Bug 2124930

Summary:	Descheduler mode needs to be specified
Product:	Container Native Virtualization (CNV)	Reporter:	Sarah Bennert <sbennert>
Component:	Documentation	Assignee:	Sabrina Jess <sjess>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Roni Kishner <rkishner>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.11.0	CC:	apinnick, dholler
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Last Closed:	2023-03-13 20:55:51 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Sarah Bennert 2022-09-07 13:51:16 UTC

Document URL: 

[0] https://github.com/openshift/openshift-docs/blob/98910ac48a471d595114152e41a497a49db52de0/modules/virt-enabling-descheduler-evictions.adoc

[1] https://github.com/openshift/openshift-docs/blob/31bac1ebc3e5395a84b0c345b7db0d5bb363d4e3/modules/nodes-descheduler-configuring-profiles.adoc

Section Number and Name: 
Enabling descheduler evictions on a virtual machine (VM) [0]
Configuring descheduler profiles [1]

Describe the issue: 

As of 4.11, Descheduler added a 'mode' to the spec, which is defaulted to 'Predictive' which does not evict pods. In order for the descheduler to evict, this must be set to 'Automatic'

Suggestions for improvement: 

Additional information:

Comment 2 Avital Pinnick 2022-10-25 13:23:07 UTC

Dominik, can you provide an example of the 4.11 KubeDescheduler manifest?

Comment 3 Sarah Bennert 2022-10-25 14:00:28 UTC

Hi Avital, this is a minimal implementation using a single profile. If used for VMs, profile should be 'DevPreviewLongLifecycle'

apiVersion: operator.openshift.io/v1
kind: KubeDescheduler
metadata:
  name: cluster
  namespace: openshift-kube-descheduler-operator
spec:
  deschedulingIntervalSeconds: 3600
  logLevel: Normal
  managementState: Managed
  operatorLogLevel: Normal
  mode: Automatic
  profiles:
  - AffinityAndTaints