Hi Hieu Lam,
you can create odoo script start in ubuntu by:
create file bash:
#!/bin/bash
### BEGIN INIT INFO
# Provides:          odoo
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start odoo daemon at boot time# Description:       Enable service provided by daemon.
# X-Interactive:     true
### END INIT INFO
## more info: http://wiki.debian.org/LSBInitScripts
. /lib/lsb/init-functions
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
DAEMON=/usr/bin/odoo
NAME=odoo
DESC=odoo
CONFIG=/etc/odoo/odoo.conf
LOGFILE=/var/log/odoo/odoo-server.log
PIDFILE=/var/run/${NAME}.pid
USER=odoo
export LOGNAME=$USER
test -x $DAEMON || exit 0set -e
function _start() { 
       start-stop-daemon --start --quiet --pidfile $PIDFILE --chuid $USER:$USER --background --make-pidfile --exec $DAEMON -- --config $CONFIG --logfile $LOGFILE
}
function _stop() { 
       start-stop-daemon --stop --quiet --pidfile $PIDFILE --oknodo --retry 3 
       rm -f $PIDFILE}
function _status() { 
    start-stop-daemon --status --quiet --pidfile $PIDFILE 
    return $?
}
case "$1" in 
        start) 
                echo -n "Starting $DESC: " 
                _start echo "ok" 
                ;;
        stop) 
                echo -n "Stopping $DESC: " 
                _stop echo "ok" 
                ;;
        restart|force-reload) 
                echo -n "Restarting $DESC: " 
                _stop sleep 1 
                _start echo "ok" 
                ;;
        status) 
                echo -n "Status of $DESC: " 
                _status && echo "running" || echo "stopped" 
                ;;
        *)    
                N=/etc/init.d/$NAME echo "Usage: $N {start|stop|restart|force-reload|status}" >&2 
                exit 1 ;;
esac
exit 0
This file in source odoo: /odoo/debian/init
put file in /etc/init.d/<file name>
after run: /etc/init.d/<file name> start
hope to help you.