Uploaded image for project: 'OpenShift Bugs'
  1. OpenShift Bugs
  2. OCPBUGS-56392

br-ex interface missing after reboot of the worker node| 4.16 agent based installation

XMLWordPrintable

    • Quality / Stability / Reliability
    • False
    • Hide

      None

      Show
      None
    • None
    • Important
    • None
    • None
    • None
    • None
    • None
    • None
    • None
    • None
    • None
    • None
    • None
    • None

      Description of problem:

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

      How reproducible:

      Steps to Reproduce:

      1. Baremetal deployment with 3 master nodes (VMs) and 2 worker nodes (baremetal machines) of OpenShift Container Platform (OCP) 4.16 using agent-based installation

      2. After installation is complete Reboot one of the worker nodes,
      3. During boot, the node displayed configure-ovs failure messages and continued retrying every 15 minutes.

      Actual results:
      After the restart, the br-ex configuration was missing on the node

      Expected results:
      The system should come up with the correct network configuration i.e. with bond0 attached to br-ex.

      Additional info:

      • It'a an agent based installation of OCP-4.16 cluster on baremetal platform
      • The issue has been reproduced multiple times by customer, everytime its missing br-ex interface after reboot of the worker node.
      • From the output of /etc/NetworkManager/system-connections/ from the node we can see some of the configuration files named `slave-ovs-clone` this name is not being used in any of the configurations used during installation.

      Please fill in the following template while reporting a bug and provide as much relevant information as possible. Doing so will give us the best chance to find a prompt resolution.

      Affected Platforms:

      Is it an

      1. internal CI failure
      2. customer issue / SD
      3. internal RedHat testing failure

      If it is an internal RedHat testing failure:

      • Please share a kubeconfig or creds to a live cluster for the assignee to debug/troubleshoot along with reproducer steps (specially if it's a telco use case like ICNI, secondary bridges or BM+kubevirt).

      If it is a CI failure:

      • Did it happen in different CI lanes? If so please provide links to multiple failures with the same error instance
      • Did it happen in both sdn and ovn jobs? If so please provide links to multiple failures with the same error instance
      • Did it happen in other platforms (e.g. aws, azure, gcp, baremetal etc) ? If so please provide links to multiple failures with the same error instance
      • When did the failure start happening? Please provide the UTC timestamp of the networking outage window from a sample failure run
      • If it's a connectivity issue,
      • What is the srcNode, srcIP and srcNamespace and srcPodName?
      • What is the dstNode, dstIP and dstNamespace and dstPodName?
      • What is the traffic path? (examples: pod2pod? pod2external?, pod2svc? pod2Node? etc)

      If it is a customer / SD issue:

      • Provide enough information in the bug description that Engineering doesn't need to read the entire case history.
      • Don't presume that Engineering has access to Salesforce.
      • Do presume that Engineering will access attachments through supportshell.
      • Describe what each relevant attachment is intended to demonstrate (failed pods, log errors, OVS issues, etc).
      • Referring to the attached must-gather, sosreport or other attachment, please provide the following details:
        • If the issue is in a customer namespace then provide a namespace inspect.
        • If it is a connectivity issue:
          • What is the srcNode, srcNamespace, srcPodName and srcPodIP?
          • What is the dstNode, dstNamespace, dstPodName and dstPodIP?
          • What is the traffic path? (examples: pod2pod? pod2external?, pod2svc? pod2Node? etc)
          • Please provide the UTC timestamp networking outage window from must-gather
          • Please provide tcpdump pcaps taken during the outage filtered based on the above provided src/dst IPs
        • If it is not a connectivity issue:
          • Describe the steps taken so far to analyze the logs from networking components (cluster-network-operator, OVNK, SDN, openvswitch, ovs-configure etc) and the actual component where the issue was seen based on the attached must-gather. Please attach snippets of relevant logs around the window when problem has happened if any.
      • When showing the results from commands, include the entire command in the output.  
      • For OCPBUGS in which the issue has been identified, label with "sbr-triaged"
      • For OCPBUGS in which the issue has not been identified and needs Engineering help for root cause, label with "sbr-untriaged"
      • Do not set the priority, that is owned by Engineering and will be set when the bug is evaluated
      • Note: bugs that do not meet these minimum standards will be closed with label "SDN-Jira-template"
      • For guidance on using this template please see
        OCPBUGS Template Training for Networking  components

              bnemec@redhat.com Benjamin Nemec
              rhn-support-nkashyap Nirupma Nirupma
              None
              None
              Ross Brattain Ross Brattain
              None
              Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

                Created:
                Updated: