man/logind.conf.xml

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   7   This file is part of systemd.
   8
   9   Copyright 2010 Lennart Poettering
  10
  11   systemd is free software; you can redistribute it and/or modify it
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  24
  25 <refentry id="logind.conf" conditional='ENABLE_LOGIND'>
  26         <refentryinfo>
  27                 <title>logind.conf</title>
  28                 <productname>systemd</productname>
  29
  30                 <authorgroup>
  31                         <author>
  32                                 <contrib>Developer</contrib>
  33                                 <firstname>Lennart</firstname>
  34                                 <surname>Poettering</surname>
  35                                 <email>lennart@poettering.net</email>
  36                         </author>
  37                 </authorgroup>
  38         </refentryinfo>
  39
  40         <refmeta>
  41                 <refentrytitle>logind.conf</refentrytitle>
  42                 <manvolnum>5</manvolnum>
  43         </refmeta>
  44
  45         <refnamediv>
  46                 <refname>logind.conf</refname>
  47                 <refpurpose>Login manager configuration file</refpurpose>
  48         </refnamediv>
  49
  50         <refsynopsisdiv>
  51                 <para><filename>/etc/systemd/logind.conf</filename></para>
  52         </refsynopsisdiv>
  53
  54         <refsect1>
  55                 <title>Description</title>
  56
  57                 <para>This file configures various parameters of the systemd login manager, <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  58
  59         </refsect1>
  60
  61         <refsect1>
  62                 <title>Options</title>
  63
  64                 <para>All options are configured in the
  65                 <literal>[Login]</literal> section:</para>
  66
  67                 <variablelist>
  68
  69                         <varlistentry>
  70                                 <term><varname>NAutoVTs=</varname></term>
  71
  72                                 <listitem><para>Takes a positive
  73                                 integer. Configures how many virtual
  74                                 terminals (VTs) to allocate by default
  75                                 that, when switched to and are
  76                                 previously unused,
  77                                 <literal>autovt</literal> services are
  78                                 automatically spawned on. These
  79                                 services are instantiated from the
  80                                 template unit
  81                                 <filename>autovt@.service</filename>
  82                                 for the respective VT TTY name,
  83                                 e.g. <filename>autovt@tty4.service</filename>. By
  84                                 default,
  85                                 <filename>autovt@.service</filename>
  86                                 is linked to
  87                                 <filename>getty@.service</filename>,
  88                                 i.e. login prompts are started
  89                                 dynamically as the user switches to
  90                                 unused virtual terminals. Hence, this
  91                                 parameter controls how many login
  92                                 <literal>gettys</literal> are
  93                                 available on the VTs. If a VT is
  94                                 already used by some other subsystem
  95                                 (for example a graphical login), this
  96                                 kind of activation will not be
  97                                 attempted. Note that the VT configured
  98                                 in <varname>ReserveVT=</varname> is
  99                                 always subject to this kind of
 100                                 activation, even if it is not one of
 101                                 VTs configured with the
 102                                 <varname>NAutoVTs=</varname>
 103                                 directive. Defaults to 6. When set to
 104                                 0, automatic spawning of
 105                                 <literal>autovt</literal> services is
 106                                 disabled.</para></listitem>
 107                         </varlistentry>
 108
 109                         <varlistentry>
 110                                 <term><varname>ReserveVT=</varname></term>
 111
 112                                 <listitem><para>Takes a positive
 113                                 integer. Configures the number of one
 114                                 virtual terminal that shall
 115                                 unconditionally be reserved for
 116                                 <filename>autovt@.service</filename>
 117                                 activation (see above). The VT
 118                                 selected with this option will be
 119                                 marked busy unconditionally, so that no
 120                                 other subsystem will allocate it. This
 121                                 functionality is useful to ensure that
 122                                 regardless of how many VTs are allocated
 123                                 by other subsystems, one login
 124                                 <literal>getty</literal> is always
 125                                 available. Defaults to 6 (in other
 126                                 words, there will always be a
 127                                 <literal>getty</literal> available on
 128                                 Alt-F6.). When set to 0, VT
 129                                 reservation is
 130                                 disabled.</para></listitem>
 131                         </varlistentry>
 132
 133                         <varlistentry>
 134                                 <term><varname>KillUserProcesses=</varname></term>
 135
 136                                 <listitem><para>Takes a boolean
 137                                 argument. Configures whether the
 138                                 processes of a user should be killed
 139                                 when she or he completely logs out (i.e. after
 140                                 her/his last session ended). Defaults to
 141                                 <literal>no</literal>.</para></listitem>
 142                         </varlistentry>
 143
 144                         <varlistentry>
 145                                 <term><varname>IdleAction=</varname></term>
 146
 147                                 <listitem><para>Configures the action
 148                                 to take when the system is idle. Takes
 149                                 one of <literal>ignore</literal>,
 150                                 <literal>poweroff</literal>,
 151                                 <literal>reboot</literal>,
 152                                 <literal>halt</literal>,
 153                                 <literal>kexec</literal>,
 154                                 <literal>suspend</literal>,
 155                                 <literal>hibernate</literal>,
 156                                 <literal>hybrid-sleep</literal>,
 157                                 <literal>lock</literal>. Defaults to
 158                                 <literal>ignore</literal>.</para>
 159
 160                                 <para>Note that this requires that
 161                                 user sessions correctly report the
 162                                 idle status to the system. The system
 163                                 will execute the action after all
 164                                 sessions report that they are idle,
 165                                 no idle inhibitor lock is active,
 166                                 and subsequently, the time configured
 167                                 with <varname>IdleActionSec=</varname>
 168                                 (see below) has expired.</para>
 169                                 </listitem>
 170                         </varlistentry>
 171
 172                         <varlistentry>
 173                                 <term><varname>IdleActionSec=</varname></term>
 174
 175                                 <listitem><para>Configures the delay
 176                                 after which the action configured in
 177                                 <varname>IdleAction=</varname> (see
 178                                 above) is taken after the system is
 179                                 idle.</para></listitem>
 180                         </varlistentry>
 181
 182                         <varlistentry>
 183                                 <term><varname>KillOnlyUsers=</varname></term>
 184                                 <term><varname>KillExcludeUsers=</varname></term>
 185
 186                                 <listitem><para>These settings take
 187                                 space-separated lists of usernames
 188                                 that influence the effect of
 189                                 <varname>KillUserProcesses=</varname>. If
 190                                 not empty, only processes of users
 191                                 listed in
 192                                 <varname>KillOnlyUsers</varname> will
 193                                 be killed when they log out
 194                                 entirely. Processes of users listed in
 195                                 <varname>KillExcludeUsers=</varname>
 196                                 are excluded from being
 197                                 killed. <varname>KillExcludeUsers=</varname>
 198                                 defaults to <literal>root</literal>
 199                                 and takes precedence over
 200                                 <varname>KillOnlyUsers=</varname>,
 201                                 which defaults to the empty list.</para></listitem>
 202                         </varlistentry>
 203
 204                         <varlistentry>
 205                                 <term><varname>Controllers=</varname></term>
 206                                 <term><varname>ResetControllers=</varname></term>
 207
 208                                 <listitem><para>These settings control
 209                                 the default control group hierarchies
 210                                 users logging in are added to, in
 211                                 addition to the
 212                                 <literal>name=systemd</literal> named
 213                                 hierarchy. These settings take
 214                                 space-separated lists of controller
 215                                 names. Pass the empty string to ensure
 216                                 that logind does not touch any
 217                                 hierarchies but systemd's own. When
 218                                 logging in, user sessions will get
 219                                 private control groups in all
 220                                 hierarchies listed in
 221                                 <varname>Controllers=</varname> and be
 222                                 reset to the root control group in all
 223                                 hierarchies listed in
 224                                 <varname>ResetControllers=</varname>.
 225                                 <varname>Controllers=</varname>
 226                                 defaults to the empty list.
 227                                 <varname>ResetControllers=</varname>
 228                                 defaults to
 229                                 <literal>cpu</literal>. Note that for
 230                                 all controllers that are not listed in
 231                                 either <varname>Controllers=</varname>
 232                                 or
 233                                 <varname>ResetControllers=</varname>,
 234                                 newly created sessions will be part of
 235                                 the control groups of the system
 236                                 service that created the
 237                                 session.</para></listitem>
 238                         </varlistentry>
 239
 240                         <varlistentry>
 241                                 <term><varname>InhibitDelayMaxSec=</varname></term>
 242
 243                                 <listitem><para>Specifies the maximum
 244                                 time a system shutdown or sleep
 245                                 request is delayed due to an inhibitor
 246                                 lock of type <literal>delay</literal>
 247                                 being active before the inhibitor is
 248                                 ignored and the operation executes
 249                                 anyway. Defaults to
 250                                 5s.</para></listitem>
 251                         </varlistentry>
 252
 253                         <varlistentry>
 254                                 <term><varname>HandlePowerKey=</varname></term>
 255                                 <term><varname>HandleSuspendKey=</varname></term>
 256                                 <term><varname>HandleHibernateKey=</varname></term>
 257                                 <term><varname>HandleLidSwitch=</varname></term>
 258
 259                                 <listitem><para>Controls whether
 260                                 logind shall handle the system power
 261                                 and sleep keys and the lid switch to
 262                                 trigger actions such as system
 263                                 power-off or suspend. Can be one of
 264                                 <literal>ignore</literal>,
 265                                 <literal>poweroff</literal>,
 266                                 <literal>reboot</literal>,
 267                                 <literal>halt</literal>,
 268                                 <literal>kexec</literal>,
 269                                 <literal>suspend</literal>,
 270                                 <literal>hibernate</literal>,
 271                                 <literal>hybrid-sleep</literal> and
 272                                 <literal>lock</literal>. If
 273                                 <literal>ignore</literal>, logind will
 274                                 never handle these keys. If
 275                                 <literal>lock</literal>, all running
 276                                 sessions will be screen-locked; otherwise,
 277                                 the specified action
 278                                 will be taken in the respective
 279                                 event. Only input devices with the
 280                                 <literal>power-switch</literal> udev
 281                                 tag will be watched for key/lid switch
 282                                 events. <varname>HandlePowerKey=</varname>
 283                                 defaults to
 284                                 <literal>poweroff</literal>.
 285                                 <varname>HandleSuspendKey=</varname>
 286                                 and
 287                                 <varname>HandleLidSwitch=</varname>
 288                                 default to <literal>suspend</literal>.
 289                                 <varname>HandleHibernateKey=</varname>
 290                                 defaults to
 291                                 <literal>hibernate</literal>.</para></listitem>
 292                         </varlistentry>
 293
 294                         <varlistentry>
 295                                 <term><varname>PowerKeyIgnoreInhibited=</varname></term>
 296                                 <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
 297                                 <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
 298                                 <term><varname>LidSwitchIgnoreInhibited=</varname></term>
 299
 300                                 <listitem><para>Controls whether
 301                                 actions triggered by the power and
 302                                 sleep keys and the lid switch are
 303                                 subject to inhibitor locks. These
 304                                 settings take boolean arguments. If
 305                                 <literal>off</literal>, the inhibitor
 306                                 locks taken by applications in order
 307                                 to block the requested operation are
 308                                 respected. If <literal>on</literal>,
 309                                 the requested operation is executed in
 310                                 any
 311                                 case. <varname>PowerKeyIgnoreInhibited=</varname>,
 312                                 <varname>SuspendKeyIgnoreInhibited=</varname>
 313                                 and
 314                                 <varname>HibernateKeyIgnoreInhibited=</varname>
 315                                 default to <literal>off</literal>.
 316                                 <varname>LidSwitchIgnoreInhibited=</varname>
 317                                 defaults to
 318                                 <literal>yes</literal>. This means
 319                                 that the lid switch does not respect
 320                                 suspend blockers by default, but the
 321                                 power and sleep keys do.
 322                                 </para></listitem>
 323                         </varlistentry>
 324
 325                 </variablelist>
 326
 327                 <para>Note that setting
 328                 <varname>KillUserProcesses=1</varname> will break tools
 329                 like
 330                 <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
 331
 332                 <para>Note that <varname>KillUserProcesses=1</varname>
 333                 is a weaker version of
 334                 <varname>kill-session-processes=1</varname>, which may
 335                 be configured per-service for
 336                 <citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. The
 337                 latter kills processes of a session as soon as it
 338                 ends, the former kills processes as soon as the last
 339                 session of the user ends.</para>
 340         </refsect1>
 341
 342         <refsect1>
 343                   <title>See Also</title>
 344                   <para>
 345                           <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 346                           <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 347                           <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 348                           <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 349                   </para>
 350         </refsect1>
 351
 352 </refentry>