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Bug
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Resolution: Unresolved
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Major
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CNV v4.19.0
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Quality / Stability / Reliability
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0.42
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False
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False
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CNV v4.20.0.rhel9-146
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CNV I/U Operators Sprint 276
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Customer Reported
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None
Description of problem:
NodeNetworkInterfaceDown alert fires for disabled NICs
Version-Release number of selected component (if applicable):
4.18
How reproducible:
Every time
Steps to Reproduce:
1. Disable NIC 2. See alerts firing
Actual results:
Alert fires when any unused NIC is disabled
Expected results:
Alert may want to target the default OVN iface and/or veths?
Additional info:
Internal slack thread: https://redhat-internal.slack.com/archives/C017V3R4M08/p1743716777926719
Alert still firing for disabled interfaces:
I'm still seeing this on my local cluster with CNV 4.18.11
sh-5.1# ip link show | grep -i down 5: eno3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000 6: eno4: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000 7: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 10: br-int: <BROADCAST,MULTICAST> mtu 1400 qdisc noop state DOWN mode DEFAULT group default qlen 1000
⬢ [fmhirtz@toolbx TrueNasDemocraticCsiConfig]$ oc rsh -n openshift-monitoring alertmanager-main-0 \ amtool alert query --alertmanager.url http://localhost:9093 Alertname Starts At Summary State Watchdog 2025-08-12 14:24:40 UTC An alert that should always be firing to certify that Alertmanager is working properly. active PrometheusRemoteWriteBehind 2025-08-12 14:25:45 UTC Prometheus remote write is behind. active NodeNetworkInterfaceDown 2025-08-12 14:30:07 UTC Network interfaces are down active NodeNetworkInterfaceDown 2025-08-12 14:30:07 UTC Network interfaces are down active LowVirtControllersCount 2025-08-12 14:35:48 UTC More than one virt-controller should be ready if more than one worker node. active LowVirtAPICount 2025-08-12 15:25:48 UTC More than one virt-api should be running if more than one worker nodes exist. active
Previous PRs:
https://github.com/kubevirt/hyperconverged-cluster-operator/pull/3482
- clones
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CNV-67512 NodeNetworkInterfaceDown alert fires for disabled NICs
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- Verified
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- is cloned by
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CNV-68865 [4.19] NodeNetworkInterfaceDown alert fires for disabled NICs
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- Verified
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- links to
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RHEA-2025:150257 OpenShift Virtualization 4.20.0 Images