NATS Streaming Click here for latest

Scale applications based on NATS Streaming.

Availability: v1.0+ Maintainer: Community

Warning

You are currently viewing v"1.5" of the documentation and it is not the latest. For the most recent documentation, kindly click here.

Trigger Specification

This specification describes the stan trigger for NATS Streaming.

triggers:
- type: stan
  metadata:
    natsServerMonitoringEndpoint: "stan-nats-ss.stan.svc.cluster.local:8222" # Location of the Nats Streaming monitoring endpoint
    queueGroup: "grp1" # Queue group name of the subscribers
    durableName: "ImDurable" # Must identify the durability name used by the subscribers
    subject: "Test" # Name of channel
    lagThreshold: "10" # Configures the TargetAverageValue on the Horizontal Pod Autoscaler (HPA)).

Authentication Parameters

Not supported yet.

Example

apiVersion: keda.k8s.io/v1alpha1
kind: ScaledObject
metadata:
  name: stan-scaledobject
  namespace: gonuts
spec:
  pollingInterval: 10   # Optional. Default: 30 seconds
  cooldownPeriod: 30   # Optional. Default: 300 seconds
  minReplicaCount: 0   # Optional. Default: 0
  maxReplicaCount: 30  # Optional. Default: 100
  scaleTargetRef:
    deploymentName: gonuts-sub
  triggers:
  - type: stan
    metadata:
      natsServerMonitoringEndpoint: "stan-nats-ss.stan.svc.cluster.local:8222"
      queueGroup: "grp1"
      durableName: "ImDurable"
      subject: "Test"
      lagThreshold: "10"