precisely I do not think that all the work will be done by script
but I am in the research phase of how:
when the load is waiting (eg 80% use of RAM) on my first VM (vmware-private cloud) I switch traffic to another machine (in openstack - public cloud)
my first step is to create an alarm that triggers a traittemnt
the idea of not migrating all to opensatck - it's just doing some sort of load balancing or tilting between the two clouds
scal in scale out
I had no response from the community