NAME
systemd.target - Target unit configurationSYNOPSIS
target.targetDESCRIPTION
A unit configuration file whose name ends in ".target" encodes information about a target unit of systemd, which is used for grouping units and as well-known synchronization points during start-up. This unit type has no specific options. See systemd.unit(5) for the common options of all unit configuration files. The common configuration items are configured in the generic [Unit] and [Install] sections. A separate [Target] section does not exist, since no target-specific options may be configured. Target units do not offer any additional functionality on top of the generic functionality provided by units. They exist merely to group units via dependencies (useful as boot targets), and to establish standardized names for synchronization points used in dependencies between units. Among other things, target units are a more flexible replacement for SysV runlevels in the classic SysV init system. (And for compatibility reasons special target units such as runlevel3.target exist which are used by the SysV runlevel compatibility code in systemd. See systemd.special(7) for details).AUTOMATIC DEPENDENCIES
Implicit Dependencies
There are no implicit dependencies for target units.Default Dependencies
The following dependencies are added unless DefaultDependencies=no is set:•Target units will automatically
complement all configured dependencies of type Wants= or
Requires= with dependencies of type After= unless
DefaultDependencies=no is set in the specified units. Note that
Wants= or Requires= must be defined in the target unit itself
— if you for example define Wants=some.target in some.service,
the automatic ordering will not be added.
•Target units automatically gain
Conflicts= and Before= dependencies against
shutdown.target.
OPTIONS
Target unit files may include [Unit] and [Install] sections, which are described in systemd.unit(5). No options specific to this file type are supported.EXAMPLE
Example 1. Simple standalone target# emergency-net.target [Unit] Description=Emergency Mode with Networking Requires=emergency.target systemd-networkd.service After=emergency.target systemd-networkd.service AllowIsolate=yes
SEE ALSO
systemd(1), systemctl(1), systemd.unit(5), systemd.special(7), systemd.directives(7)systemd 252 |