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Bug 2117255

Summary: Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket"
Product: OpenShift Container Platform Reporter: Yurii Prokulevych <yprokule>
Component: NetworkingAssignee: Jacob Tanenbaum <jtanenba>
Networking sub component: ovn-kubernetes QA Contact: Anurag saxena <anusaxen>
Status: CLOSED ERRATA Docs Contact:
Severity: high    
Priority: high CC: eglottma, grajaiya, jcaamano, manrodri, opayne, rravaiol, tonyg, trozet
Version: 4.10   
Target Milestone: ---   
Target Release: 4.12.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Previously, the logical switch configuration was changed so that each `hostsubnet` value overrode the previous in the ovn database for each logical switch and nodes could not use `br-ext`. With this update, the logical switch configuration does not override the previous in the ovn database. (link:https://bugzilla.redhat.com/show_bug.cgi?id=2117255[*BZ#2117255*]
 Story Points: ---
Clone Of:
: 2139197 (view as bug list) Environment:
Last Closed: 2023-01-17 19:54:37 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: 2139197    

Description Yurii Prokulevych 2022-08-10 12:35:56 UTC 
Description of problem:
-----------------------
On dualstack baremetal IPI cluster next error message is present in ovnkube logs:

oc logs -n openshift-ovn-kubernetes ovnkube-node-rvggh -c ovnkube-node
...

E0810 02:12:46.343460  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:13:16.347603  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:13:46.351108  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:14:16.355047  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:14:46.358950  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
I0810 02:15:13.313945  353971 reflector.go:535] k8s.io/client-go/informers/factory.go:134: Watch close - *v1.Service total 9 items received
E0810 02:15:16.362737  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:15:46.366490  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:16:16.369963  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
I0810 02:16:24.306561  353971 reflector.go:535] k8s.io/client-go/informers/factory.go:134: Watch close - *v1.Endpoints total 560 items received
E0810 02:16:46.373482  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:17:16.377497  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:17:46.380726  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
I0810 02:18:15.325871  353971 reflector.go:535] k8s.io/client-go/informers/factory.go:134: Watch close - *v1.Node total 50 items received
E0810 02:18:16.384732  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
I0810 02:18:38.299738  353971 reflector.go:535] k8s.io/client-go/informers/factory.go:134: Watch close - *v1.Pod total 9 items received
E0810 02:18:46.388162  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1
E0810 02:19:16.391669  353971 node_linux.go:593] Failed to dump flows for flow sync, stderr: "ovs-ofctl: br-ext is not a bridge or a socket\n", error: exit status 1


Version-Release number of selected component (if applicable):
-------------------------------------------------------------
OCP-4.10.26

ovn-2021-21.12.0-58.el8fdp.x86_64
ovn-2021-host-21.12.0-58.el8fdp.x86_64
ovn-2021-central-21.12.0-58.el8fdp.x86_64
ovn-2021-vtep-21.12.0-58.el8fdp.x86_64


How reproducible:
-----------------
so far spotted on 2 different clusters

Steps to Reproduce:
-------------------
1. Deploy dualstack baremetal IPI cluster with OVNKubernetesHybrid network(add next to cluster's config before running cluster install):

  defaultNetwork:
    type: OVNKubernetes
    ovnKubernetesConfig:
      hybridOverlayConfig:
        hybridClusterNetwork: []


Actual results:
---------------
Error message in logs

Expected results:
-----------------
No error message in logs

Additional info:
----------------
Baremetal dualstack setup with 3 masters and 4 workers, bonding configured for baremetal network on masters and workers
Comment 12 errata-xmlrpc 2023-01-17 19:54:37 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 (Moderate: OpenShift Container Platform 4.12.0 bug fix and security 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/RHSA-2022:7399