mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-25 23:21:33 +03:00
183 lines
7.9 KiB
XML
183 lines
7.9 KiB
XML
<?xml version='1.0'?>
|
||
<!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+ -->
|
||
|
||
<refentry id="systemd-socket-activate"
|
||
xmlns:xi="http://www.w3.org/2001/XInclude">
|
||
|
||
<refentryinfo>
|
||
<title>systemd-socket-activate</title>
|
||
<productname>systemd</productname>
|
||
</refentryinfo>
|
||
|
||
<refmeta>
|
||
<refentrytitle>systemd-socket-activate</refentrytitle>
|
||
<manvolnum>1</manvolnum>
|
||
</refmeta>
|
||
|
||
<refnamediv>
|
||
<refname>systemd-socket-activate</refname>
|
||
<refpurpose>Test socket activation of daemons</refpurpose>
|
||
</refnamediv>
|
||
|
||
<refsynopsisdiv>
|
||
<cmdsynopsis>
|
||
<command>systemd-socket-activate</command>
|
||
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
||
<arg choice="plain"><replaceable>daemon</replaceable></arg>
|
||
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
||
</cmdsynopsis>
|
||
</refsynopsisdiv>
|
||
|
||
<refsect1>
|
||
<title>Description</title>
|
||
|
||
<para><command>systemd-socket-activate</command> may be used to launch a socket-activated service program from the
|
||
command line for testing purposes. It may also be used to launch individual instances of the service program per
|
||
connection.
|
||
</para>
|
||
|
||
<para>The daemon to launch and its options should be specified
|
||
after options intended for <command>systemd-socket-activate</command>.
|
||
</para>
|
||
|
||
<para>If the <option>--inetd</option> option is given, the socket file descriptor will be used as the standard
|
||
input and output of the launched process. Otherwise, standard input and output will be inherited, and sockets will
|
||
be passed through file descriptors 3 and higher. Sockets passed through <varname>$LISTEN_FDS</varname> to
|
||
<command>systemd-socket-activate</command> will be passed through to the daemon, in the original positions. Other sockets
|
||
specified with <option>--listen=</option> will use consecutive descriptors. By default,
|
||
<command>systemd-socket-activate</command> listens on a stream socket, use <option>--datagram</option> and
|
||
<option>--seqpacket</option> to listen on datagram or sequential packet sockets instead (see below).
|
||
</para>
|
||
</refsect1>
|
||
|
||
<refsect1>
|
||
<title>Options</title>
|
||
<variablelist>
|
||
<varlistentry>
|
||
<term><option>-l <replaceable>address</replaceable></option></term>
|
||
<term><option>--listen=<replaceable>address</replaceable></option></term>
|
||
|
||
<listitem><para>Listen on this <replaceable>address</replaceable>.
|
||
Takes a string like <literal>2000</literal> or
|
||
<literal>127.0.0.1:2001</literal>.</para>
|
||
</listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-a</option></term>
|
||
<term><option>--accept</option></term>
|
||
|
||
<listitem><para>Launch an instance of the service program for each connection and pass the connection
|
||
socket.</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-d</option></term>
|
||
<term><option>--datagram</option></term>
|
||
|
||
<listitem><para>Listen on a datagram socket (<constant>SOCK_DGRAM</constant>), instead of a stream socket
|
||
(<constant>SOCK_STREAM</constant>). May not be combined with <option>--seqpacket</option>.</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>--seqpacket</option></term>
|
||
|
||
<listitem><para>Listen on a sequential packet socket (<constant>SOCK_SEQPACKET</constant>), instead of a stream
|
||
socket (<constant>SOCK_STREAM</constant>). May not be combined with
|
||
<option>--datagram</option>.</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>--inetd</option></term>
|
||
|
||
<listitem><para>Use the inetd protocol for passing file descriptors, i.e. as standard input and standard
|
||
output, instead of the new-style protocol for passing file descriptors using <varname>$LISTEN_FDS</varname>
|
||
(see above).</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-E <replaceable>VAR</replaceable><optional>=<replaceable>VALUE</replaceable></optional></option></term>
|
||
<term><option>--setenv=<replaceable>VAR</replaceable><optional>=<replaceable>VALUE</replaceable></optional></option></term>
|
||
|
||
<listitem><para>Add this variable to the environment of the
|
||
launched process. If <replaceable>VAR</replaceable> is
|
||
followed by <literal>=</literal>, assume that it is a
|
||
variable–value pair. Otherwise, obtain the value from the
|
||
environment of <command>systemd-socket-activate</command> itself.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>--fdname=</option><replaceable>NAME</replaceable><optional>:<replaceable>NAME</replaceable>…</optional></term>
|
||
|
||
<listitem><para>Specify names for the file descriptors passed. This is equivalent to setting
|
||
<varname>FileDescriptorName=</varname> in socket unit files, and enables use of
|
||
<citerefentry><refentrytitle>sd_listen_fds_with_names</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
|
||
Multiple entries may be specifies using separate options or by separating names with colons
|
||
(<literal>:</literal>) in one option. In case more names are given than descriptors, superfluous ones will be
|
||
ignored. In case less names are given than descriptors, the remaining file descriptors will be unnamed.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<xi:include href="standard-options.xml" xpointer="help" />
|
||
<xi:include href="standard-options.xml" xpointer="version" />
|
||
</variablelist>
|
||
</refsect1>
|
||
|
||
<refsect1>
|
||
<title>Environment variables</title>
|
||
<variablelist class='environment-variables'>
|
||
<varlistentry>
|
||
<term><varname>$LISTEN_FDS</varname></term>
|
||
<term><varname>$LISTEN_PID</varname></term>
|
||
<term><varname>$LISTEN_FDNAMES</varname></term>
|
||
|
||
<listitem><para>See
|
||
<citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><varname>$SYSTEMD_LOG_TARGET</varname></term>
|
||
<term><varname>$SYSTEMD_LOG_LEVEL</varname></term>
|
||
<term><varname>$SYSTEMD_LOG_TIME</varname></term>
|
||
<term><varname>$SYSTEMD_LOG_COLOR</varname></term>
|
||
<term><varname>$SYSTEMD_LOG_LOCATION</varname></term>
|
||
|
||
<listitem><para>Same as in
|
||
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
</refsect1>
|
||
|
||
<refsect1>
|
||
<title>Examples</title>
|
||
|
||
<example>
|
||
<title>Run an echo server on port 2000</title>
|
||
|
||
<programlisting>$ systemd-socket-activate -l 2000 --inetd -a cat</programlisting>
|
||
</example>
|
||
|
||
<example>
|
||
<title>Run a socket-activated instance of <citerefentry><refentrytitle>systemd-journal-gatewayd</refentrytitle><manvolnum>8</manvolnum></citerefentry></title>
|
||
|
||
<programlisting>$ systemd-socket-activate -l 19531 /usr/lib/systemd/systemd-journal-gatewayd</programlisting>
|
||
</example>
|
||
</refsect1>
|
||
|
||
<refsect1>
|
||
<title>See Also</title>
|
||
<para>
|
||
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>sd_listen_fds_with_names</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
|
||
<citerefentry project='man-pages'><refentrytitle>cat</refentrytitle><manvolnum>1</manvolnum></citerefentry>
|
||
</para>
|
||
</refsect1>
|
||
</refentry>
|