source: server/other/leafnode.xml@ 9f729d3

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
   "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

<!ENTITY leafnode-download-http "http://prdownloads.sourceforge.net/leafnode/leafnode-&leafnode-version;.rel.tar.bz2">
<!ENTITY leafnode-download-ftp "ftp://ftp.gwdg.de/pub/linux/mirrors/sunsite/system/news/transport/leafnode-&leafnode-version;.rel.tar.bz2">
<!ENTITY leafnode-size "383 KB">
<!ENTITY leafnode-buildsize "8.8 MB">
<!ENTITY leafnode-time "0.11 SBU">

]>

<sect1 id="leafnode" xreflabel="Leafnode-&leafnode-version;">
<?dbhtml filename="leafnode.html"?>
<title>Leafnode-&leafnode-version;</title>

<sect2>
<title>Introduction to <application>Leafnode</application></title>

<para><application>Leafnode</application> is an <acronym>NNTP</acronym>
server designed for small sites to provide a local USENET spool.</para>

<sect3><title>Package information</title>
<itemizedlist spacing='compact'>
<listitem><para>Download (HTTP): <ulink url="&leafnode-download-http;"/></para></listitem>
<listitem><para>Download (FTP): <ulink url="&leafnode-download-ftp;"/></para></listitem>
<listitem><para>Download size: &leafnode-size;</para></listitem>
<listitem><para>Estimated Disk space required: &leafnode-buildsize;</para></listitem>
<listitem><para>Estimated build time: &leafnode-time;</para></listitem></itemizedlist>
</sect3>

<sect3><title><application>Leafnode</application> dependencies</title>
<sect4><title>Required</title>
<para><xref linkend="pcre"/> and <xref linkend="tcpwrappers"/>
</para></sect4>
<sect4><title>Recommended</title>
<para><xref linkend="xinetd"/></para></sect4>
</sect3>

</sect2>

<sect2>
<title>Installation of <application>Leafnode</application></title>

<para>Create the group and user news, if not present:</para>

<screen><userinput><command>groupadd news &amp;&amp;
useradd -g news news</command></userinput></screen>

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

<screen><userinput><command>./configure --prefix=/usr \
    --localstatedir=/var --sysconfdir=/etc/leafnode \
    --with-lockfile=/var/lock/leafnode/fetchnews.lck &amp;&amp;
make &amp;&amp;
make install</command></userinput></screen>
<!-- ldconfig &amp;&amp; -->
<!-- make update</command></userinput></screen> -->

</sect2>

<sect2>
<title>Installation command explanations</title>

<para><parameter>--localstatedir=/var</parameter>: Change the default
spool directory of <filename class="directory">/usr/var</filename>.</para>

<para><parameter>--sysconfdir=/etc/leafnode</parameter>: 
<application>Leafnode</application> reads its configuration data from a file 
called <filename>config</filename> which will be created in 
<filename class="directory">/etc/leafnode</filename> to
avoid any potential conflict with other packages.</para>

<para><command>make update</command>: Run this command if you are upgrading
from a very old version of <application>Leafnode</application>.</para>

</sect2>

<sect2>
<title>Configuring <application>Leafnode</application></title>

<sect3><title>Config files</title>
<para><filename>/etc/leafnode/config</filename>,
<filename>/etc/xinetd.conf</filename> or
<filename>/etc/inetd.conf</filename></para></sect3>

<sect3><title>Configuration commands</title>

<para>The <filename>/etc/leafnode/config</filename> file must be
edited to reflect the name of the upstream <acronym>NNTP</acronym>
provider. Copy the example configuration file to 
<filename>/etc/leafnode/config</filename> and save the original for 
reference:</para>

<screen><userinput><command>cp /etc/leafnode/config.example /etc/leafnode/config</command></userinput></screen>

<para>Change the
<screen><userinput>server = </userinput></screen>
entry to reflect your news provider.</para>

<para>The <filename>/etc/nntpserver</filename> file must contain 127.0.0.1 to 
prevent news clients from reading news from the upstream feed. Create this 
file using the following command:</para>

<screen><userinput><command>cat &gt; /etc/nntpserver &lt;&lt; "EOF"</command>
127.0.0.1
<command>EOF</command></userinput></screen>

<para>The <command>/etc/rc.d/init.d/cleanfs</command> script, part of the 
<acronym>LFS</acronym> bootscript package, will remove the 
<filename class="directory">/var/lock/leafnode</filename> directory during
the system boot sequence. Install the following line in the 
<filename>/etc/sysconfig/createfiles</filename> file to re-create the 
directory:</para>

<screen><userinput>/var/lock/leafnode   dir   2775   news   news</userinput></screen>

<para><application>Leafnode</application> may be configured to use
<command>inetd</command> by adding an entry to the 
<filename>/etc/inetd.conf</filename> file with the following
command:</para>

<screen><userinput><command>echo "nntp stream tcp nowait news /usr/sbin/tcpd /usr/sbin/leafnode" \
&gt;&gt; /etc/inetd.conf</command></userinput></screen>

<para>Issue a <command>killall -HUP inetd</command> to reread the
changed <filename>inetd.conf</filename> file.</para>

<para>Alternatively, <application>Leafnode</application> may be configured to 
use <command>xinetd</command> by adding an entry to the 
<filename>/etc/xinetd.conf</filename> file with the following command:</para>

<screen><userinput><command>cat &gt;&gt; /etc/xinetd.conf &lt;&lt; "EOF"</command>
        service nntp
        {
           flags           = NAMEINARGS NOLIBWRAP
           socket_type     = stream
           protocol        = tcp
           wait            = no
           user            = news
           server          = /usr/sbin/tcpd
           server_args     = /usr/sbin/leafnode
           instances       = 7
           per_source      = 3
        }
<command>EOF</command></userinput></screen>

<para>Issue a <command>killall -HUP xinetd</command> to reread the
changed <filename>xinetd.conf</filename> file.</para>

<para>Add entries to the root or news user's crontab to run the 
<command>fetchnews</command> and <command>texpire</command> commands at the
desired time intervals.</para>

</sect3>

</sect2>

<sect2>
<title>Contents</title>

<para>The <application>Leafnode</application> package contains
<command>leafnode-version</command>,
<command>leafnode</command>,
<command>applyfilter</command>,
<command>texpire</command>,
<command>checkgroups</command>,
<command>fetchnews</command> and
<command>newsq.</command></para>
</sect2>

<sect2><title>Description</title>

<sect3><title>leafnode-version</title>
<para><command>leafnode-version</command> prints the leafnode
version.</para></sect3>

<sect3><title>leafnode</title>
<para><command>leafnode</command> is the <acronym>NNTP</acronym> 
server daemon.</para></sect3>

<sect3><title>applyfilter</title>
<para><command>applyfilter</command> filters newsgroup articles according 
to regular expressions.</para></sect3>

<sect3><title>texpire</title>
<para><command>texpire</command> expires old articles and unread 
groups.</para></sect3>

<sect3><title>checkgroups</title>
<para><command>checkgroups</command> inserts newsgroup titles into the 
newsgroup database.</para></sect3>

<sect3><title>fetchnews</title>
<para><command>fetchnews</command> sends posted articles to and retrieves 
new articles from an upstream news server.</para></sect3>

<sect3><title>newsq</title>
<para><command>newsq</command> shows articles waiting to be sent 
upstream.</para></sect3>

</sect2>

</sect1>