nss-mymachines.xml revision 12b42c76672a66c2d4ea7212c14f8f1b5a62b78d
<?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">
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Copyright 2014 Lennart Poettering
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<refentry id="nss-mymachines" conditional='ENABLE_MACHINED'>
<refentryinfo>
<title>nss-mymachines</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-mymachines</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>nss-mymachines</refname>
<refname>libnss_mymachines.so.2</refname>
<refpurpose>Provide hostname resolution for local
container instances.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>libnss_mymachines.so.2</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>nss-mymachines</command> is a plugin for the GNU
Name Service Switch (NSS) functionality of the GNU C Library
(<command>glibc</command>) providing hostname resolution for
containers running locally, that are registered with
<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
The container names are resolved to IP addresses of the specific
container, ordered by their scope.</para>
<para>To activate the NSS modules, <literal>mymachines</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>mymachines</literal>
near the end of 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>mymachines</command> correctly:</para>
<programlisting>passwd: compat
group: compat
shadow: compat
hosts: files dns <command>mymachines</command> myhostname
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis</programlisting>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>nss-myhostname</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>