tree-wide: use "hostname" spelling everywhere

[thirdparty/systemd.git] / man / nss-resolve.xml

diff --git a/man/nss-resolve.xml b/man/nss-resolve.xml
index 960d580003d451ce23508314c59a4cb04b83e629..8bc75b1316038901311fc7ab86b14561e66e5d47 100644 (file)
--- a/man/nss-resolve.xml
+++ b/man/nss-resolve.xml
@@ -1,10 +1,7 @@
 <?xml version='1.0'?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
-  SPDX-License-Identifier: LGPL-2.1+
--->
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
 
 <refentry id="nss-resolve" conditional='ENABLE_NSS_RESOLVE'>
 
@@ -32,19 +29,20 @@
     <title>Description</title>
 
     <para><command>nss-resolve</command> is a plug-in module for the GNU Name Service Switch (NSS) functionality of the
-    GNU C Library (<command>glibc</command>) enabling it to resolve host names via the
+    GNU C Library (<command>glibc</command>) enabling it to resolve hostnames via the
     <citerefentry><refentrytitle>systemd-resolved</refentrytitle><manvolnum>8</manvolnum></citerefentry> local network
     name resolution service. It replaces the <command>nss-dns</command> plug-in module that traditionally resolves
     hostnames via DNS.</para>
 
-    <para>To activate the NSS module, add <literal>resolve</literal> to the line starting with
-    <literal>hosts:</literal> in <filename>/etc/nsswitch.conf</filename>. Specifically, it is recommended to place
-    <literal>resolve</literal> early in <filename>/etc/nsswitch.conf</filename>'s <literal>hosts:</literal> line (but
-    after the <literal>files</literal> or <literal>mymachines</literal> entries), right before the
-    <literal>dns</literal> entry if it exists, followed by <literal>[!UNAVAIL=return]</literal>, to ensure DNS queries
-    are always routed via
-    <citerefentry><refentrytitle>systemd-resolved</refentrytitle><manvolnum>8</manvolnum></citerefentry> if it is
-    running, but are routed to <command>nss-dns</command> if this service is not available.</para>
+    <para>To activate the NSS module, add <literal>resolve [!UNAVAIL=return]</literal> to the line starting
+    with <literal>hosts:</literal> in <filename>/etc/nsswitch.conf</filename>. Specifically, it is
+    recommended to place <literal>resolve</literal> early in <filename>/etc/nsswitch.conf</filename>'s
+    <literal>hosts:</literal> line. It should be before the <literal>files</literal> entry, since
+    <filename>systemd-resolved</filename> supports <filename>/etc/hosts</filename> internally, but with
+    caching. To the contrary, it should be after <literal>mymachines</literal>, to give hostnames given to
+    local VMs and containers precedence over names received over DNS. Finally, we recommend placing
+    <literal>dns</literal> somewhere after <literal>resolve</literal>, to fall back to
+    <command>nss-dns</command> if <filename>systemd-resolved.service</filename> is not available.</para>
 
     <para>Note that <command>systemd-resolved</command> will synthesize DNS resource
     records in a few cases, for example for <literal>localhost</literal> and the
@@ -69,7 +67,7 @@
 group:          compat mymachines systemd
 shadow:         compat
 
-hosts:          files mymachines <command>resolve [!UNAVAIL=return]</command> dns myhostname
+hosts:          mymachines <command>resolve [!UNAVAIL=return]</command> myhostname files dns
 networks:       files
 
 protocols:      db files