application>NFS Utilities</application> package contains the userspace 
server and client tools necessary to use the kernel's nfs abilities. 
<acronym>NFS</acronym> is a protocol that allows sharing file systems over the 
network.</para>

<bridgehead renderas="sect3">Package information</bridgehead>
<itemizedlist spacing='compact'>
  <listitem><para>Download (HTTP): <ulink url="&nfs-utils-download-http;"/></para></listitem>
  <listitem><para>Download (FTP): <ulink url="&nfs-utils-download-ftp;"/></para></listitem>
  <listitem><para>Download MD5 sum: &nfs-utils-md5sum;</para></listitem>
  <listitem><para>Download size: &nfs-utils-size;</para></listitem>
  <listitem><para>Estimated disk space required: &nfs-utils-buildsize;</para></listitem>
  <listitem><para>Estimated build time: &nfs-utils-time;</para></listitem>
</itemizedlist>

<bridgehead renderas="sect3">NFS Utilities Dependencies</bridgehead>
<bridgehead renderas="sect4">Required</bridgehead>

<para><xref linkend="portmap"/></para>

<bridgehead renderas="sect4">Optional</bridgehead>
<para><ulink url="http://www.monkey.org/~provos/libevent/">libevent</ulink>
and <ulink url="http://www.citi.umich.edu/projects/nfsv4/linux/libnfsidmap/">libnsfidmap</ulink>
for nfsv4 support, and <xref linkend="mitkrb"/> or <xref linkend="heimdal"/>
for gss (RPC Security) support.
</para>

</sect2>

<sect2 role="kernel" id='nfs-utils-kernel'>
<title>Kernel Configuration</title>

<para>Enable the following options in the kernel configuration
and recompile the kernel if neccessary:</para>

<screen><literal>File systems:
  Network File Systems:
    NFS File System Support: M or Y
    NFS Server Support: M or Y</literal></screen>

<para>Select the appropriate sub-options that appear when the above options
are selected.</para>

<indexterm zone="nfs-utils nfs-utils-kernel">
  <primary sortas="d-nfs-utils">NFS Utilities</primary>
</indexterm>
</sect2>

<sect2 role="installation">
<title>Installation of NFS Utilities</title>

<para>Before you compile the program, you need to be sure the <systemitem 
class="username">nobody</systemitem> user and <systemitem 
class="groupname">nogroup</systemitem> group are available. You can add these by
running the following commands as the <systemitem class="username">root</systemitem>
user:</para>

<screen role="root"><userinput>groupadd -g 99 nogroup &amp;&amp;
useradd -c nobody -d /home -g nogroup -s /bin/bash -u 99 nobody</userinput></screen>

<note><para>The classic uid and gid values are 65534 which is also -2 when 
interpreted as a signed 16-bit number.  These values impact other files on
some filesystems that do not have support for sparse files.  The <systemitem 
class="username">nobody</systemitem> and <systemitem 
class="groupname">nogroup</systemitem> values have small impact.  
The impact on a server is nil if the exports file is configured correctly.  If it is misconfigured, 
the impact is that a <command>ls -l</command> or <command>ps</command> listing 
will show a uid or gid number of 65534 instead of a name. The client uses <systemitem 
class="username">nobody</systemitem> only as the user running 
<command>rpc.statd</command>.</para></note>

<para>Install <application>NFS Utilities</application> by running the following commands:</para>

<screen><userinput>./configure --prefix=/usr --sysconfdir=/etc \
    --disable-nfsv4 --disable-gss &amp;&amp;
make</userinput></screen>

<para>Now, as the <systemitem class="username">root</systemitem> user:</para>

<screen role='root'><userinput>make install</userinput></screen>

<note><para>If your <filename class="directory">/usr</filename> directory is 
<acronym>NFS</acronym> mounted, you should install the executables in 
<filename class="directory">/sbin</filename> by passing
an additional parameter <option>--sbindir=/sbin</option> to the above
<command>./configure</command> command.</para></note>

</sect2>

<sect2 role="commands">
<title>Command Explanations</title>

<para><parameter>--disable-nfsv4</parameter>: Disables support  
for <acronym>NFS</acronym> Version 4.</para>

<para><parameter>--disable-gss</parameter>: Disables support for 
<acronym>RPCSEC GSS</acronym> (<acronym>RPC</acronym> Security).</para>

</sect2>

<sect2 role="configuration">
<title>Configuring NFS Utilities</title>

<sect3 id='nfs-utils-server-config'>
<title>Server Configutation</title>

<para><filename>/etc/exports</filename> contains the exported directories on 
<acronym>NFS</acronym> servers. Refer to the exports manual page for
the syntax of this file. Also refer to the "NFS HowTo" available at <ulink
url="http://nfs.sourceforge.net/nfs-howto/"/> on how to configure the servers
and clients in a secure manner. For example, for sharing the
<filename class="directory">/home</filename> directory over the local network, the following line
may be added:</para>

<screen role="root"><userinput>/home 192.168.0.0/255.255.255.0(rw,anonuid=99,anongid=99)</userinput></screen>

<indexterm zone="nfs-utils nfs-utils-server-config">
  <primary sortas="e-etc-exportfs">/etc/exportfs</primary>
</indexterm>

<para>Install the <filename>/etc/rc.d/init.d/nfs-server</filename> init script
included in the <xref linkend="intro-important-bootscripts"/> package to start
the server at boot.</para>

<screen role="root"><userinput>make install-nfs-server</userinput></screen>

<indexterm zone="nfs-utils nfs-utils-server-config">
  <primary sortas="f-nfs-server">nfs-server</primary>
</indexterm>
  
<para>Now create the <filename>/etc/sysconfig/nfs-server</filename> 
configuration file:</para>

<screen role="root"><userinput>cat &gt; /etc/sysconfig/nfs-server &lt;&lt; "EOF"
<literal>PORT="2049"
PROCESSES="8"
QUOTAS="no"
KILLDELAY="10"</literal>
EOF</userinput></screen>

<indexterm zone="nfs-utils nfs-utils-server-config">
  <primary sortas="e-etc-sysconfig-nfs-server">/etc/sysconfig/nfs-server</primary>
</indexterm>

</sect3>

<sect3 id='nfs-utils-client-config'><title>Client Configutation</title>

<para><filename>/etc/fstab</filename> contains the
directories that are to be mounted on the client. Alternately the partitions
can be mounted by using the <command>mount</command> command with the proper
options. To mount the <filename class="directory">/home</filename> and 
<filename class="directory">/usr</filename>
partitions, add the following to the <filename>/etc/fstab</filename>:</para>

<screen role="root"><userinput>&lt;server-name&gt;:/home  /home nfs   rw,_netdev,rsize=8192,wsize=8192 0 0
&lt;server-name&gt;:/usr   /usr  nfs   ro,_netdev,rsize=8192            0 0</userinput></screen>

<indexterm zone="nfs-utils nfs-utils-client-config">
  <primary sortas="e-etc-fstab">/etc/fstab</primary>
</indexterm>


<para>Install the <filename>/etc/rc.d/init.d/nfs-client</filename>
init script included in the
<xref linkend="intro-important-bootscripts"/> package to 
start the client services at boot.</para>

<screen role="root"><userinput>make install-nfs-client</userinput></screen>

<indexterm zone="nfs-utils nfs-utils-client-config">
  <primary sortas="f-nfs-client">nfs-client</primary>
</indexterm>

<para>To automatically mount <systemitem class="filesystem">nfs</systemitem> filesystems, 
clients will also need to install the <filename>netfs</filename> bootscript as described in 
<xref linkend='postlfs-config-netfs'/>.</para>

<indexterm zone="nfs-utils nfs-utils-client-config">
  <primary sortas="f-netfs">netfs</primary>
</indexterm>

</sect3>

</sect2>

<sect2 role="content">
<title>Contents</title>
<segmentedlist>
  <segtitle>Installed Programs</segtitle>
  <segtitle>Installed Libraries</segtitle>
  <segtitle>Installed Directories</segtitle>
 
  <seglistitem>
    <seg>exportfs, nfsstat, nhfsgraph, nhfsnums, nhfsrun, nhfsstone,
         rpc.lockd, rpc.mountd, rpc.nfsd, rpc.rquotad, rpc.statd, and showmount</seg>
    <seg>None</seg>
    <seg>/var/lib/nfs</seg>
  </seglistitem>
</segmentedlist>

<variablelist>
  <bridgehead renderas="sect3">Short Descriptions</bridgehead>
  <?dbfo list-presentation="list"?>
  <?dbhtml list-presentation="table"?>

<varlistentry id="exportfs">
  <term><command>exportfs</command></term>
  <listitem>
    <para>maintains a list of <acronym>NFS</acronym> exported file systems.</para>
    <indexterm zone="nfs-utils exportfs">
      <primary sortas="b-exportfs">exportfs</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="nfsstat">
  <term><command>nfsstat</command></term>
  <listitem>
    <para>prints <acronym>NFS</acronym> statistics.</para>
    <indexterm zone="nfs-utils nfsstat">
      <primary sortas="b-nfsstat">nfsstat</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="nhfsgraph">
  <term><command>nhfsgraph</command></term>
  <listitem>
    <para>runs <command>nhfsstone</command> over multiple loads.</para>
    <indexterm zone="nfs-utils nhfsgraph">
      <primary sortas="b-nhfsgraph">nhfsgraph</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="nhfsnums">
  <term><command>nhfsnums</command></term>
  <listitem>
    <para>converts raw numbers from <command>nhfsstone</command> output 
       into plot format.</para>
    <indexterm zone="nfs-utils nhfsnums">
      <primary sortas="b-nhfsnums">nhfsnums</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="nhfsrun">
  <term><command>nhfsrun</command></term>
  <listitem>
    <para>executes <command>nhfsstone</command> with a range of different loads.</para>
    <indexterm zone="nfs-utils nhfsrun">
      <primary sortas="b-nhfsrun">nhfsrun</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="nhfsstone">
  <term><command>nhfsstone</command></term>
  <listitem>
    <para>is used on a <acronym>NFS</acronym> client to generate an artificial load with a 
          particular mix of <acronym>NFS</acronym> operations.</para>
    <indexterm zone="nfs-utils nhfsstone">
      <primary sortas="b-nhfsstone">nhfsstone</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="rpclockd">
  <term><command>rpc.lockd</command></term>
  <listitem>
    <para>starts the <acronym>NFS</acronym> lock manager (<acronym>NLM</acronym>) 
       on kernels that don't start it automatically.  However, since most kernels do start it 
       automatically it is usually not required.</para>
    <indexterm zone="nfs-utils rpclockd">
      <primary sortas="b-rpclockd">rpc.lockd</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="rpcmountd">
  <term><command>rpc.mountd</command></term>
  <listitem>
    <para>implements the <acronym>NFS</acronym> mount protocol on an 
       <acronym>NFS</acronym> server.</para>
    <indexterm zone="nfs-utils rpcmountd">
      <primary sortas="b-rpcmountd">rpc.mountd</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="rpcnfsd">
  <term><command>rpc.nfsd</command></term>
  <listitem>
    <para>implements the user level part of the <acronym>NFS</acronym> 
       service on the server.</para>
    <indexterm zone="nfs-utils rpcnfsd">
      <primary sortas="b-rpcnfsd">rpc.nfsd</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="rpcrquotad">
  <term><command>rpc.rquotad</command></term>
  <listitem>
    <para>is an rpc server which returns quotas for a user of a local file
       system which is mounted by a remote machine over the <acronym>NFS</acronym>.</para>
    <indexterm zone="nfs-utils rpcrquotad">
      <primary sortas="b-rpcrquotad">rpc.rquotad</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="rpcstatd">
  <term><command>rpc.statd</command></term>
  <listitem>
    <para>is used by the <acronym>NFS</acronym> file locking service, 
       <command>rpc.lockd</command>, to implement lock recovery when the 
       <acronym>NFS</acronym> server machine crashes and reboots. Runs
       on the <acronym>NFS</acronym> server only.</para>
    <indexterm zone="nfs-utils rpcstatd">
      <primary sortas="b-rpcstatd">rpc.statd</primary>
    </indexterm>
  </listitem>
</varlistentry>

<varlistentry id="showmount">
  <term><command>showmount</command></term>
  <listitem>
    <para>displays mount information for an <acronym>NFS</acronym> server.</para>
    <indexterm zone="nfs-utils showmount">
      <primary sortas="b-showmount">showmount</primary>
    </indexterm>
  </listitem>
</varlistentry>


</variablelist>

</sect2>
</sect1>