After a horizontal pod autoscaler is created, it begins attempting to query
Heapster for metrics on the pods. It may take one to two minutes before Heapster
obtains the initial metrics.
After metrics are available in Heapster, the horizontal pod autoscaler computes
the ratio of the current metric utilization with the desired metric utilization,
and scales up or down accordingly. The scaling will occur at a regular interval,
but it may take one to two minutes before metrics make their way into Heapster.
For replication controllers, this scaling corresponds directly to the replicas
of the replication controller. For deployment configurations, scaling corresponds
directly to the replica count of the deployment configuration. Note that autoscaling
applies only to the latest deployment in the