Manage your service with upstart in Ubuntu

Just add one file to /etc/init with contents like this:

description  "Your Server"

start on (net-device-up and local-filesystems and runlevel [2345])
stop on runlevel [016]

respawn

exec your-server-path-name >> /var/log/your-server.log

Reference: http://upstart.ubuntu.com/wiki/