Starting/Stopping Custom PHP Chat Server Linux Service (CentOS)
- by chad
I have been trying all night to get this service working properly. I created this script from a template and am very new to bash coding. I wrote a fully functioning chat server in php which runs endlessly, but now want to make it a dedicated service. I want to do this so that it starts on server boot and boots back up if possible when there are any down-times with the server. The issue is that I need this thing to run in a detached screen so that I can monitor packet data or send server commands via SSH when need-be.
The main problem that i'm having is that it needs to have its own PID when it starts so that I can stop/restart it when needed. I am the type who grinds on coding until I figure it out, but this is so new to me that it seems the learning curve here is very steep and frustrating. Below is my code if anybody can please help me with this one, i've gotten so tired I can't even concentrate any more :(
#!/bin/sh
#
# chatserver
#
# chkconfig: 345 20 90
# description: chatServer Linux Service Daemon \
# for general server handling
### BEGIN INIT INFO
# Provides: chatserver
# Required-Start: $local_fs $network $named $syslog
# Required-Stop: $local_fs $syslog
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: This service maintains the chatServer
# Description: chatServer Linux Service Daemon
# for general server handling
### END INIT INFO
# Source function library.
. /etc/rc.d/init.d/functions
exec="screen php -q /var/www/html/chatServer.php"
prog="chatserver"
config="/etc/sysconfig/$prog"
pidfile="/var/run/chatserver.pid"
[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
lockfile=/var/lock/subsys/$prog
start() {
#$exec || exit 5
echo -n $"Starting $prog: "
daemon $exec --name=$exec --pidfile=$pidfile
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc -p $pidfile
rm -f $pidfile
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
restart() {
stop
start
}
reload() {
restart
}
force_reload() {
restart
}
rh_status() {
# run checks to determine if the service is running or use generic status
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
restart
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
exit 2
esac
exit $?
