Demo to show how heat can provide scaling URLs to allow for external app to control up/down scaling.
Edit the environment file:
vi heat-scale-demo/hpc.env - ensure the values here will work in your environment
Build the cluster:
heat stack-create hpc-demo -e heat-scale-demo/hpc.env -f heat-scale-demo/build-cluster.yaml
Get the scaling handles:
heat output-show br1 scale_down_url
heat output-show br1 scale_up_url
Then use curl to scale up: ( use the output on your own stack - don't copy this )