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Scale applications based on AWS Kinesis Stream.

Availability: v1.1+ Maintainer: Community

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Trigger Specification

This specification describes the aws-kinesis-stream trigger that scales based on the shard count of AWS Kinesis Stream.

triggers:
- type: aws-kinesis-stream
  metadata:
    # Required
    streamName: myKinesisStream
    # Required
    awsRegion: "eu-west-1"
    # Optional: Default: 2
    shardCount: "2"
    identityOwner: pod | operator # Optional. Default: pod

Parameter list:

  • streamName - Name of AWS Kinesis Stream
  • shardCount - The target value that a Kinesis data streams consumer can handle.
  • awsRegion - AWS Region for the Kinesis Stream
  • identityOwner - Receive permissions on the Kinesis Stream via Pod Identity or from the KEDA operator itself (see below).

When identityOwner set to operator - the only requirement is that the Keda operator has the correct IAM permissions on the Kinesis Stream. Additional Authentication Parameters are not required.

Authentication Parameters

These parameters are relevant only when identityOwner is set to pod.

You can use TriggerAuthentication CRD to configure the authenticate by providing either a role ARN or a set of IAM credentials, or use other KEDA supported authentication methods.

Delegate auth with TriggerAuthentication

Role based authentication:

  • awsRoleArn - Amazon Resource Names (ARNs) uniquely identify AWS resource

Credential based authentication:

  • awsAccessKeyID - Id of the user
  • awsSecretAccessKey - Access key for the user to authenticate with

The user will need DescribeStreamSummary IAM permission policy to read data from AWS Kinesis Streams.

Example

apiVersion: v1
kind: Secret
metadata:
  name: test-secrets
  namespace: keda-test
data:
  AWS_ACCESS_KEY_ID: <user-id>
  AWS_SECRET_ACCESS_KEY: <key>
--- 
apiVersion: keda.k8s.io/v1alpha1
kind: TriggerAuthentication
metadata:
  name: keda-trigger-auth-aws-credentials
  namespace: keda-test
spec:
  secretTargetRef:
  - parameter: awsAccessKeyID     # Required.
    name: keda-aws-secrets        # Required.
    key: AWS_ACCESS_KEY_ID        # Required.
  - parameter: awsSecretAccessKey # Required.
    name: keda-aws-secrets        # Required.
    key: AWS_SECRET_ACCESS_KEY    # Required.
---
apiVersion: keda.k8s.io/v1alpha1
kind: ScaledObject
metadata:
  name: aws-kinesis-stream-scaledobject
  namespace: keda-test
  labels:
    test: nginx-deployment
spec:
  scaleTargetRef:
    deploymentName: nginx-deployment
  triggers:
    - type: aws-kinesis-stream
      authenticationRef:
        name: keda-trigger-auth-aws-credential
      metadata:
        # Required
        streamName: myKinesisStream
        # Required
        awsRegion: "eu-west-1"
        # Optional: Default: 2
        shardCount: "2"


Currently available scalers for KEDA