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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 2013 Zbigniew Jędrzejewski-Szmek

  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="machinectl" conditional='ENABLE_MACHINED'>

        <refentryinfo>
                <title>machinectl</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>machinectl</refentrytitle>
                <manvolnum>1</manvolnum>
        </refmeta>

        <refnamediv>
                <refname>machinectl</refname>
                <refpurpose>Control the systemd machine manager</refpurpose>
        </refnamediv>

        <refsynopsisdiv>
                <cmdsynopsis>
                        <command>machinectl</command>
                        <arg choice="opt" rep="repeat">OPTIONS</arg>
                        <arg choice="req">COMMAND</arg>
                        <arg choice="opt" rep="repeat">NAME</arg>
                </cmdsynopsis>
        </refsynopsisdiv>

        <refsect1>
                <title>Description</title>

                <para><command>machinectl</command> may be used to
                introspect and control the state of the
                <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                virtual machine and container registration manager <citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
        </refsect1>

        <refsect1>
                <title>Options</title>

                <para>The following options are understood:</para>

                <variablelist>
                        <varlistentry>
                                <term><option>-h</option></term>
                                <term><option>--help</option></term>

                                <listitem><para>Prints a short help
                                text and exits.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>--version</option></term>

                                <listitem><para>Prints a short version
                                string and exits.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>--no-pager</option></term>

                                <listitem><para>Do not pipe output into a
                                pager.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>--no-ask-password</option></term>

                                <listitem><para>Do not query the user
                                for authentication for privileged
                                operations.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-H</option></term>
                                <term><option>--host=</option></term>

                                <listitem><para>Execute the operation
                                remotely. Specify a hostname, or
                                username and hostname separated by <literal>@</literal>,
                                to connect to. This will use SSH to
                                talk to the remote machine manager
                                instance.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-M</option></term>
                                <term><option>--machine=</option></term>

                                <listitem><para>Execute the operation on a
                                local container. Specify a container
                                name to connect to.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-p</option></term>
                                <term><option>--property=</option></term>

                                <listitem><para>When showing
                                machine properties, limit the
                                output to certain properties as
                                specified by the argument. If not
                                specified, all set properties are
                                shown. The argument should be a
                                property name, such as
                                <literal>Name</literal>. If
                                specified more than once, all
                                properties with the specified names
                                are shown.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-a</option></term>
                                <term><option>--all</option></term>

                                <listitem><para>When showing
                                machine properties, show all
                                properties regardless of whether they are
                                set or not.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-l</option></term>
                                <term><option>--full</option></term>

                                <listitem><para>Do not ellipsize
                                process tree entries.</para>
                                </listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>--kill-who=</option></term>

                                <listitem><para>When used with
                                <command>kill-machine</command>,
                                choose which processes to kill. Must
                                be one of <option>leader</option>, or
                                <option>all</option> to select whether
                                to kill only the leader process of the
                                machine or all processes of the
                                machine. If omitted, defaults to
                                <option>all</option>.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><option>-s</option></term>
                                <term><option>--signal=</option></term>

                                <listitem><para>When used with
                                <command>kill-machine</command>, choose
                                which signal to send to selected
                                processes. Must be one of the
                                well-known signal specifiers, such as
                                <constant>SIGTERM</constant>,
                                <constant>SIGINT</constant> or
                                <constant>SIGSTOP</constant>. If
                                omitted, defaults to
                                <constant>SIGTERM</constant>.</para></listitem>
                        </varlistentry>

                </variablelist>

                <para>The following commands are understood:</para>

                <variablelist>
                        <varlistentry>
                                <term><command>list</command></term>

                                <listitem><para>List currently running
                                virtual machines and containers.
                                </para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>status</command> <replaceable>ID</replaceable>...</term>

                                <listitem><para>Show terse runtime
                                status information about one or more
                                virtual machines and containers. This
                                function is intended to generate
                                human-readable output. If you are
                                looking for computer-parsable output,
                                use <command>show</command> instead.
                                </para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>show</command> <replaceable>ID</replaceable>...</term>

                                <listitem><para>Show properties of one
                                or more registered virtual machines or
                                containers or the manager itself. If
                                no argument is specified, properties
                                of the manager will be shown. If an
                                ID is specified, properties of this
                                virtual machine or container are
                                shown. By default, empty properties
                                are suppressed. Use
                                <option>--all</option> to show those
                                too. To select specific properties to
                                show, use
                                <option>--property=</option>. This
                                command is intended to be used
                                whenever computer-parsable output is
                                required. Use
                                <command>status</command> if you are
                                looking for formatted human-readable
                                output.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>terminate</command> <replaceable>ID</replaceable>...</term>

                                <listitem><para>Terminates a virtual
                                machine or container. This kills all
                                processes of the virtual machine or
                                container and deallocates all
                                resources attached to that
                                instance.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>kill</command> <replaceable>ID</replaceable>...</term>

                                <listitem><para>Send a signal to one
                                or more processes of the virtual
                                machine or container. This means
                                processes as seen by the host, not the
                                processes inside the virtual machine
                                or container.
                                Use <option>--kill-who=</option> to
                                select which process to kill. Use
                                <option>--signal=</option> to select
                                the signal to send.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>reboot</command> <replaceable>ID</replaceable>...</term>

                                <listitem><para>Reboot one or more
                                containers. This will trigger a reboot
                                by sending SIGINT to the container's
                                init process, which is roughly
                                equivalent to pressing Ctrl+Alt+Del on
                                a non-containerized
                                system.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><command>login</command> <replaceable>ID</replaceable></term>

                                <listitem><para>Open a terminal login
                                session to a container. This will
                                create a TTY connection to a specific
                                container and asks for the execution of a
                                getty on it. Note that this is only
                                supported for containers running
                                <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                                as init system.</para></listitem>
                        </varlistentry>
                </variablelist>

        </refsect1>

        <refsect1>
                <title>Exit status</title>

                <para>On success, 0 is returned, a non-zero failure
                code otherwise.</para>
        </refsect1>

        <refsect1>
                <title>Environment</title>

                <variablelist class='environment-variables'>
                        <varlistentry>
                                <term><varname>$SYSTEMD_PAGER</varname></term>
                                <listitem><para>Pager to use when
                                <option>--no-pager</option> is not given;
                                overrides <varname>$PAGER</varname>.  Setting
                                this to an empty string or the value
                                <literal>cat</literal> is equivalent to passing
                                <option>--no-pager</option>.</para></listitem>
                        </varlistentry>
                </variablelist>
        </refsect1>

        <refsect1>
                <title>See Also</title>
                <para>
                        <citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>