What is it?
This is a kubernetes admission controller webhook that would resize pods resources with CPU/Memory metrics from prometheus.
How does it help?
When developers/SREs provision an application in a kubernetes container they mostly use a generic request and limit ranges on them hoping for the best. This admission webhook will allow you to automatically override the resources set and set the current mid-to-long term CPU and Memory usage metrics for the pods.
Pod-resizer uses an opt-in process to override pod resources. This is done by using a custom annotation in the main controller(Deployment/Statefulset/Daemonset).
To enable pod resizing for your controller please add the following annotation in the template spec.
Set app.traderepublic.com/set-resources this annotation key and value to True.
The MIT License (MIT) - see LICENSE.md for more details