The KEDA Documentation
KEDA Concepts
Operate
Scalers
Authentication Providers

External Click here for latest

Scale applications based on an external scaler.

Availability: v1.0+ Maintainer: Microsoft
Scaler code

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Trigger Specification

This specification describes the external trigger for an external scaler.

triggers:
- type: external
  metadata:
    scalerAddress: external-scaler-service:8080
    tlsCertFile : /path/to/tls/cert.pem

Parameter list:

  • scalerAddress - Address of the external scaler. Format must be host:port.
  • tlsCertFile - Location of a certificate to use for the GRPC connection to authenticate with. (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"