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-<?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">
-
-<!--
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="systemd.kill">
- <refentryinfo>
- <title>systemd.kill</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>systemd.kill</refentrytitle>
- <manvolnum>5</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd.kill</refname>
- <refpurpose>Process killing procedure
- configuration</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename><replaceable>service</replaceable>.service</filename>,
- <filename><replaceable>socket</replaceable>.socket</filename>,
- <filename><replaceable>mount</replaceable>.mount</filename>,
- <filename><replaceable>swap</replaceable>.swap</filename>,
- <filename><replaceable>scope</replaceable>.scope</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>Unit configuration files for services, sockets, mount
- points, swap devices and scopes share a subset of configuration
- options which define the killing procedure of processes belonging
- to the unit.</para>
-
- <para>This man page lists the configuration options shared by
- these five unit types. See
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- for the common options shared by all unit configuration files, and
- <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- and
- <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- for more information on the configuration file options specific to
- each unit type.</para>
-
- <para>The kill procedure configuration options are configured in
- the [Service], [Socket], [Mount] or [Swap] section, depending on
- the unit type.</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <variablelist class='unit-directives'>
-
- <varlistentry>
- <term><varname>KillMode=</varname></term>
- <listitem><para>Specifies how processes of this unit shall be
- killed. One of
- <option>control-group</option>,
- <option>process</option>,
- <option>mixed</option>,
- <option>none</option>.</para>
-
- <para>If set to <option>control-group</option>, all remaining
- processes in the control group of this unit will be killed on
- unit stop (for services: after the stop command is executed,
- as configured with <varname>ExecStop=</varname>). If set to
- <option>process</option>, only the main process itself is
- killed. If set to <option>mixed</option>, the
- <constant>SIGTERM</constant> signal (see below) is sent to the
- main process while the subsequent <constant>SIGKILL</constant>
- signal (see below) is sent to all remaining processes of the
- unit's control group. If set to <option>none</option>, no
- process is killed. In this case, only the stop command will be
- executed on unit stop, but no process be killed otherwise.
- Processes remaining alive after stop are left in their control
- group and the control group continues to exist after stop
- unless it is empty.</para>
-
- <para>Processes will first be terminated via
- <constant>SIGTERM</constant> (unless the signal to send is
- changed via <varname>KillSignal=</varname>). Optionally, this
- is immediately followed by a <constant>SIGHUP</constant> (if
- enabled with <varname>SendSIGHUP=</varname>). If then, after a
- delay (configured via the <varname>TimeoutStopSec=</varname>
- option), processes still remain, the termination request is
- repeated with the <constant>SIGKILL</constant> signal (unless
- this is disabled via the <varname>SendSIGKILL=</varname>
- option). See
- <citerefentry><refentrytitle>kill</refentrytitle><manvolnum>2</manvolnum></citerefentry>
- for more information.</para>
-
- <para>Defaults to
- <option>control-group</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>KillSignal=</varname></term>
- <listitem><para>Specifies which signal to use when killing a
- service. This controls the signal that is sent as first step
- of shutting down a unit (see above), and is usually followed
- by <constant>SIGKILL</constant> (see above and below). For a
- list of valid signals, see
- <citerefentry project='man-pages'><refentrytitle>signal</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
- Defaults to <constant>SIGTERM</constant>. </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>SendSIGHUP=</varname></term>
- <listitem><para>Specifies whether to send
- <constant>SIGHUP</constant> to remaining processes immediately
- after sending the signal configured with
- <varname>KillSignal=</varname>. This is useful to indicate to
- shells and shell-like programs that their connection has been
- severed. Takes a boolean value. Defaults to "no".
- </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>SendSIGKILL=</varname></term>
- <listitem><para>Specifies whether to send
- <constant>SIGKILL</constant> to remaining processes after a
- timeout, if the normal shutdown procedure left processes of
- the service around. Takes a boolean value. Defaults to "yes".
- </para></listitem>
- </varlistentry>
-
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>kill</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>signal</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>