Bug 1996729

Summary:	[backport-4.8] Creating a network policy in OVN-Kubernetes can be very inefficient.
Product:	OpenShift Container Platform	Reporter:	Casey Callendrello <cdc>
Component:	Networking	Assignee:	Casey Callendrello <cdc>
Networking sub component:	ovn-kubernetes	QA Contact:	Mike Fiedler <mifiedle>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	high	CC:	kholtz, zzhao
Version:	4.8
Target Milestone:	---
Target Release:	4.8.z
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:	2021-09-27 19:53:12 UTC	Type:	---
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:	1968569
Bug Blocks:

Description Casey Callendrello 2021-08-23 14:28:33 UTC

This bug was initially created as a copy of Bug #1968569

I am copying this bug because: 



Description of problem: When creating a network policy in ovn-kubernetes that selects a lot of pods, it is very inefficient.

This is because it executes multiple (1-4) nbdb transactions for each pod selected by the policy.

We can fix this by being smart and bulk-processing pods on policy creation.


How reproducible: Very


Steps to Reproduce:
1. Create 100-200 pods in a cluster
2. Create a policy that selects those pods
3. Watch to see that it takes 10s of seconds for the policy to take effect

Comment 3 Andrew Stoycos 2021-09-22 18:50:38 UTC

*** Bug 1991621 has been marked as a duplicate of this bug. ***

Comment 4 Mike Fiedler 2021-09-24 15:43:18 UTC

Verified on 4.8.13.   Creating deny and allow policies selecting 1500 pods in a namespace by label takes effect almost instantaneously.  < 2 seconds.

Comment 6 errata-xmlrpc 2021-09-27 19:53:12 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (OpenShift Container Platform 4.8.13 bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:3632