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.\" ========================================================================
.\"
.IX Title "DH_SYSTEMD_START 1"
.TH DH_SYSTEMD_START 1 "2021-03-06" "13.3.3~bpo10+1" "Debhelper"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
dh_systemd_start \- start/stop/restart systemd unit files
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBdh_systemd_start\fR [\fIdebhelper options\fR] [\fB\-\-restart\-after\-upgrade\fR] [\fB\-\-no\-stop\-on\-upgrade\fR] [\fIunit file\fR ...]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBdh_systemd_start\fR is a debhelper program that is responsible for
starting/stopping or restarting systemd unit files in case no corresponding
sysv init script is available.
.PP
As with \fBdh_installinit\fR, the unit file is stopped before
upgrades and started afterwards (unless \fB\-\-restart\-after\-upgrade\fR is
specified, in which case it will only be restarted after the upgrade).
This logic is not used when there is a corresponding SysV init script
because invoke\-rc.d performs the stop/start/restart in that case.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-\-restart\-after\-upgrade\fR" 4
.IX Item "--restart-after-upgrade"
Do not stop the unit file until after the package upgrade has been completed.
This is the default behaviour in compat 10.
.Sp
In earlier compat levels the default was to stop the unit file in the
\&\fIprerm\fR, and start it again in the \fIpostinst\fR.
.Sp
This can be useful for daemons that should not have a possibly long
downtime during upgrade. But you should make sure that the daemon will not
get confused by the package being upgraded while it's running before using
this option.
.IP "\fB\-\-no\-restart\-after\-upgrade\fR" 4
.IX Item "--no-restart-after-upgrade"
Undo a previous \fB\-\-restart\-after\-upgrade\fR (or the default of compat
10).  If no other options are given, this will cause the service to be
stopped in the \fIprerm\fR script and started again in the \fIpostinst\fR
script.
.IP "\fB\-r\fR, \fB\-\-no\-stop\-on\-upgrade\fR, \fB\-\-no\-restart\-on\-upgrade\fR" 4
.IX Item "-r, --no-stop-on-upgrade, --no-restart-on-upgrade"
Do not stop service on upgrade.
.IP "\fB\-\-no\-start\fR" 4
.IX Item "--no-start"
Do not start the unit file after upgrades and after initial installation (the
latter is only relevant for services without a corresponding init script).
.SH "NOTES"
.IX Header "NOTES"
Note that this command is not idempotent. \fBdh_prep\fR\|(1) should be called
between invocations of this command (with the same arguments). Otherwise, it
may cause multiple instances of the same text to be added to maintainer
scripts.
.PP
Note that \fBdh_systemd_start\fR should be run after \fBdh_installinit\fR so that it
can detect corresponding SysV init scripts. The default sequence in \fBdh\fR does
the right thing, this note is only relevant when you are calling
\&\fBdh_systemd_start\fR manually.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBdebhelper\fR\|(7)
.SH "AUTHORS"
.IX Header "AUTHORS"
pkg\-systemd\-maintainers@lists.alioth.debian.org