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Extra Objects

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extraObjects​

Render additional Kubernetes objects verbatim.

Rendered by: templates/extras.yaml

This is useful for adding CRDs / custom resources (or any other extra objects) that are not covered by the chart values.

Example 1: Traefik IngressRoute​

extraObjects:
  - apiVersion: traefik.io/v1alpha1
    kind: IngressRoute
    metadata:
      name: my-app
    spec:
      entryPoints:
        - websecure
      routes:
        - match: Host(`my-app.example.com`)
          kind: Rule
          services:
            - name: my-app
              port: 80
      tls:
        secretName: my-app-tls

Example 2: KEDA ScaledObject for Event-Driven Autoscaling​

KEDA allows you to scale workloads based on external metrics.

KEDA with RabbitMQ Queue​

containers:
  - image: myapp/worker
    imageTag: "1.0.0"

extraObjects:
  - apiVersion: keda.sh/v1alpha1
    kind: ScaledObject
    metadata:
      name: rabbitmq-scaledobject
    spec:
      scaleTargetRef:
        name: my-release-name  # Should match your Helm release name
      minReplicaCount: 1
      maxReplicaCount: 10
      triggers:
        - type: rabbitmq
          metadata:
            queueName: my-queue
            mode: QueueLength
            value: "5"
            host: amqp://guest:password@rabbitmq.default.svc.cluster.local:5672/

KEDA with Cron Schedule​

containers:
  - image: myapp/batch-processor
    imageTag: "1.0.0"

extraObjects:
  - apiVersion: keda.sh/v1alpha1
    kind: ScaledObject
    metadata:
      name: cron-scaledobject
    spec:
      scaleTargetRef:
        name: my-release-name
      minReplicaCount: 0
      maxReplicaCount: 5
      triggers:
        - type: cron
          metadata:
            timezone: America/New_York
            start: 0 8 * * *      # Scale up at 8 AM
            end: 0 18 * * *        # Scale down at 6 PM
            desiredReplicas: "5"
info

To use KEDA, install it first: helm install keda kedacore/keda --namespace keda --create-namespace