Interested in monitoring the OpenNebula API and keeping an eye on the changes of state in your VMs and Hosts…? Have a look at how the OpenNebula Hook Manager works:
https://opennebula.org/monitoring-opennebula-events-with-graphite-grafana/
Thanks for the post, @cgonzalez! 
it looks like one of the images is in a protected google drive
https://docs.google.com/a/opennebula.systems/drawings/d/s3bZbTntH02-gRPZvyJ8SrQ/image?w=624&h=260&rev=261&ac=1&parent=1X6jpScdXU6WlpkzmBXQeJ8YcR6kp2BmgWVxODN-Myow
Best Regards,
Anton Todorov
Many thanks for the heads-up, @atodorov_storpool! All sorted now, you should be able to see that image 
