redis sentinel startup script

sentinel

#!/bin/bash
### BEGIN INIT INFO
# Provides:          redis sentinel
# Required-Start:    $all
# Required-Stop:    $all
# Default-Start:    2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Starts redis sentinel
# Description:      Starts redis sentinel using start-stop-daemon
### END INIT INFO

NAME=redis-sentinel
BIN=/usr/local/bin/redis-server
SENTINEL_PID=/tmp/redis-sentinel.pid
CMD=$1

start() {
        echo "Starting $NAME ..."
        exec 2>&1 $BIN /etc/redis/sentinel.conf --sentinel | logger -t sentinel &
        echo $! > "${SENTINEL_PID}";
}

stop() {
        PID=`cat $SENTINEL_PID`
        echo "Stopping $NAME ($PID) ..."
        kill $PID
}

restart() {
        echo "Restarting $NAME ..."
        stop
        start
}

case "$CMD" in
        start)
                start
                ;;
        stop)
                stop
                ;;
        restart)
                restart
                ;;
        *)
                echo "Usage $0 {start|stop|restart}"
esac

On my ubuntu box $! picks up the pid of logger as it spawned after redis-server
this seems to work: echo pgrep -n -x redis-server > "${SENTINEL_PID}";

Same issue as @ethergreg, I used this instead:

echo $(pidof redis-sentinel) > $SENTINEL_PID