springboot 启动脚本获取pid问题

#! /bin/bash

APP='eureka-1.0.0.jar'
active='slave'
pid=$(pgrep -f $APP)

export JAVA_OPTS="-server -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=128m -Xms1024m -Xmx1024m -Xmn256m -Xss256k -XX:SurvivorRatio=8 -XX:+UseConcMarkSweepGC"

start() {
if [ -n "$pid" ]; then
echo "[$APP] already start, pid:&pid"
kill -9 $pid
#return 0
fi

#nohup java -jar $APP --spring.profiles.active=$active | /usr/sbin/cronolog eureka-$active-%Y-%m-%d.out >> /dev/null 2>&1 &  ##日志切割
nohup java -jar $APP --spring.profiles.active=$active >> /dev/null & ##不保存启动日志

echo "[$APP] start, ok!"
}

stop() {
if [ -z "$pid" ]; then
echo "[$APP] not running!"
#return 0
fi

kill -9 $pid
echo "[$APP] stop, ok!"
}

status() {
if [ -z "$pid" ]; then
echo "[$APP] not running!"
else
echo "[$APP] is running!"
fi
}

case $1 in
start)
start
;;
stop)
stop
;;
status)
status
;;
*)
echo "Usage: {start|stop|status}"
;;
esac

exit 0