Cloud Print on an old local printer

add printer in local cups. make sure it prints. some printers require loading a firmware stub. in my /etc/rc.d/rc.local I have the following line:
/usr/share/hplip/firmware.py -n -p HP_LaserJet_1020



open chrome as a normal user (in our case luser23)
go to chrome://devices/
click add printer. follow instructions.

create the following init script and make sure is executed at startup

cat /etc/init.d/cloudprint

#!/bin/sh
#
# Start / Stop cloudprint daemon
#
# description:  Start / Stop cloudprint daemon
# chkconfig: 345 99 9
#
### BEGIN INIT INFO
# Provides: cloudprint
# Default-Start: 3 4 5
# Short-Description:  Start / Stop cloudprint daemon
# Description:  Start / Stop cloudprint daemon
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# config file
CONF=/etc/cloudprint.conf

[ -r $CONF ] && . $CONF
[ -r $CONF ] || user=luser23
[ -r $CONF ] || options="/opt/google/chrome/chrome --type=service --enable-cloud-print-proxy --noservice-autorun --noerrdialogs --disk-cache-size=1 --media-cache-size=1 --disk-cache-dir=/tmp/chrome.$$ &"

# See how we were called.
case "$1" in
  start)
 gprintf "Starting cloudprint: "
 /usr/bin/su -l $user -c "$options" && success || failure
 echo
 ;;
  stop)
 gprintf "Shutting down cloudprint:"
 killproc chrome && success || failure
 echo
 ;;
  status)
 status chrome
 ;;
  restart)
 $0 stop
 $0 start
 ;;
  *)
 gprintf "Usage: %s\n" "$0 {start|stop|restart|status}"
 exit 1
esac
exit 0


cat /etc/cloudprint.conf

user=luser23
options="/opt/google/chrome/chrome --type=service --enable-cloud-print-proxy --no-service-autorun --noerrdialogs --disk-cache-size=1 --media-cache-size=1 --disk-cache-dir=/tmp/chrome.$$ &"

or just add in /etc/rc.d/rc.local the following line:
su -l luser23 -c '/opt/google/chrome/chrome --type=service --enable-cloud-print-proxy --no-service-autorun --noerrdialogs --disk-cache-size=1 --media-cache-size=1 --disk-cache-dir=/tmp/chrome.$$ '