search

kubernetes-sigs / descheduler

Descheduler for Kubernetes
https://sigs.k8s.io/descheduler
Apache License 2.0
4.23k stars 645 forks source link

The descheduler supports limiting the total number of pods evicted per rescheduling cycle #1449

Open zhifei92 opened 3 days ago

zhifei92 commented 3 days ago

Is your feature request related to a problem? Please describe.

Describe the solution you'd like

The descheduler supports limiting the total number of pods evicted per rescheduling cycle. Although there have been a MaxPodsToEvictPerNode and MaxPodsToEvictPerNamespace, but it is not enough

The MaxNoOfPodsToEvictTotal serves to prevent scenarios where an unintended issue, such as a software bug or incorrect usage of Pod Disruption Budgets (PDBs), could result in a substantial number of pods being evicted simultaneously, potentially compromising the availability of services.

Describe alternatives you've considered

What version of descheduler are you using?

descheduler version:

Additional context

zhifei92 commented 3 days ago

If this feature is accepted, I would like to work on it.

/assign

a7i commented 3 days ago

seems reasonable to me.

cc: @damemi and @ingvagabund thoughts?

zhifei92 commented 3 days ago

This feature has already been adopted internally within our company, and many business units consider it a necessity.

I opened a pull request, and if it is not accepted, I will close it.