Bug 1761344

Summary:	kuryrnet handler makes kuryr-controller to restart frequently
Product:	OpenShift Container Platform	Reporter:	Luis Tomas Bolivar <ltomasbo>
Component:	Networking	Assignee:	Luis Tomas Bolivar <ltomasbo>
Networking sub component:	kuryr	QA Contact:	Jon Uriarte <juriarte>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	unspecified	CC:	juriarte
Version:	4.2.0	Keywords:	Triaged
Target Milestone:	---
Target Release:	4.3.0
Hardware:	Unspecified
OS:	Unspecified
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Clone Of:
Clones:	1761345 (view as bug list)		Environment:
Last Closed:	2020-01-23 11:07:15 UTC	Type:	Bug
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1761345

Description Luis Tomas Bolivar 2019-10-14 08:31:23 UTC

When enabling kuryrnet handler, the kuryr pools are pre-populated for each newly created namespace. This increases the load on neutron side during spikes of namespaces creation. In turns, that makes the creation of those ports slower, as well as the deletion of namespaces and its associated neutron resources (in this case the ports of their associated pools). And finally, this leads to timeouts on kuryr-controller waiting for the namespace resources to be cleaned up

Comment 2 Jon Uriarte 2019-10-18 08:29:19 UTC

Verified on OCP 4.3.0-0.nightly-2019-10-17-061631 build on top of OSP 13 2019-10-01.1 puddle.

release image: registry.svc.ci.openshift.org/ocp/release@sha256:2cafe25ec1ed2dfdec361cde13b4461d2a30194d0b41fbd1c6d3fad5ab34ca05

kuryrnet handler is not enabled:
$ oc -n openshift-kuryr get cm kuryr-config -o yaml | grep handler
    enabled_handlers = vif,lb,lbaasspec,policy,pod_label,namespace,kuryrnetpolicy

$ oc -n openshift-kuryr get cm kuryr-config -o yaml | grep annotation
    vif_annotation_timeout = 500

$ oc -n openshift-kuryr get deploy kuryr-controller -o yaml | grep failure                                                                                             
          failureThreshold: 10
          failureThreshold: 10

Comment 4 errata-xmlrpc 2020-01-23 11:07:15 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, 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-2020:0062