debian/rrdcached.init.d

   1 #! /bin/bash
   2 #
   3 # rrdcached - start and stop the RRDtool data caching daemon
   4 # http://oss.oetiker.ch/rrdtool/
   5 #
   6 # Based on the collectd init script.
   7 #
   8 # Copyright (C) 2005-2006 Florian Forster <octo@verplant.org>
   9 # Copyright (C) 2006-2009 Sebastian Harl <tokkee@debian.org>
  10 #
  11
  12 ### BEGIN INIT INFO
  13 # Provides:          rrdcached
  14 # Required-Start:    $local_fs $remote_fs
  15 # Required-Stop:     $local_fs $remote_fs
  16 # Should-Start:      $network
  17 # Should-Stop:       $network
  18 # Default-Start:     2 3 4 5
  19 # Default-Stop:      0 1 6
  20 # Short-Description: start the RRDtool data caching daemon
  21 ### END INIT INFO
  22
  23 set -e
  24
  25 PATH=/sbin:/bin:/usr/sbin:/usr/bin
  26
  27 DISABLE=0
  28
  29 DESC="RRDtool data caching daemon"
  30 NAME=rrdcached
  31 DAEMON=/usr/bin/rrdcached
  32
  33 OPTS="-l unix:/var/run/rrdcached.sock"
  34 OPTS="$OPTS -j /var/lib/rrdcached/journal/ -F"
  35 OPTS="$OPTS -b /var/lib/rrdcached/db/ -B"
  36
  37 PIDFILE=/var/run/rrdcached.pid
  38
  39 MAXWAIT=30
  40
  41 # Gracefully exit if the package has been removed.
  42 test -x $DAEMON || exit 0
  43
  44 if [ -r /etc/default/$NAME ]; then
  45         . /etc/default/$NAME
  46 fi
  47
  48 if test "$DISABLE" != 0 -a "$1" == "start"; then
  49         echo "$NAME has been disabled - see /etc/default/$NAME."
  50         exit 0
  51 fi
  52
  53 if test "$ENABLE_COREFILES" == 1; then
  54         ulimit -c unlimited
  55 fi
  56
  57 d_start() {
  58         if test "$DISABLE" != 0; then
  59                 # we get here during restart
  60                 echo -n " - disabled by /etc/default/$NAME"
  61                 return 0
  62         fi
  63
  64         # make sure we have the needed directories
  65         mkdir -p /var/lib/rrdcached/journal/
  66         mkdir -p /var/lib/rrdcached/db/
  67
  68         start-stop-daemon --start --quiet --oknodo --pidfile "$PIDFILE" \
  69                 --exec $DAEMON -- $OPTS -p "$PIDFILE"
  70 }
  71
  72 still_running_warning="
  73 WARNING: $NAME might still be running.
  74 In large setups it might take some time to write all pending data to
  75 the disk. You can adjust the waiting time in /etc/default/$NAME."
  76
  77 d_stop() {
  78         PID=$( cat "$PIDFILE" 2> /dev/null ) || true
  79
  80         start-stop-daemon --stop --quiet --oknodo --pidfile "$PIDFILE"
  81
  82         sleep 1
  83         if test -n "$PID" && kill -0 $PID 2> /dev/null; then
  84                 i=0
  85                 while kill -0 $PID 2> /dev/null; do
  86                         i=$(( $i + 2 ))
  87                         echo -n " ."
  88
  89                         if test $i -gt $MAXWAIT; then
  90                                 echo "$still_running_warning" >&2
  91                                 return 1
  92                         fi
  93
  94                         sleep 2
  95                 done
  96                 return 0
  97         fi
  98 }
  99
 100 d_status() {
 101         PID=$( cat "$PIDFILE" 2> /dev/null ) || true
 102
 103         if test -n "$PID" && kill -0 $PID 2> /dev/null; then
 104                 echo "$NAME ($PID) is running."
 105                 exit 0
 106         else
 107                 PID=$( pidof $NAME ) || true
 108
 109                 if test -n "$PID"; then
 110                         echo "$NAME ($PID) is running."
 111                         exit 0
 112                 else
 113                         echo "$NAME is stopped."
 114                 fi
 115         fi
 116         exit 1
 117 }
 118
 119 case "$1" in
 120         start)
 121                 echo -n "Starting $DESC: $NAME"
 122                 d_start
 123                 echo "."
 124                 ;;
 125         stop)
 126                 echo -n "Stopping $DESC: $NAME"
 127                 d_stop
 128                 echo "."
 129                 ;;
 130         status)
 131                 d_status
 132                 ;;
 133         restart|force-reload)
 134                 echo -n "Restarting $DESC: $NAME"
 135                 d_stop
 136                 sleep 1
 137                 d_start
 138                 echo "."
 139                 ;;
 140         *)
 141                 echo "Usage: $0 {start|stop|restart|force-reload|status}" >&2
 142                 exit 1
 143                 ;;
 144 esac
 145
 146 exit 0
 147
 148 # vim: syntax=sh noexpandtab sw=4 ts=4 :
 149