Sstrhsrtj

I am trying to run a php script from init.d in centos 6.9, when I exit the terminal from which I started the service the application stops, and always the status of the application shows as stopped, even though it is running.

    #!/bin/sh

    #

    # arrbot        This shell script takes care of starting and stopping

    #               the arbbot

    #

    # chkconfig: - 65 20

    # description:  arbbot trader.

    # processname: arbbot

    # Required-Start: $network $syslog $mysqld

    # Required-Stop:  $network $syslog $mysqld

    # Short-Description: start and stop arbbot server

    # Description: arbbot trader

    ### END INIT INFO



    # Source function library.

    . /etc/rc.d/init.d/functions



    NAME=arbbot

    DESC="arbbot trader"

    LOGFILE="/var/log/${NAME}.log"

    DAEMON="/usr/bin/php5"

    WORK_DIRECTORY="/var/www/arbbot/"

    DAEMON_OPTS="/var/www/arbbot/main.php"

    ARBDIR="/var/www/arbbot"

    ARBBOT="exec ${DAEMON} ${DAEMON_OPTS} > ${LOGFILE} 2>&1 > NULL"

    LOCK="/var/lock/subsys/arbbot"



    start() {

            echo -n "Starting ${DESC}: "

            cd "${WORK_DIRECTORY}"

            $ARBBOT

            RETVAL=$?

            [ $RETVAL -eq 0 ] && touch -- "$LOCK"

            return $RETVAL

    }



    stop() {

            echo -n "Shutting down arbbot: "

            killproc $ARBBOT

            rm -f $LOCK

            return

    }



    restart() {

            stop

            start

    }



    reload() {

            restart

    }



    case "$1" in

    start)

            start

            echo "$NAME."

            ;;

    stop)

            stop

            echo "$NAME."

            ;;

    status)

            status ARBBOT

            RETVAL=$?

            ;;

    restart)

            restart

            ;;

    reload)

            reload

            ;;

    *)

            echo "Usage:  {start|stop|status|reload|restart[|probe]"

            exit 1

            ;;

    esac



    exit $RETVAL

I suggest you to read Run php script as daemon process
.

Also, more detailed description about writing php daemon like original system daemons - How to write a PHP Daemon.

There are a lot of features of daemon which do not apply to other process. It needs to close its stdout and stdin, and it needs to dissociate from the controlling process, and its needs to have its cwd set to root (amongst other things). There are minimal daemons which can act as a controlling process for running normal processes as if they were daemons - e.g. daemonize

You also may need custom signal handling and (if you want any dianostic/audit capability) logging capability.

However with the POSIX extensions, all the required functions are exposed - so you can setsid() and fork() from within your own code - or even just download some pre-cooked php code to do all this for you.

BEWARE: there are a lot of people publishing code and advice on the internet which is wrong - but they found it worked for them - the code I've linked above is one of the better implementations.