pod-autoscaler

command
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Published: Mar 31, 2023 License: Apache-2.0 Imports: 17 Imported by: 0

README

Pod Autoscaler

The pod autoscaler is the component that manages the scaling of pods within a node.

Recommender

The Recommender is the controller that periodically suggests the amount of resources to assign to each pod in order to meet the service level agreement assigned to the service.

It takes as input three types of resources, which are:

  • Pod Scale to retrieve the actual amount of resources (CPU and memory) assigned to a pod.
  • Custom Metric to retrieve the actual performance of the pod.
  • Service Level Agreement to retrieve the desired performance of the pod.

and it outputs:

  • Pod Scale to set the desired amount of resources (CPU and memory) assigned to a pod.

The recommender supports multiple logics:

  • Control Theory Logic: it adopts a PI controller per pod. Resources recommendation are very fast.

The Recommender is based on control theory, and it allows to rapidly change the amount of resources of a node in order to meet the service level agreement desired.

Documentation

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