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#!/bin/sh
### BEGIN INIT INFO
# Provides:          netdata
# Required-Start:    $local_fs $remote_fs $network
# Required-Stop:     $local_fs $remote_fs $network
# Should-Start:      $syslog
# Should-Stop:       $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Real-time charts for system monitoring
# Description:       Start netdata, a real-time monitoring tool
### END INIT INFO

# Documentation
#  man netdata
#  file:///usr/share/doc/netdata/html/index.html
#  https://github.com/netdata/netdata

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
. /lib/lsb/init-functions

NAME=netdata
PIDFILE=/run/netdata.pid
DAEMON=/usr/sbin/$NAME
DAEMON_USER=$NAME
DAEMON_ARGS="-P $PIDFILE"

# Exit if executable is not installed
[ -x "$DAEMON" ] || exit 0

PATH=/sbin:/bin:/usr/sbin:/usr/bin
DESC="the netdata daemon"
CONF_FNAME=/etc/netdata/netdata.conf

STOP_SCHEDULE="${STOP_SCHEDULE:-QUIT/5/TERM/5/KILL/5}"

case "$1" in
  start)
	if [ ! -f "$CONF_FNAME" ]; then
		log_action_msg "Not starting $DESC: $CONF_FNAME is missing."
		exit 0
	fi

	log_action_begin_msg "Starting $DESC"

	if start-stop-daemon --start --quiet --pidfile $PIDFILE --name $NAME --startas $DAEMON --test; then
		if start-stop-daemon --start --quiet --pidfile $PIDFILE --name $NAME --startas $DAEMON -- $DAEMON_ARGS; then
			log_action_end_msg 0
		else
			log_action_end_msg 1
			exit 1
		fi
	else
		log_action_end_msg 0 "already running"
	fi
	;;
  stop)
	log_action_begin_msg "Stopping $DESC"
	pid=`cat $PIDFILE 2>/dev/null` || true
	if test ! -f $PIDFILE -o -z "$pid"; then
		log_action_end_msg 0 "not running - there is no $PIDFILE"
		exit 0
	fi

	if start-stop-daemon --stop --quiet --pidfile $PIDFILE --name $NAME --retry=$STOP_SCHEDULE; then
		log_action_end_msg 0
	else
		log_action_end_msg 1 "$DAEMON died: process $pid not running; or permission denied"
		exit 1
	fi
	;;
  restart|force-reload)
	$0 stop
	$0 start
	;;
  status)
	if test ! -r $(dirname $PIDFILE); then
		log_failure_msg "cannot read PID file $PIDFILE"
		exit 4
	fi
	pid=`cat $PIDFILE 2>/dev/null` || true
	if test ! -f $PIDFILE -o -z "$pid"; then
		log_failure_msg "$NAME is not running"
		exit 3
	fi
	if ps "$pid" >/dev/null 2>&1; then
		log_success_msg "$NAME is running"
		exit 0
	else
		log_failure_msg "$NAME is not running"
		exit 1
	fi
	;;
  *)
	log_action_msg "Usage: $0 {start|stop|restart|force-reload|status}" >&2
	exit 1
	;;
esac

exit 0