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Diffstat (limited to 'man/nss-myhostname.xml')
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diff --git a/man/nss-myhostname.xml b/man/nss-myhostname.xml deleted file mode 100644 index cf2b0200f..000000000 --- a/man/nss-myhostname.xml +++ /dev/null @@ -1,152 +0,0 @@ -<?xml version='1.0'?> <!--*-nxml-*--> -<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" - "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> - -<!-- - This file is part of systemd. - - Copyright 2011 Lennart Poettering - Copyright 2013 Tom Gundersen - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. ---> - -<refentry id="nss-myhostname" conditional='HAVE_MYHOSTNAME'> - - <refentryinfo> - <title>nss-myhostname</title> - <productname>systemd</productname> - - <authorgroup> - <author> - <contrib>Developer</contrib> - <firstname>Lennart</firstname> - <surname>Poettering</surname> - <email>lennart@poettering.net</email> - </author> - </authorgroup> - </refentryinfo> - - <refmeta> - <refentrytitle>nss-myhostname</refentrytitle> - <manvolnum>8</manvolnum> - </refmeta> - - <refnamediv> - <refname>nss-myhostname</refname> - <refname>libnss_myhostname.so.2</refname> - <refpurpose>Provide hostname resolution for the locally - configured system hostname.</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <para><filename>libnss_myhostname.so.2</filename></para> - </refsynopsisdiv> - - <refsect1> - <title>Description</title> - - <para><command>nss-myhostname</command> is a plugin for the GNU - Name Service Switch (NSS) functionality of the GNU C Library - (<command>glibc</command>) primarily providing hostname resolution - for the locally configured system hostname as returned by - <citerefentry><refentrytitle>gethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry>. - The precise hostnames resolved by this module are:</para> - - <itemizedlist> - <listitem><para>The local, configured hostname is resolved to - all locally configured IP addresses ordered by their scope, or - — if none are configured — the IPv4 address 127.0.0.2 (which - is on the local loopback) and the IPv6 address ::1 (which is the - local host).</para></listitem> - - <listitem><para>The hostname <literal>localhost</literal> is - resolved to the IP addresses 127.0.0.1 and - ::1.</para></listitem> - - <listitem><para>The hostname <literal>gateway</literal> is - resolved to all current default routing gateway addresses, - ordered by their metric. This assigns a stable hostname to the - current gateway, useful for referencing it independently of the - current network configuration state.</para></listitem> - - </itemizedlist> - - <para>Various software relies on an always-resolvable local - hostname. When using dynamic hostnames, this is traditionally - achieved by patching <filename>/etc/hosts</filename> at the same - time as changing the hostname. This is problematic since it - requires a writable <filename>/etc</filename> file system and is - fragile because the file might be edited by the administrator at - the same time. With <command>nss-myhostname</command> enabled - changing <filename>/etc/hosts</filename> is unncessary, and on - many systems the file becomes entirely optional.</para> - - <para>To activate the NSS modules, <literal>myhostname</literal> - has to be added to the line starting with - <literal>hosts:</literal> in - <filename>/etc/nsswitch.conf</filename>.</para> - - <para>It is recommended to place <literal>myhostname</literal> - last in the <filename>nsswitch.conf</filename> line to make sure - that this mapping is only used as fallback, and any DNS or - <filename>/etc/hosts</filename> based mapping takes - precedence.</para> - </refsect1> - - <refsect1> - <title>Example</title> - - <para>Here's an example <filename>/etc/nsswitch.conf</filename> - file, that enables <command>myhostname</command> correctly:</para> - -<programlisting>passwd: compat -group: compat -shadow: compat - -hosts: files dns mymachines <command>myhostname</command> -networks: files - -protocols: db files -services: db files -ethers: db files -rpc: db files - -netgroup: nis</programlisting> - - <para>To test, use <command>glibc</command>'s <command>getent</command> tool:</para> - - <programlisting>$ getent ahosts `hostname` -::1 STREAM omega -::1 DGRAM -::1 RAW -127.0.0.2 STREAM -127.0.0.2 DGRAM -127.0.0.2 RAW</programlisting> - - <para>In this case the local hostname is <varname>omega</varname>.</para> - - </refsect1> - - <refsect1> - <title>See Also</title> - <para> - <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>nss-mymachines</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>nsswitch.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>getent</refentrytitle><manvolnum>1</manvolnum></citerefentry> - </para> - </refsect1> - -</refentry> |