"error": "error parsing metric API metadata: no username given"

[itsham-sajid]

I've setup the Metrics API KEDA scaler but I'm having issues with getting the basic credentials to work. From the KEDA operator logs I keep getting this error "error": "error parsing metric API metadata: no username given"

So below is the secrets I've created

apiVersion: v1
kind: Secret
metadata:
  name: keda-metric-api-secret
  namespace: default
data:
  username: "NDYxgfdfgd44w"
  password: "Z2xjX2V5SXlJaXdpYmlJNkluUmxjM1F"

---

apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
  name: keda-metric-api-creds
  namespace: default
spec:
  secrets:
    - parameter: username
      name: keda-metric-api-secret
      key: username
    - parameter: password
      name: keda-metric-api-secret
      key: password

This is the trigger:

        {
          type = "metrics-api"
          metadata = {
            url            = "API URL goes here"
            targetValue    = "10000"
            valueLocation  = "data.result[0].value[1]"
            authMode       = "basic"
          }
          authenticationRef = {
            name = "keda-metric-api-creds"
          }
        }

But from the Keda Operator Logs I get this error:

2024-10-11T12:54:39Z	ERROR	scale_handler	error resolving auth params	{"type": "ScaledObject", "namespace": "default", "name": "devscaler", "triggerIndex": 1, "error": "error parsing metric API metadata: no username given"}
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).buildScalers
	/workspace/pkg/scaling/scalers_builder.go:99
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).performGetScalersCache
	/workspace/pkg/scaling/scale_handler.go:357
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).getScalersCacheForScaledObject
	/workspace/pkg/scaling/scale_handler.go:290
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).GetScaledObjectMetrics
	/workspace/pkg/scaling/scale_handler.go:430
github.com/kedacore/keda/v2/pkg/metricsservice.(*GrpcServer).GetMetrics
	/workspace/pkg/metricsservice/server.go:48
github.com/kedacore/keda/v2/pkg/metricsservice/api._MetricsService_GetMetrics_Handler
	/workspace/pkg/metricsservice/api/metrics_grpc.pb.go:99
google.golang.org/grpc.(*Server).processUnaryRPC
	/workspace/vendor/google.golang.org/grpc/server.go:1369
google.golang.org/grpc.(*Server).handleStream
	/workspace/vendor/google.golang.org/grpc/server.go:1780
google.golang.org/grpc.(*Server).serveStreams.func2.1
	/workspace/vendor/google.golang.org/grpc/server.go:1019

The API and credentials have been tested separately and they do work.

[rickbrouwer]

Hello,

In the TriggerAuthentication you use secrets in stead of secretTargetRef.
Here is an correct example:

apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
  name: keda-metric-api-creds
  namespace: default
spec:
  secretTargetRef:
    - parameter: username
      name: keda-metric-api-secret
      key: username
    - parameter: password
      name: keda-metric-api-secret
      key: password