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Cluster AutoScaler

Updated May 26, 2022 ·

Overview​

The Cluster AutoScaler automatically adjusts the number of nodes in a node group based on demand.

  • Not AWS-specific; applies to all Kubernetes environments.
  • Scales based on resource availability or usage.
  • Can scale out if nodes are under-utilized.
  • Supports both on-demand and spot instances.
  • Ensures similar RAM and CPU across nodes.

For stateful workloads:

  • Use a node group in a single availability zone (AZ).
  • EBS volumes cannot be shared across AZs.

For stateless workloads:

  • Use a node group across multiple availability zones (AZs).

For more information, visit the Github repository.