a8ba86ce6a
Show the same recommended example file in all three man pages, just highlight the different, relevant parts. This should be less confusing for users, and clarify what we actually recommend how /etc/nsswitch.conf is set up.
119 lines
4.1 KiB
XML
119 lines
4.1 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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Copyright 2013 Tom Gundersen
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="nss-resolve" conditional='ENABLE_RESOLVED'>
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<refentryinfo>
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<title>nss-resolve</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>nss-resolve</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>nss-resolve</refname>
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<refname>libnss_resolve.so.2</refname>
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<refpurpose>Provide hostname resolution via <filename>systemd-resolved.service</filename></refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>libnss_resolve.so.2</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>nss-resolve</command> is a plugin module for the
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GNU Name Service Switch (NSS) functionality of the GNU C Library
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(<command>glibc</command>) enabling it to resolve host names via
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the
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<citerefentry><refentrytitle>systemd-resolved</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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local network name resolution service.</para>
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<para>To activate the NSS module, <literal>resolve</literal>
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has to be added to the line starting with
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<literal>hosts:</literal> in
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<filename>/etc/nsswitch.conf</filename>.</para>
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<para>It is recommended to place <literal>resolve</literal> early
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in the <filename>nsswitch.conf</filename> line (but after the
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<literal>files</literal> entry), replacing the
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<literal>dns</literal> entry if it exists, to ensure DNS queries
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are always routed via
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<citerefentry><refentrytitle>systemd-resolved</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<para>Here's an example <filename>/etc/nsswitch.conf</filename>
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file, that enables <command>resolve</command> correctly:</para>
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<programlisting>passwd: compat mymachines
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group: compat mymachines
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shadow: compat
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hosts: files <command>resolve</command> mymachines myhostname
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networks: files
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protocols: db files
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services: db files
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ethers: db files
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rpc: db files
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netgroup: nis</programlisting>
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<para>Note that <command>nss-resolve</command> will chain-load
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<command>nss-dns</command> if
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<filename>systemd-resolved.service</filename> is not running,
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ensuring that basic DNS resolution continues to work if the
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service is down.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-resolved</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>nss-mymachines</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>nss-myhostname</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>nsswitch.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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