kube-hpa-scale-to-zero

Simulate the HPAScaleToZero feature gate, especially for managed Kubernetes clusters, as they don't usually support non-stable feature gates.

kube-hpa-scale-to-zero scales down to zero workloads instrumented by HPA when the current value of the used custom metric is zero and resuscitates them when needed.

If you're also tired of (big) Pods (thus Nodes) that are only used 3 hours a day, give this a try ;)

Check the code and comments in main.py for more details.

Run

python main.py --hpa-label-selector foo=bar,bar=foo --hpa-namespace foo

or

python main.py --help

Needs Python >=3.10

Deploy

Docker images are published here.

A Helm chart is also available here.

helm upgrade --install RELEASE_NAME helm-chart/ -n RELEASE_NAMESPACE