How to automatically start RabbitMq software when centos starts

[root@localhost init.d]# vi rabbitmq

#!/bin/bash
#chkconfig:2345 61 61

export HOME=/opt/data/rabbitmq/
export PATH=$PATH:/usr/local/erlang/bin
export PATH=$PATH:/usr/local/src/rabbitmq_server-3.6.15/sbin
 
case "$1" in
    start)
    echo "Starting RabbitMQ ..."
    rabbitmq-server-detached
    ;;
stop)
    echo "Stopping RabbitMQ ..."
    rabbitmqctl stop
    ;;
status)
    echo "Status RabbitMQ ..."
    rabbitmqctl status
    ;;
restart)
    echo "Restarting RabbitMQ ..."
    rabbitmqctl stop
    rabbitmq-server restart
    ;;
 
*)
    echo "Usage: $prog {start|stop|status|restart}"
    ;;
esac
exit 0

[root@localhost init.d]# chmod 777 rabbitmq

[root@localhost init.d]# chkconfig --add rabbitmq

[root@localhost init.d]# chkconfig rabbitmq on

[root@localhost init.d]# chkconfig --list rabbitmq

[root@localhost init.d]# ./rabbitmq start

[root@localhost init.d]#reboot
[root@localhost ~]# ps -elf|grep rabbitmq