We begin by listing all instances that Nova knows about in step 1, noting the name of the instance we would like to delete.
In step 2, we delete the instance by specifying its name. Note that we can also use its ID instead. In step 3, we confirm that the instance has been undefined by libvirt and is no longer available in OpenStack.
In step 4, we can see the API calls that were sent to the nova-api, neutron-server, and nova-compute services and the action that those services took.