website/content/en/docs/reference/glossary/horizontal-pod-autoscaler.md

title	id	date	full_link	short_description	aka	tags
Horizontal Pod Autoscaler	horizontal-pod-autoscaler	2018-04-12	/docs/tasks/run-application/horizontal-pod-autoscale/	An API resource that automatically scales the number of pod replicas based on targeted CPU utilization or custom metric targets.	HPA	operation

An API resource that automatically scales the number of {{< glossary_tooltip term_id="pod" >}} replicas based on targeted CPU utilization or custom metric targets.

HPA is typically used with {{< glossary_tooltip text="ReplicationControllers" term_id="replication-controller" >}}, {{< glossary_tooltip text="Deployments" term_id="deployment" >}}, or {{< glossary_tooltip text="ReplicaSets" term_id="replica-set" >}}. It cannot be applied to objects that cannot be scaled, for example {{< glossary_tooltip text="DaemonSets" term_id="daemonset" >}}.