# Ubuntu upstart file at /etc/init/yourservice.conf

pre-start script
    mkdir -p /var/log/yourcompany/
end script

respawn
respawn limit 15 5

start on runlevel [2345]
stop on runlevel [06]

script
su - youruser -c "NODE_ENV=test exec /var/www/yourcompany/yourproject/yourservice.js 2>&1" >>  /var/log/yourcompany/yourservice.log
end script