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SYSTEMD-SYSTEM.CONF(5)	      systemd-system.conf	SYSTEMD-SYSTEM.CONF(5)

NAME
       systemd-system.conf, systemd-user.conf - System and session service
       manager configuration file

SYNOPSIS
       /etc/systemd/system.conf

       /etc/systemd/user.conf

DESCRIPTION
       When run as system instance systemd reads the configuration file
       system.conf, otherwise user.conf. These configuration files contain a
       few settings controlling basic manager operations.

OPTIONS
       All options are configured in the "[Manager]" section:

       LogLevel=, LogTarget=, LogColor=, LogLocation=, DumpCore=yes,
       CrashShell=no, ShowStatus=yes, CrashChVT=1,
       DefaultStandardOutput=journal, DefaultStandardError=inherit
	   Configures various parameters of basic manager operation. These
	   options may be overridden by the respective command line arguments.
	   See systemd(1) for details about these command line arguments.

       DefaultTimeoutStartSec=, DefaultTimeoutStopSec=, DefaultRestartSec=
	   Configures the default time-outs for starting and stopping of
	   units, as well as the default time to sleep between automatic
	   restarts of a units, as configured per-unit in TimeoutStartSec=,
	   TimeoutStopSec= and RestartSec= (for service units see
	   systemd.service(5) for details on the per-unit settings). For
	   non-service units DefaultTimeoutStartSec= sets the default
	   TimeoutSec= value.

       DefaultStartLimitInterval=, DefaultStartLimitBurst=
	   Configure the default start rate limiting, as configured
	   per-service by StartLimitInterval= and StartLimitBurst=. See
	   systemd.service(5) for details on the per-service settings).

       CPUAffinity=
	   Configures the initial CPU affinity for the init process. Takes a
	   space-separated list of CPU indices.

       JoinControllers=cpu,cpuacct net_cls,netprio
	   Configures controllers that shall be mounted in a single hierarchy.
	   By default, systemd will mount all controllers which are enabled in
	   the kernel in individual hierarchies, with the exception of those
	   listed in this setting. Takes a space-separated list of
	   comma-separated controller names, in order to allow multiple joined
	   hierarchies. Defaults to 'cpu,cpuacct'. Pass an empty string to
	   ensure that systemd mounts all controllers in separate hierarchies.

	   Note that this option is only applied once, at very early boot. If
	   you use an initial RAM disk (initrd) that uses systemd, it might
	   hence be necessary to rebuild the initrd if this option is changed,
	   and make sure the new configuration file is included in it.
	   Otherwise, the initrd might mount the controller hierarchies in a
	   different configuration than intended, and the main system cannot
	   remount them anymore.

       RuntimeWatchdogSec=, ShutdownWatchdogSec=
	   Configure the hardware watchdog at runtime and at reboot. Takes a
	   timeout value in seconds (or in other time units if suffixed with
	   "ms", "min", "h", "d", "w"). If RuntimeWatchdogSec= is set to a
	   non-zero value, the watchdog hardware (/dev/watchdog) will be
	   programmed to automatically reboot the system if it is not
	   contacted within the specified timeout interval. The system manager
	   will ensure to contact it at least once in half the specified
	   timeout interval. This feature requires a hardware watchdog device
	   to be present, as it is commonly the case in embedded and server
	   systems. Not all hardware watchdogs allow configuration of the
	   reboot timeout, in which case the closest available timeout is
	   picked.  ShutdownWatchdogSec= may be used to configure the hardware
	   watchdog when the system is asked to reboot. It works as a safety
	   net to ensure that the reboot takes place even if a clean reboot
	   attempt times out. By default RuntimeWatchdogSec= defaults to 0
	   (off), and ShutdownWatchdogSec= to 10min. These settings have no
	   effect if a hardware watchdog is not available.

       CapabilityBoundingSet=
	   Controls which capabilities to include in the capability bounding
	   set for PID 1 and its children. See capabilities(7) for details.
	   Takes a whitespace-separated list of capability names as read by
	   cap_from_name(3). Capabilities listed will be included in the
	   bounding set, all others are removed. If the list of capabilities
	   is prefixed with ~, all but the listed capabilities will be
	   included, the effect of the assignment inverted. Note that this
	   option also affects the respective capabilities in the effective,
	   permitted and inheritable capability sets. The capability bounding
	   set may also be individually configured for units using the
	   CapabilityBoundingSet= directive for units, but note that
	   capabilities dropped for PID 1 cannot be regained in individual
	   units, they are lost for good.

       TimerSlackNSec=
	   Sets the timer slack in nanoseconds for PID 1 which is then
	   inherited to all executed processes, unless overridden
	   individually, for example with the TimerSlackNSec= setting in
	   service units (for details see systemd.exec(5)). The timer slack
	   controls the accuracy of wake-ups triggered by timers. See prctl(2)
	   for more information. Note that in contrast to most other time span
	   definitions this parameter takes an integer value in nano-seconds
	   if no unit is specified. The usual time units are understood too.

       DefaultEnvironment=
	   Sets manager environment variables passed to all executed
	   processes. Takes a space-separated list of variable assignments.
	   See environ(7) for details about environment variables.

	   Example:

	       DefaultEnvironment="VAR1=word1 word2" VAR2=word3 "VAR3=word 5 6"

	   Sets three variables "VAR1", "VAR2", "VAR3".

       DefaultLimitCPU=, DefaultLimitFSIZE=, DefaultLimitDATA=,
       DefaultLimitSTACK=, DefaultLimitCORE=, DefaultLimitRSS=,
       DefaultLimitNOFILE=, DefaultLimitAS=, DefaultLimitNPROC=,
       DefaultLimitMEMLOCK=, DefaultLimitLOCKS=, DefaultLimitSIGPENDING=,
       DefaultLimitMSGQUEUE=, DefaultLimitNICE=, DefaultLimitRTPRIO=,
       DefaultLimitRTTIME=
	   These settings control various default resource limits for units.
	   See setrlimit(2) for details. Use the string infinity to configure
	   no limit on a specific resource. These settings may be overridden
	   in individual units using the corresponding LimitXXX= directives.
	   Note that these resource limits are only defaults for units, they
	   are not applied to PID 1 itself.

SEE ALSO
       systemd(1), systemd.directives(7), environ(7)

systemd 208						SYSTEMD-SYSTEM.CONF(5)
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