diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
commit | fc22b3d6507c6745911b9dfcc68f1e665ae13dbc (patch) | |
tree | ce1e3bce06471410239a6f41282e328770aa404a /upstream/fedora-40/man5/systemd.target.5 | |
parent | Initial commit. (diff) | |
download | manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.tar.xz manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.zip |
Adding upstream version 4.22.0.upstream/4.22.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'upstream/fedora-40/man5/systemd.target.5')
-rw-r--r-- | upstream/fedora-40/man5/systemd.target.5 | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/upstream/fedora-40/man5/systemd.target.5 b/upstream/fedora-40/man5/systemd.target.5 new file mode 100644 index 00000000..ba0aa547 --- /dev/null +++ b/upstream/fedora-40/man5/systemd.target.5 @@ -0,0 +1,177 @@ +'\" t +.TH "SYSTEMD\&.TARGET" "5" "" "systemd 255" "systemd.target" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +systemd.target \- Target unit configuration +.SH "SYNOPSIS" +.PP +\fItarget\fR\&.target +.SH "DESCRIPTION" +.PP +A unit configuration file whose name ends in +"\&.target" +encodes information about a target unit of systemd\&. Target units are used to group units and to set synchronization points for ordering dependencies with other unit files\&. +.PP +This unit type has no specific options\&. See +\fBsystemd.unit\fR(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\&. +.PP +Target units do not offer any additional functionality on top of the generic functionality provided by units\&. They merely group units, allowing a single target name to be used in +\fIWants=\fR +and +\fIRequires=\fR +settings to establish a dependency on a set of units defined by the target, and in +\fIBefore=\fR +and +\fIAfter=\fR +settings to establish ordering\&. Targets establish standardized names for synchronization points during boot and shutdown\&. Importantly, see +\fBsystemd.special\fR(7) +for examples and descriptions of standard systemd targets\&. +.PP +Target units provide a more flexible replacement for SysV runlevels in the classic SysV init system\&. For compatibility reasons special target units such as +runlevel3\&.target +exist which are used by the SysV runlevel compatibility code in systemd, see +\fBsystemd.special\fR(7) +for details\&. +.PP +Note that a target unit file must not be empty, lest it be considered a masked unit\&. It is recommended to provide a [Unit] section which includes informative +\fIDescription=\fR +and +\fIDocumentation=\fR +options\&. +.SH "AUTOMATIC DEPENDENCIES" +.SS "Implicit Dependencies" +.PP +There are no implicit dependencies for target units\&. +.SS "Default Dependencies" +.PP +The following dependencies are added unless +\fIDefaultDependencies=no\fR +is set: +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +Target units will automatically complement all configured dependencies of type +\fIWants=\fR +or +\fIRequires=\fR +with dependencies of type +\fIAfter=\fR +unless +\fIDefaultDependencies=no\fR +is set in the specified units\&. +.sp +Note that the reverse is not true\&. For example, defining +\fBWants=that\&.target\fR +in +some\&.service +will not automatically add the +\fBAfter=that\&.target\fR +ordering dependency for +some\&.service\&. Instead, +some\&.service +should use the primary synchronization function of target type units, by setting a specific +\fBAfter=that\&.target\fR +or +\fBBefore=that\&.target\fR +ordering dependency in its \&.service unit file\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +Target units automatically gain +\fIConflicts=\fR +and +\fIBefore=\fR +dependencies against +shutdown\&.target\&. +.RE +.SH "OPTIONS" +.PP +Target unit files may include [Unit] and [Install] sections, which are described in +\fBsystemd.unit\fR(5)\&. No options specific to this file type are supported\&. +.SH "EXAMPLE" +.PP +\fBExample\ \&1.\ \&Simple standalone target\fR +.sp +.if n \{\ +.RS 4 +.\} +.nf +# emergency\-net\&.target + +[Unit] +Description=Emergency Mode with Networking +Requires=emergency\&.target systemd\-networkd\&.service +After=emergency\&.target systemd\-networkd\&.service +AllowIsolate=yes +.fi +.if n \{\ +.RE +.\} +.PP +When adding dependencies to other units, it\*(Aqs important to check if they set +\fIDefaultDependencies=\fR\&. Service units, unless they set +\fIDefaultDependencies=no\fR, automatically get a dependency on +sysinit\&.target\&. In this case, both +emergency\&.target +and +systemd\-networkd\&.service +have +\fIDefaultDependencies=no\fR, so they are suitable for use in this target, and do not pull in +sysinit\&.target\&. +.PP +You can now switch into this emergency mode by running +\fIsystemctl isolate emergency\-net\&.target\fR +or by passing the option +\fIsystemd\&.unit=emergency\-net\&.target\fR +on the kernel command line\&. +.PP +Other units can have +\fIWantedBy=emergency\-net\&.target\fR +in the +\fI[Install]\fR +section\&. After they are enabled using +\fBsystemctl enable\fR, they will be started before +\fIemergency\-net\&.target\fR +is started\&. It is also possible to add arbitrary units as dependencies of +emergency\&.target +without modifying them by using +\fBsystemctl add\-wants\fR\&. +.SH "SEE ALSO" +.PP +\fBsystemd\fR(1), +\fBsystemctl\fR(1), +\fBsystemd.unit\fR(5), +\fBsystemd.special\fR(7), +\fBsystemd.directives\fR(7) |