man/systemd.kill.5

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   2 .TH "SYSTEMD\&.KILL" "5" "" "systemd 218" "systemd.kill"
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  22 .SH "NAME"
  23 systemd.kill \- Process killing procedure configuration
  24 .SH "SYNOPSIS"
  25 .PP
  26 \fIservice\fR\&.service,
  27 \fIsocket\fR\&.socket,
  28 \fImount\fR\&.mount,
  29 \fIswap\fR\&.swap,
  30 \fIscope\fR\&.scope
  31 .SH "DESCRIPTION"
  32 .PP
  33 Unit configuration files for services, sockets, mount points, swap devices and scopes share a subset of configuration options which define the killing procedure of processes belonging to the unit\&.
  34 .PP
  35 This man page lists the configuration options shared by these five unit types\&. See
  36 \fBsystemd.unit\fR(5)
  37 for the common options shared by all unit configuration files, and
  38 \fBsystemd.service\fR(5),
  39 \fBsystemd.socket\fR(5),
  40 \fBsystemd.swap\fR(5),
  41 \fBsystemd.mount\fR(5)
  42 and
  43 \fBsystemd.scope\fR(5)
  44 for more information on the configuration file options specific to each unit type\&.
  45 .PP
  46 The kill procedure configuration options are configured in the [Service], [Socket], [Mount] or [Swap] section, depending on the unit type\&.
  47 .SH "OPTIONS"
  48 .PP
  49 \fIKillMode=\fR
  50 .RS 4
  51 Specifies how processes of this unit shall be killed\&. One of
  52 \fBcontrol\-group\fR,
  53 \fBprocess\fR,
  54 \fBmixed\fR,
  55 \fBnone\fR\&.
  56 .sp
  57 If set to
  58 \fBcontrol\-group\fR, all remaining processes in the control group of this unit will be killed on unit stop (for services: after the stop command is executed, as configured with
  59 \fIExecStop=\fR)\&. If set to
  60 \fBprocess\fR, only the main process itself is killed\&. If set to
  61 \fBmixed\fR, the
  62 \fBSIGTERM\fR
  63 signal (see below) is sent to the main process while the subsequent
  64 \fBSIGKILL\fR
  65 signal (see below) is sent to all remaining processes of the unit\*(Aqs control group\&. If set to
  66 \fBnone\fR, no process is killed\&. In this case, only the stop command will be executed on unit stop, but no process be killed otherwise\&. Processes remaining alive after stop are left in their control group and the control group continues to exist after stop unless it is empty\&.
  67 .sp
  68 Processes will first be terminated via
  69 \fBSIGTERM\fR
  70 (unless the signal to send is changed via
  71 \fIKillSignal=\fR)\&. Optionally, this is immediately followed by a
  72 \fBSIGHUP\fR
  73 (if enabled with
  74 \fISendSIGHUP=\fR)\&. If then, after a delay (configured via the
  75 \fITimeoutStopSec=\fR
  76 option), processes still remain, the termination request is repeated with the
  77 \fBSIGKILL\fR
  78 signal (unless this is disabled via the
  79 \fISendSIGKILL=\fR
  80 option)\&. See
  81 \fBkill\fR(2)
  82 for more information\&.
  83 .sp
  84 Defaults to
  85 \fBcontrol\-group\fR\&.
  86 .RE
  87 .PP
  88 \fIKillSignal=\fR
  89 .RS 4
  90 Specifies which signal to use when killing a service\&. This controls the signal that is sent as first step of shutting down a unit (see above), and is usually followed by
  91 \fBSIGKILL\fR
  92 (see above and below)\&. For a list of valid signals, see
  93 \fBsignal\fR(7)\&. Defaults to
  94 \fBSIGTERM\fR\&.
  95 .RE
  96 .PP
  97 \fISendSIGHUP=\fR
  98 .RS 4
  99 Specifies whether to send
 100 \fBSIGHUP\fR
 101 to remaining processes immediately after sending the signal configured with
 102 \fIKillSignal=\fR\&. This is useful to indicate to shells and shell\-like programs that their connection has been severed\&. Takes a boolean value\&. Defaults to "no"\&.
 103 .RE
 104 .PP
 105 \fISendSIGKILL=\fR
 106 .RS 4
 107 Specifies whether to send
 108 \fBSIGKILL\fR
 109 to remaining processes after a timeout, if the normal shutdown procedure left processes of the service around\&. Takes a boolean value\&. Defaults to "yes"\&.
 110 .RE
 111 .SH "SEE ALSO"
 112 .PP
 113 \fBsystemd\fR(1),
 114 \fBsystemctl\fR(1),
 115 \fBjournalctl\fR(8),
 116 \fBsystemd.unit\fR(5),
 117 \fBsystemd.service\fR(5),
 118 \fBsystemd.socket\fR(5),
 119 \fBsystemd.swap\fR(5),
 120 \fBsystemd.mount\fR(5),
 121 \fBsystemd.exec\fR(5),
 122 \fBsystemd.directives\fR(7),
 123 \fBkill\fR(2),
 124 \fBsignal\fR(7)