Bug 1815005

Summary:	Explain the CPU units mentioned in node requirements
Product:	[Red Hat Storage] Red Hat OpenShift Container Storage	Reporter:	Afreen <afrahman>
Component:	documentation	Assignee:	Olive Lakra <olakra>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Oded <oviner>
Severity:	low	Docs Contact:
Priority:	low
Version:	4.2	CC:	ebenahar, ocs-bugs
Target Milestone:	---
Target Release:	OCS 4.3.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-16 14:36:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1797537

Description Afreen 2020-03-19 10:04:21 UTC

Description of problem (please be detailed as possible and provide log
snippests):

The docs for Node requirements mention 16 CPU as the requirement but it does not clarify that these CPUs are not actually physical CPUs

Actually Nodes are K8s entity and as per K8s docs, the unit CPU has different mapping for different platforms.[Attached doc link in additional info]


Version of all relevant components (if applicable):


Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?


Is there any workaround available to the best of your knowledge?


Rate from 1 - 5 the complexity of the scenario you performed that caused this
bug (1 - very simple, 5 - very complex)?


Can this issue reproducible?
Yes

Can this issue reproduce from the UI?
n/a

If this is a regression, please provide more details to justify this:


Steps to Reproduce:
1.Go to https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.2/html-single/planning_your_deployment/index#node_requirements


Actual results:
No explanation for CPU unit

Expected results:
Explain CPU unit by adding k8s doc link

Additional info:
K8s docs: https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/#cpu-units

OCS doc: https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.2/html-single/planning_your_deployment/index#node_requirements

Comment 3 Oded 2020-04-02 13:31:06 UTC

Need change OCS doc.

Link to doc:
https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.2/html-single/planning_your_deployment/index#node_requirements

Minimum requirements for each starting node (OSD+MON)

Replace: 16 CPUs ->16 units of CPU (per platform)

Requirements for each additional node (OSD only)

Replace: Replace: 16 CPUs ->16 units of CPU (per platform)