Bug 2018276

Summary:	Routes are inaccessible from Infra nodes which holds the ingress VIP
Product:	OpenShift Container Platform	Reporter:	Ashish Sharma <ashsharm>
Component:	Networking	Assignee:	Tim Rozet <trozet>
Networking sub component:	ovn-kubernetes	QA Contact:	Anurag saxena <anusaxen>
Status:	CLOSED DUPLICATE	Docs Contact:
Severity:	urgent
Priority:	urgent	CC:	akaiser, emahoney, openshift-bugs-escalate, pdiak, skanakal, trozet
Version:	4.8
Target Milestone:	---
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Hardware:	other
OS:	Linux
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Last Closed:	2021-11-01 14:14:19 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Comment 10 Tim Rozet 2021-11-01 14:14:19 UTC

It looks like this is the same as https://bugzilla.redhat.com/show_bug.cgi?id=2009873

Basically what happens is ovnkube-node subscribes to netlink for address updates on the host. Once we see these updates, we update our annotation and routes. The node where the VIP lives requires this route to be able to reach the VIP. It looks like after some time the netlink subscription may fail, and ovnkube-node is not re-subscribing. Essentially ovnkube-node stops receiving events. By restarting ovnkube-node it restarts the netlink subscription, so things work until another error is received. The fix will be to check if there are any errors or if the netlink subscription goes down and then resubscribe.

*** This bug has been marked as a duplicate of bug 2009873 ***