man: Add xinclude namespace

[thirdparty/systemd.git] / man / systemd.kill.xml

diff --git a/man/systemd.kill.xml b/man/systemd.kill.xml
index 6a1c67d4063f8451400c0877cfafcf77619673b9..862e2284274f6ef19c3743a960be7b76d5cb2b6a 100644 (file)
--- a/man/systemd.kill.xml
+++ b/man/systemd.kill.xml
@@ -1,9 +1,9 @@
 <?xml version='1.0'?> <!--*-nxml-*-->
 <!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-or-later -->
 
-<refentry id="systemd.kill">
+<refentry id="systemd.kill" xmlns:xi="http://www.w3.org/2001/XInclude">
   <refentryinfo>
     <title>systemd.kill</title>
     <productname>systemd</productname>
@@ -61,35 +61,39 @@
 
       <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>,
+        <listitem><para>Specifies how processes of this unit shall be killed. One of
+        <option>control-group</option>, <option>mixed</option>, <option>process</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 will 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>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>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>process</option>, only the main process itself is killed (not
+        recommended!). If set to <option>none</option>, no process is killed (strongly recommended
+        against!). In this case, only the stop command will be executed on unit stop, but no process will be
+        killed otherwise.  Processes remaining alive after stop are left in their control group and the
+        control group continues to exist after stop unless empty.</para>
+
+        <para>Note that it is not recommended to set <varname>KillMode=</varname> to
+        <constant>process</constant> or even <constant>none</constant>, as this allows processes to escape
+        the service manager's lifecycle and resource management, and to remain running even while their
+        service is considered stopped and is assumed to not consume any resources.</para>
 
         <para>Processes will first be terminated via <constant>SIGTERM</constant> (unless the signal to send
         is changed via <varname>KillSignal=</varname> or <varname>RestartKillSignal=</varname>). Optionally,
         this is immediately followed by a <constant>SIGHUP</constant> (if enabled with
-        <varname>SendSIGHUP=</varname>). If processes still remain after the main process of a unit has
-        exited or the delay configured via the <varname>TimeoutStopSec=</varname> has passed, the termination
-        request is repeated with the <constant>SIGKILL</constant> signal or the signal specified via
+        <varname>SendSIGHUP=</varname>). If processes still remain after:
+        <itemizedlist>
+          <listitem><para>the main process of a unit has exited (applies to <varname>KillMode=</varname>:
+              <option>mixed</option>)</para></listitem>
+          <listitem><para>the delay configured via the <varname>TimeoutStopSec=</varname> has passed
+              (applies to <varname>KillMode=</varname>: <option>control-group</option>, <option>mixed</option>,
+              <option>process</option>)</para></listitem>
+        </itemizedlist>
+
+        the termination request is repeated with the <constant>SIGKILL</constant> signal or the signal specified via
         <varname>FinalKillSignal=</varname> (unless this is disabled via the <varname>SendSIGKILL=</varname>
         option). See <citerefentry><refentrytitle>kill</refentrytitle><manvolnum>2</manvolnum></citerefentry>
         for more information.</para>
@@ -154,7 +158,7 @@
         terminate upon receiving the initial <constant>SIGTERM</constant>
         signal. This can be achieved by configuring <varname>LimitCORE=</varname>
         and setting <varname>FinalKillSignal=</varname> to either
-        <constant>SIGQUIT</constant> or <constant>SIGABRT</constant>
+        <constant>SIGQUIT</constant> or <constant>SIGABRT</constant>.
         Defaults to <constant>SIGKILL</constant>.
         </para></listitem>
       </varlistentry>