Trigger Specification

This specification describes the external trigger for an external scaler.

triggers:
- type: external
  metadata:
    scalerAddress: external-scaler-service:8080
    caCert : /path/to/tls/ca.pem
    tlsCertFile: /path/to/tls/cert.pem # Deprecated. https://github.com/kedacore/keda/issues/4549
    tlsClientCert: /path/to/tls/cert.pem
    tlsClientKey: /path/to/tls/key.pem
    unsafeSsl: false

Parameter list:

• scalerAddress - Address of the external scaler. Format must be host:port.
• caCert - Location of a Certificate Authority (CA) certificate to use for the GRPC connection to authenticate with. (Optional)
• tlsClientCert - Location of a client certificate to use for the GRPC connection to authenticate with. (Optional)
• tlsClientKey - Location of a client private key to use for the GRPC connection to authenticate with. (Optional)
• unsafeSsl - Skip certificate validation when connecting over HTTPS. (Values: true, false, Default: false, Optional)

For implementing an external scaler, refer to External Scalers Concept.

Authentication Parameters

Not supported yet.

Example

apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: redis-scaledobject
  namespace: keda-redis-test
spec:
  scaleTargetRef:
    name: keda-redis-node
  triggers:
  - type: external
    metadata:
      scalerAddress: redis-external-scaler-service:8080
      address: REDIS_HOST
      password: REDIS_PASSWORD
      listName: mylist
      listLength: "5"