weather_scaler.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    run: nginx
  name: weather-deploy
spec:
  selector:
    matchLabels:
      run: nginx
  template:
    metadata:
      creationTimestamp: null
      labels:
        run: nginx
    spec:
      containers:
      - image: nginx
        name: nginx
        ports:
        - containerPort: 80
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: weather-scaledobject
  labels:
    deploymentName: weather-deploy
spec:
  minReplicaCount: 1 # Minimum number of replicas KEDA will scale the resource down to. 
  maxReplicaCount: 6 # Holds the maximum number of replicas of the target resouce.
  pollingInterval: 3 # Optional. Default: 30 seconds | will check each trigger source on every ScaledObject every 30 seconds.
  cooldownPeriod:  5 # Optional. Default: 300 seconds|The period to wait after the last trigger reported active before scaling the resource back to 0.
  scaleTargetRef:
    name: weather-deploy        
  triggers:
  - type: weather
    metadata:
      host: https://api.openweathermap.org/data/2.5/weather?q=%s&appid=%s
      cityName: "CITY_NAME"
      apiKey: "YOUR API KEY"
      threshold: "100"
      activationThreshold: "273" # 10º
      preference: "Temp"
      scalerIndex: "42"