LOGIND.CONF(5) logind.conf LOGIND.CONF(5)
NAME
logind.conf, logind.conf.d - Login manager configuration files
SYNOPSIS
/etc/systemd/logind.conf
/etc/systemd/logind.conf.d/*.conf
/run/systemd/logind.conf.d/*.conf
/usr/lib/systemd/logind.conf.d/*.conf
DESCRIPTION
These files configure various parameters of the systemd login manager,
systemd-logind.service(8). See systemd.syntax(7) for a general
description of the syntax.
CONFIGURATION DIRECTORIES AND PRECEDENCE
The default configuration is set during compilation, so configuration
is only needed when it is necessary to deviate from those defaults.
Initially, the main configuration file in /etc/systemd/ contains
commented out entries showing the defaults as a guide to the
administrator. Local overrides can be created by editing this file or
by creating drop-ins, as described below. Using drop-ins for local
configuration is recommended over modifications to the main
configuration file.
In addition to the "main" configuration file, drop-in configuration
snippets are read from /usr/lib/systemd/*.conf.d/,
/usr/local/lib/systemd/*.conf.d/, and /etc/systemd/*.conf.d/. Those
drop-ins have higher precedence and override the main configuration
file. Files in the *.conf.d/ configuration subdirectories are sorted by
their filename in lexicographic order, regardless of in which of the
subdirectories they reside. When multiple files specify the same
option, for options which accept just a single value, the entry in the
file sorted last takes precedence, and for options which accept a list
of values, entries are collected as they occur in the sorted files.
When packages need to customize the configuration, they can install
drop-ins under /usr/. Files in /etc/ are reserved for the local
administrator, who may use this logic to override the configuration
files installed by vendor packages. Drop-ins have to be used to
override package drop-ins, since the main configuration file has lower
precedence. It is recommended to prefix all filenames in those
subdirectories with a two-digit number and a dash, to simplify the
ordering of the files.
To disable a configuration file supplied by the vendor, the recommended
way is to place a symlink to /dev/null in the configuration directory
in /etc/, with the same filename as the vendor configuration file.
OPTIONS
All options are configured in the [Login] section:
NAutoVTs=
Takes a positive integer. Configures how many virtual terminals
(VTs) to allocate by default that, when switched to and are
previously unused, "autovt" services are automatically spawned on.
These services are instantiated from the template unit
autovt@.service for the respective VT TTY name, for example,
autovt@tty4.service. By default, autovt@.service is linked to
getty@.service. In other words, login prompts are started
dynamically as the user switches to unused virtual terminals.
Hence, this parameter controls how many login "gettys" are
available on the VTs. If a VT is already used by some other
subsystem (for example, a graphical login), this kind of activation
will not be attempted. Note that the VT configured in ReserveVT= is
always subject to this kind of activation, even if it is not one of
the VTs configured with the NAutoVTs= directive. Defaults to 6.
When set to 0, automatic spawning of "autovt" services is disabled.
ReserveVT=
Takes a positive integer. Identifies one virtual terminal that
shall unconditionally be reserved for autovt@.service activation
(see above). The VT selected with this option will be marked busy
unconditionally, so that no other subsystem will allocate it. This
functionality is useful to ensure that, regardless of how many VTs
are allocated by other subsystems, one login "getty" is always
available. Defaults to 6 (in other words, there will always be a
"getty" available on Alt-F6.). When set to 0, VT reservation is
disabled.
KillUserProcesses=
Takes a boolean argument. Configures whether the processes of a
user should be killed when the user logs out. If true, the scope
unit corresponding to the session and all processes inside that
scope will be terminated. If false, the scope is "abandoned", see
systemd.scope(5), and processes are not killed. Defaults to "no",
but see the options KillOnlyUsers= and KillExcludeUsers= below.
In addition to session processes, user process may run under the
user manager unit user@.service. Depending on the linger settings,
this may allow users to run processes independent of their login
sessions. See the description of enable-linger in loginctl(1).
Note that setting KillUserProcesses=yes will break tools like
screen(1) and tmux(1), unless they are moved out of the session
scope. See example in systemd-run(1).
KillOnlyUsers=, KillExcludeUsers=
These settings take space-separated lists of usernames that
override the KillUserProcesses= setting. A user name may be added
to KillExcludeUsers= to exclude the processes in the session scopes
of that user from being killed even if KillUserProcesses=yes is
set. If KillExcludeUsers= is not set, the "root" user is excluded
by default. KillExcludeUsers= may be set to an empty value to
override this default. If a user is not excluded, KillOnlyUsers= is
checked next. If this setting is specified, only the processes in
the session scopes of those users will be killed. Otherwise, users
are subject to the KillUserProcesses=yes setting.
IdleAction=
Configures the action to take when the system is idle. Takes one of
"ignore", "poweroff", "reboot", "halt", "kexec", "suspend",
"hibernate", "hybrid-sleep", "suspend-then-hibernate", and "lock".
Defaults to "ignore".
Note that this requires that user sessions correctly report the
idle status to the system. The system will execute the action after
all sessions report that they are idle, no idle inhibitor lock is
active, and subsequently, the time configured with IdleActionSec=
(see below) has expired.
IdleActionSec=
Configures the delay after which the action configured in
IdleAction= (see above) is taken after the system is idle.
InhibitDelayMaxSec=
Specifies the maximum time a system shutdown or sleep request is
delayed due to an inhibitor lock of type "delay" being active
before the inhibitor is ignored and the operation executes anyway.
Defaults to 5.
UserStopDelaySec=
Specifies how long to keep the user record and per-user service
user@.service around for a user after they logged out fully. If set
to zero, the per-user service is terminated immediately when the
last session of the user has ended. If this option is configured to
non-zero rapid logout/login cycles are sped up, as the user's
service manager is not constantly restarted. If set to "infinity"
the per-user service for a user is never terminated again after
first login, and continues to run until system shutdown. Defaults
to 10s.
HandlePowerKey=, HandlePowerKeyLongPress=, HandleRebootKey=,
HandleRebootKeyLongPress=, HandleSuspendKey=,
HandleSuspendKeyLongPress=, HandleHibernateKey=,
HandleHibernateKeyLongPress=, HandleLidSwitch=,
HandleLidSwitchExternalPower=, HandleLidSwitchDocked=
Controls how logind shall handle the system power, reboot and sleep
keys and the lid switch to trigger actions such as system
power-off, reboot or suspend. Can be one of "ignore", "poweroff",
"reboot", "halt", "kexec", "suspend", "hibernate", "hybrid-sleep",
"suspend-then-hibernate", "lock", and "factory-reset". If "ignore",
systemd-logind will never handle these keys. If "lock", all running
sessions will be screen-locked; otherwise, the specified action
will be taken in the respective event. Only input devices with the
"power-switch" udev tag will be watched for key/lid switch events.
HandlePowerKey= defaults to "poweroff", HandleRebootKey= defaults
to "reboot", HandleSuspendKey= defaults to "suspend",
HandleHibernateKey= defaults to "hibernate",
HandlePowerKeyLongPress= defaults to "ignore",
HandleRebootKeyLongPress= defaults to "poweroff",
HandleSuspendKeyLongPress= defaults to "hibernate",
HandleHibernateKeyLongPress= defaults to "ignore".
HandleLidSwitch= defaults to "suspend".
HandleLidSwitchExternalPower= is completely ignored by default (for
backwards compatibility) — an explicit value must be set before it
will be used to determine behaviour. HandleLidSwitchDocked=
defaults to "ignore". If the system is inserted in a docking
station, or if more than one display is connected, the action
specified by HandleLidSwitchDocked= occurs; if the system is on
external power the action (if any) specified by
HandleLidSwitchExternalPower= occurs; otherwise the
HandleLidSwitch= action occurs.
A different application may disable logind's handling of system
power and sleep keys and the lid switch by taking a low-level
inhibitor lock ("handle-power-key", "handle-suspend-key",
"handle-hibernate-key", "handle-lid-switch", "handle-reboot-key").
This is most commonly used by graphical desktop environments to
take over suspend and hibernation handling, and to use their own
configuration mechanisms. If a low-level inhibitor lock is taken,
logind will not take any action when that key or switch is
triggered and the Handle*= settings are irrelevant.
PowerKeyIgnoreInhibited=, SuspendKeyIgnoreInhibited=,
HibernateKeyIgnoreInhibited=, LidSwitchIgnoreInhibited=,
RebootKeyIgnoreInhibited=
Controls whether actions that systemd-logind takes when the power,
reboot and sleep keys and the lid switch are triggered are subject
to high-level inhibitor locks ("shutdown", "reboot", "sleep",
"idle"). Low level inhibitor locks ("handle-power-key",
"handle-suspend-key", "handle-hibernate-key", "handle-lid-switch",
"handle-reboot-key"), are always honored, irrespective of this
setting.
These settings take boolean arguments. If "no", the inhibitor locks
taken by applications are respected. If "yes", "shutdown", "reboot"
"sleep", and "idle" inhibitor locks are ignored.
PowerKeyIgnoreInhibited=, SuspendKeyIgnoreInhibited=,
HibernateKeyIgnoreInhibited= and RebootKeyIgnoreInhibited= default
to "no". LidSwitchIgnoreInhibited= defaults to "yes". This means
that when systemd-logind is handling events by itself (no low level
inhibitor locks are taken by another application), the lid switch
does not respect suspend blockers by default, but the power and
sleep keys do.
HoldoffTimeoutSec=
Specifies a period of time after system startup or system resume in
which systemd will hold off on reacting to lid events. This is
required for the system to properly detect any hotplugged devices
so systemd can ignore lid events if external monitors, or docks,
are connected. If set to 0, systemd will always react immediately,
possibly before the kernel fully probed all hotplugged devices.
This is safe, as long as you do not care for systemd to account for
devices that have been plugged or unplugged while the system was
off. Defaults to 30s.
RuntimeDirectorySize=
Sets the size limit on the $XDG_RUNTIME_DIR runtime directory for
each user who logs in. Takes a size in bytes, optionally suffixed
with the usual K, G, M, and T suffixes, to the base 1024 (IEC).
Alternatively, a numerical percentage suffixed by "%" may be
specified, which sets the size limit relative to the amount of
physical RAM. Defaults to 10%. Note that this size is a safety
limit only. As each runtime directory is a tmpfs file system, it
will only consume as much memory as is needed.
RuntimeDirectoryInodesMax=
Sets the limit on number of inodes for the $XDG_RUNTIME_DIR runtime
directory for each user who logs in. Takes a number, optionally
suffixed with the usual K, G, M, and T suffixes, to the base 1024
(IEC). Defaults to RuntimeDirectorySize= divided by 4096. Note that
this size is a safety limit only. As each runtime directory is a
tmpfs file system, it will only consume as much memory as is
needed.
InhibitorsMax=
Controls the maximum number of concurrent inhibitors to permit.
Defaults to 8192 (8K).
SessionsMax=
Controls the maximum number of concurrent user sessions to manage.
Defaults to 8192 (8K). Depending on how the pam_systemd.so module
is included in the PAM stack configuration, further login sessions
will either be refused, or permitted but not tracked by
systemd-logind.
RemoveIPC=
Controls whether System V and POSIX IPC objects belonging to the
user shall be removed when the user fully logs out. Takes a boolean
argument. If enabled, the user may not consume IPC resources after
the last of the user's sessions terminated. This covers System V
semaphores, shared memory and message queues, as well as POSIX
shared memory and message queues. Note that IPC objects of the root
user and other system users are excluded from the effect of this
setting. Defaults to "yes".
StopIdleSessionSec=
Specifies a timeout in seconds, or a time span value after which
systemd-logind checks the idle state of all sessions. Every session
that is idle for longer then the timeout will be stopped. Defaults
to "infinity" (systemd-logind is not checking the idle state of
sessions). For details about the syntax of time spans, see
systemd.time(7).
SEE ALSO
systemd(1), systemd-logind.service(8), loginctl(1), systemd-
system.conf(5)
systemd 252 LOGIND.CONF(5)
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