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1 | <?xml version='1.0'?> <!--*-nxml-*--> |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
4 | ||
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2014 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | --> | |
23 | ||
24 | <refentry id="nss-mymachines" conditional='ENABLE_MACHINED'> | |
25 | ||
26 | <refentryinfo> | |
27 | <title>nss-mymachines</title> | |
28 | <productname>systemd</productname> | |
29 | ||
30 | <authorgroup> | |
31 | <author> | |
32 | <contrib>Developer</contrib> | |
33 | <firstname>Lennart</firstname> | |
34 | <surname>Poettering</surname> | |
35 | <email>lennart@poettering.net</email> | |
36 | </author> | |
37 | </authorgroup> | |
38 | </refentryinfo> | |
39 | ||
40 | <refmeta> | |
41 | <refentrytitle>nss-mymachines</refentrytitle> | |
42 | <manvolnum>8</manvolnum> | |
43 | </refmeta> | |
44 | ||
45 | <refnamediv> | |
46 | <refname>nss-mymachines</refname> | |
47 | <refname>libnss_mymachines.so.2</refname> | |
48 | <refpurpose>Provide hostname resolution for local | |
49 | container instances.</refpurpose> | |
50 | </refnamediv> | |
51 | ||
52 | <refsynopsisdiv> | |
53 | <para><filename>libnss_mymachines.so.2</filename></para> | |
54 | </refsynopsisdiv> | |
55 | ||
56 | <refsect1> | |
57 | <title>Description</title> | |
58 | ||
59 | <para><command>nss-mymachines</command> is a plugin | |
60 | for the GNU Name Service Switch (NSS) functionality of | |
61 | the GNU C Library (<command>glibc</command>) providing | |
62 | hostname resolution for containers running locally, | |
63 | that are registered with | |
64 | <citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. The | |
65 | container names are resolved to IP addresses of the | |
66 | specific container, ordered by their scope.</para> | |
67 | ||
68 | <para>To activate the NSS modules, | |
69 | <literal>mymachines</literal> has to be added to the | |
70 | line starting with <literal>hosts:</literal> in | |
71 | <filename>/etc/nsswitch.conf</filename>.</para> | |
72 | ||
73 | <para>It is recommended to place | |
74 | <literal>mymachines</literal> near the end of the | |
75 | <filename>nsswitch.conf</filename> line to make sure | |
76 | that this mapping is only used as fallback, and any | |
77 | DNS or <filename>/etc/hosts</filename> based mapping | |
78 | takes precedence.</para> | |
79 | </refsect1> | |
80 | ||
81 | <refsect1> | |
82 | <title>Example</title> | |
83 | ||
84 | <para>Here's an example | |
85 | <filename>/etc/nsswitch.conf</filename> file, that | |
86 | enables <command>mymachines</command> | |
87 | correctly:</para> | |
88 | ||
89 | <programlisting>passwd: compat | |
90 | group: compat | |
91 | shadow: compat | |
92 | ||
93 | hosts: files dns <command>mymachines</command> myhostname | |
94 | networks: files | |
95 | ||
96 | protocols: db files | |
97 | services: db files | |
98 | ethers: db files | |
99 | rpc: db files | |
100 | ||
101 | netgroup: nis</programlisting> | |
102 | ||
103 | </refsect1> | |
104 | ||
105 | <refsect1> | |
106 | <title>See Also</title> | |
107 | <para> | |
108 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
109 | <citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
110 | <citerefentry><refentrytitle>nss-myhostname</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
111 | <citerefentry project='man-pages'><refentrytitle>nsswitch.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
112 | <citerefentry project='man-pages'><refentrytitle>getent</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
113 | </para> | |
114 | </refsect1> | |
115 | ||
116 | </refentry> |