Bug 1944587
| Summary: | VPA could not take actions based on the recommendation when min-replicas=1 | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Weinan Liu <weinliu> |
| Component: | Node | Assignee: | Joel Smith <joelsmith> |
| Node sub component: | Autoscaler (HPA, VPA) | QA Contact: | Weinan Liu <weinliu> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | medium | ||
| Priority: | unspecified | CC: | aos-bugs |
| Version: | 4.8 | ||
| Target Milestone: | --- | ||
| Target Release: | 4.8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-07-27 22:56:24 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: | |||
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 4.8.2 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-2021:2438 |
Description of problem: Version-Release number of selected component (if applicable): $ oc get clusterversion NAME VERSION AVAILABLE PROGRESSING SINCE STATUS version 4.8.0-0.nightly-2021-03-26-054333 True False 22h Cluster version is 4.8.0-0.nightly-2021-03-26-054333 How reproducible: Steps to Reproduce: 1. Install VPA on a ocp 4.8 cluster 2. Create a dc with replica=1 oc create -f- <<EOF apiVersion: apps.openshift.io/v1 kind: DeploymentConfig metadata: name: hamster spec: replicas: 1 labels: app: hamster template: metadata: labels: app: hamster spec: containers: - name: hamster image: k8s.gcr.io/ubuntu-slim:0.1 resources: requests: cpu: 100m memory: 50Mi command: ["/bin/sh"] args: - "-c" - "while true; do timeout 0.5s yes >/dev/null; sleep 0.5s; done" EOF 3. Create VPA and wath the scaling oc create -f- <<EOF apiVersion: "autoscaling.k8s.io/v1beta2" kind: VerticalPodAutoscaler metadata: name: hamster-vpa spec: targetRef: apiVersion: "apps.openshift.io/v1" kind: DeploymentConfig name: hamster updatePolicy: updateMode: "Auto" resourcePolicy: containerPolicies: - containerName: '*' minAllowed: cpu: 100m memory: 50Mi maxAllowed: cpu: 1 memory: 500Mi controlledResources: ["cpu", "memory"] EOF Actual results: VPA could not take actions based on the recommendation when min-replicas=1 Expected results: VPA could not take actions based on the recommendation Additional info: $ oc get dc -n hamster NAME REVISION DESIRED CURRENT TRIGGERED BY hamster 1 1 1 config $ paste <(oc get pods -n hamster -o="custom-columns=Name:.metadata.name,Phase:.status.phase,CPU Req:.spec.containers[0].resources.requests.cpu") <(oc get podmetrics -n hamster -o="custom-columns=CPU Used:containers[0].usage.cpu") Name Phase CPU Req CPU Used hamster-1-deploy Succeeded <none> 299m hamster-1-hjdgk Running 100m $ oc get vpa -n hamster hamster-vpa --no-headers -o "custom-columns=:\ > status.recommendation.containerRecommendations[0].target.cpu" 671m $ oc describe vpa -n hamster ... Recommendation: Container Recommendations: Container Name: hamster Lower Bound: Cpu: 509m Memory: 262144k Target: Cpu: 671m Memory: 262144k Uncapped Target: Cpu: 671m Memory: 262144k Upper Bound: Cpu: 1 Memory: 262144k Events: <none> $ oc describe deployment.apps/vpa-admission-plugin-default ... Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable OldReplicaSets: vpa-admission-plugin-default-75ccbdc6fd (1/1 replicas created) NewReplicaSet: <none> Events: <none>