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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>systemd.kill</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
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</style><a href="index.html">Index </a>·
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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">libudev </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 217</span><hr><div class="refentry"><a name="systemd.kill"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd.kill — Process killing procedure
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configuration</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename"><em class="replaceable"><code>service</code></em>.service</code>,
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<code class="filename"><em class="replaceable"><code>socket</code></em>.socket</code>,
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<code class="filename"><em class="replaceable"><code>mount</code></em>.mount</code>,
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<code class="filename"><em class="replaceable"><code>swap</code></em>.swap</code>,
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<code class="filename"><em class="replaceable"><code>scope</code></em>.scope</code></p></div><div class="refsect1"><a name="idm214192753776"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>Unit configuration files for services, sockets,
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mount points, swap devices and scopes share a subset
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of configuration options which define the
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killing procedure of processes belonging to the unit.</p><p>This man page lists the configuration options
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shared by these five unit types. See
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<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>
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for the common options shared by all unit
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configuration files, and
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<a href="systemd.service.html"><span class="citerefentry"><span class="refentrytitle">systemd.service</span>(5)</span></a>,
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<a href="systemd.socket.html"><span class="citerefentry"><span class="refentrytitle">systemd.socket</span>(5)</span></a>,
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<a href="systemd.swap.html"><span class="citerefentry"><span class="refentrytitle">systemd.swap</span>(5)</span></a>,
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<a href="systemd.mount.html"><span class="citerefentry"><span class="refentrytitle">systemd.mount</span>(5)</span></a>
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and
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<a href="systemd.scope.html"><span class="citerefentry"><span class="refentrytitle">systemd.scope</span>(5)</span></a>
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for more information on the configuration file options
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specific to each unit type.</p><p>The kill procedure
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configuration options are configured in the [Service],
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[Socket], [Mount] or [Swap] section, depending on the
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unit type.</p></div><div class="refsect1"><a name="idm214192746032"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><div class="variablelist"><dl class="variablelist"><dt id="KillMode="><span class="term"><code class="varname">KillMode=</code></span><a class="headerlink" title="Permalink to this term" href="#KillMode=">¶</a></dt><dd><p>Specifies how
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processes of this unit shall be
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killed. One of
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<code class="option">control-group</code>,
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<code class="option">process</code>,
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<code class="option">mixed</code>,
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<code class="option">none</code>.</p><p>If set to
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<code class="option">control-group</code>, all
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remaining processes in the control
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group of this unit will be killed on
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unit stop (for services: after the
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stop command is executed, as
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configured with
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<code class="varname">ExecStop=</code>). If set
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to <code class="option">process</code>, only the
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main process itself is killed. If set
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to <code class="option">mixed</code>, the
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<code class="constant">SIGTERM</code> signal
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(see below) is sent to the main
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process while the subsequent
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<code class="constant">SIGKILL</code> signal
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(see below) is sent to all remaining
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processes of the unit's control
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group. If set to
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<code class="option">none</code>, no process is
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killed. In this case, only the stop
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command will be executed on unit stop,
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but no process be killed
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otherwise. Processes remaining alive
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after stop are left in their control
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group and the control group continues
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to exist after stop unless it is
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empty.</p><p>Processes will first be
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terminated via
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<code class="constant">SIGTERM</code> (unless
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the signal to send is changed via
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<code class="varname">KillSignal=</code>). Optionally,
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this is immediately followed by a
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<code class="constant">SIGHUP</code> (if
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enabled with
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<code class="varname">SendSIGHUP=</code>). If
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then, after a delay (configured via the
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<code class="varname">TimeoutStopSec=</code> option),
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processes still remain, the
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termination request is repeated with
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the <code class="constant">SIGKILL</code>
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signal (unless this is disabled via
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the <code class="varname">SendSIGKILL=</code>
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option). See
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<a href="http://man7.org/linux/man-pages/man2/kill.2.html"><span class="citerefentry"><span class="refentrytitle">kill</span>(2)</span></a>
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for more
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information.</p><p>Defaults to
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<code class="option">control-group</code>.</p></dd><dt id="KillSignal="><span class="term"><code class="varname">KillSignal=</code></span><a class="headerlink" title="Permalink to this term" href="#KillSignal=">¶</a></dt><dd><p>Specifies which signal
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to use when killing a service. This
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controls the signal that is sent as
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first step of shutting down a unit
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(see above), and is usually followed
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by <code class="constant">SIGKILL</code> (see
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above and below). For a list of valid
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signals, see
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<a href="signal.html"><span class="citerefentry"><span class="refentrytitle">signal</span>(7)</span></a>. Defaults
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to <code class="constant">SIGTERM</code>.
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</p></dd><dt id="SendSIGHUP="><span class="term"><code class="varname">SendSIGHUP=</code></span><a class="headerlink" title="Permalink to this term" href="#SendSIGHUP=">¶</a></dt><dd><p>Specifies whether to
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send <code class="constant">SIGHUP</code> to
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remaining processes immediately after
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sending the signal configured with
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<code class="varname">KillSignal=</code>. This
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is useful to indicate to shells and
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shell-like programs that their
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connection has been severed. Takes a
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boolean value. Defaults to "no".
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</p></dd><dt id="SendSIGKILL="><span class="term"><code class="varname">SendSIGKILL=</code></span><a class="headerlink" title="Permalink to this term" href="#SendSIGKILL=">¶</a></dt><dd><p>Specifies whether to
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send <code class="constant">SIGKILL</code> to remaining processes
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after a timeout, if the normal
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shutdown procedure left processes of
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the service around. Takes a boolean
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value. Defaults to "yes".
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</p></dd></dl></div></div><div class="refsect1"><a name="idm214196666000"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>,
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<a href="journalctl.html"><span class="citerefentry"><span class="refentrytitle">journalctl</span>(8)</span></a>,
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<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>,
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<a href="systemd.service.html"><span class="citerefentry"><span class="refentrytitle">systemd.service</span>(5)</span></a>,
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<a href="systemd.socket.html"><span class="citerefentry"><span class="refentrytitle">systemd.socket</span>(5)</span></a>,
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<a href="systemd.swap.html"><span class="citerefentry"><span class="refentrytitle">systemd.swap</span>(5)</span></a>,
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<a href="systemd.mount.html"><span class="citerefentry"><span class="refentrytitle">systemd.mount</span>(5)</span></a>,
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<a href="systemd.exec.html"><span class="citerefentry"><span class="refentrytitle">systemd.exec</span>(5)</span></a>,
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<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>,
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<a href="http://man7.org/linux/man-pages/man2/kill.2.html"><span class="citerefentry"><span class="refentrytitle">kill</span>(2)</span></a>,
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<a href="signal.html"><span class="citerefentry"><span class="refentrytitle">signal</span>(7)</span></a>
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</p></div></div></body></html>
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