Bug 2210554
| Summary: | KubeVirtComponentExceedsRequestedCPU alert not firing | ||
|---|---|---|---|
| Product: | Container Native Virtualization (CNV) | Reporter: | Ohad <orevah> |
| Component: | Metrics | Assignee: | João Vilaça <jvilaca> |
| Status: | CLOSED ERRATA | QA Contact: | Ahmad <ahafe> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 4.13.0 | CC: | jvilaca, kmajcher, stirabos |
| Target Milestone: | --- | ||
| Target Release: | 4.14.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | hco-bundle-registry-container-v4.14.0.rhel9-826 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-11-08 14:05:49 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: | |||
QA: Fixed verified v4.14 Fixed In Version: hco-bundle-registry-container-v4.14.0.rhel9-826 [cloud-user@ocp-psi-executor ~]$ oc exec -n openshift-monitoring prometheus-k8s-0 -c prometheus -- curl -s http://127.0.0.1:9090/api/v1/alerts | jq . | grep "Exceed" [cloud-user@ocp-psi-executor ~]$ [cloud-user@ocp-psi-executor ~]$ oc -n openshift-cnv scale deployment virt-operator --replicas=0 deployment.apps/virt-operator scaled [cloud-user@ocp-psi-executor ~]$ oc -n openshift-cnv patch deployment virt-controller -p '{"spec": {"template": {"spec": {"containers": [{"name": "virt-controller", "resources": {"requests": {"memory": "0Mi"}}}]}}}}' deployment.apps/virt-controller patched (no change) [cloud-user@ocp-psi-executor ~]$ oc exec -n openshift-monitoring prometheus-k8s-0 -c prometheus -- curl -s http://127.0.0.1:9090/api/v1/alerts | jq . | grep "Exceed" "alertname": "KubeVirtComponentExceedsRequestedMemory", "runbook_url": "https://docs.openshift.com/container-platform/4.14/virt/support/virt-runbooks.html#virt-runbook-KubeVirtComponentExceedsRequestedMemory", "alertname": "KubeVirtComponentExceedsRequestedMemory", "runbook_url": "https://docs.openshift.com/container-platform/4.14/virt/support/virt-runbooks.html#virt-runbook-KubeVirtComponentExceedsRequestedMemory", 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 (Important: OpenShift Virtualization 4.14.0 Images security and bug fix 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-2023:6817 |
Description of problem: This alert should not fired, the metric for that doesn't catch when the conditions are met. How reproducible: Reduce the cpu request. Steps to Reproduce: 1.scale down virt-operator oc -n openshift-cnv scale deployment virt-operator --repilicas=0 2.Modify the cpu requested from one of the virt-components: oc -n openshift-cnv patch deployment virt-controller -p '{"spec": {"template": {"spec": {"containers": [{"name": "virt-controller", "resources": {"requests": {"cpu": "2Mi"}}}]}}}}' 3.Run the metric: ((kube_pod_container_resource_requests{container=~"virt-controller|virt-api|virt-handler|virt-operator",namespace="openshift-cnv",resource="cpu"}) - on (pod) group_left (node) node_namespace_pod_container:container_cpu_usage_seconds_total:sum_rate{namespace="openshift-cnv"}) < 0 Actual results: No datapoints found Expected results: The metric should fire the alert. Additional info: scale up again the virt-operator for reconciliation. There is a similar alert just for the memory : KubeVirtComponentExceedsRequestedMemory, this alert is fired and works when reducing the memory in the same way reducing the cpu for the alert above.