error inspecting ActiveMQ queue size: invalid character '<' looking for beginning of value

[andretapxure]

Hi! I have keda with activemq 6.1.2. My configuration file is bellow. When I try to deploy the keda sacaledobject, I have error on logs like
2024-08-12T15:01:49Z ERROR scale_handler error getting scale decision {"scaledObject.Namespace": "qa-rj", "scaledObject.Name": "dfe-engines-processamento-scaledobject", "scaler": "activeMQScaler", "error": "error inspecting ActiveMQ queue size: invalid character '<' looking for beginning of value"}

My Keda configuration

apiVersion: v1
kind: Secret
metadata:
  name: activemq-secret
  namespace: qa-rj
type: Opaque
data:
  activemq-password: ACTIVEMQ_PASSWORD
  activemq-username: ACTIVEMQ_USERNAME
---
apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
  name: trigger-auth-activemq
  namespace: qa-rj
spec:
  secretTargetRef:
  - parameter: username
    name: activemq-secret
    key: activemq-username
  - parameter: password
    name: activemq-secret
    key: activemq-password
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: dfe-engines-processamento-scaledobject
  namespace: qa-rj
spec:
  scaleTargetRef:
    name: dfe-engines-processamento 
  pollingInterval: 5
  cooldownPeriod: 60
  minReplicaCount: 1
  maxReplicaCount: 18
  fallback:
    failureThreshold: 3
    replicas: 1
  advanced:
    restoreToOriginalReplicaCount: true
    horizontalPodAutoscalerConfig:
      name: keda-hpa-dfe-engines-processamento
      behavior:
        scaleDown:
          stabilizationWindowSeconds: 10
          policies:
            - type: Percent
              value: 100
              periodSeconds: 15
            - type: Percent
              value: 50
              periodSeconds: 60
  triggers:
  - type: activemq
    metadata:
      managementEndpoint: "10.0.3.39:8160"
      destinationName: "tapxure_queue"
      brokerName: "localhost"
      targetQueueSize: "50"
    authenticationRef:
      name: trigger-auth-activemq

[rickbrouwer]

The error you’re encountering, invalid character '<' looking for beginning of value, indicates that the HTTP response from the ActiveMQ management endpoint might be returning an HTML page (like an error page) which starts with an HTML tag like <.

When i check this page and the Keda docs i see a different port. Check that you’re using the correct port for the ActiveMQ API. The standard port is 8161, not 8160.

Please check this and please check if the auth params are correct.