KEDA Autoscaling for selenium grid || FailedGetExternalMetric the HPA was unable to compute the replica count || unable to get external metric prod/s0-seleniumgrid-MicrosoftEdge

[vinuvk11]

kubectl get hpa -n prod
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
keda-hpa-selenium-grid-edge Deployment/browser /1 (avg) 5 50 5 44h

kubectl describe hpa keda-hpa-selenium-grid-edge -n prod

Metrics: ( current / target )
"s0-seleniumgrid-MicrosoftEdge" (target average value): / 1
Min replicas: 5
Max replicas: 50
Deployment pods: 5 current / 0 desired
Conditions:
Type Status Reason Message

---

AbleToScale True SucceededGetScale the HPA controller was able to get the target's current scale
ScalingActive False FailedGetExternalMetric the HPA was unable to compute the replica count: unable to get external metric prod/s0-seleniumgrid-MicrosoftEdge/&LabelSelector{MatchLabels:map[string]string{scaledobject.keda.sh/name: selenium-grid-edge,},MatchExpressions:[]LabelSelectorRequirement{},}: unable to fetch metrics from external metrics API: the server is currently unable to handle the request (get s0-seleniumgrid-MicrosoftEdge.external.metrics.k8s.io)
Events:
Type Reason Age From Message

---

Warning FailedGetExternalMetric 112s (x5094 over 21h) horizontal-pod-autoscaler unable to get external metric prod/s0-seleniumgrid-MicrosoftEdge/&LabelSelector{MatchLabels:map[string]string{scaledobject.keda.sh/name: selenium-grid-edge,},MatchExpressions:[]LabelSelectorRequirement{},}: unable to fetch metrics from external metrics API: the server is currently unable to handle the request (get s0-seleniumgrid-MicrosoftEdge.external.metrics.k8s.io)

Error is unable to auto scale the selenium grid browser sessions

#$ cat keda_selenium.yaml
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
name: selenium-grid-edge
namespace: prod
labels:
deploymentName: browser
spec:
minReplicaCount: 5
maxReplicaCount: 50
pollingInterval: 3
cooldownPeriod: 30
scaleTargetRef:
name: browser
triggers:
- type: selenium-grid
metadata:
url: 'http://selenium-hub.prod:4444/graphql'
browserName: 'MicrosoftEdge'
unsafeSsl: 'true'
sessionBrowserName: 'msedge'
#maxQueuedSessions: '5'

[zroubalik]

I think that everything is correct, it is just old event displayed in HPA, I can see there:

AbleToScale True SucceededGetScale the HPA controller was able to get the target's current scale

[vinuvk11]

thanks for response but my autoscaling is not happening still i cloud feel error in two areas

[vinuvk11]

HPA targets are shown unknown

[vinuvk11]

while describing the HPA "scalingActive is false" and thrwon with error