OpenShift 4 - Cluster Autoscaler Demo

demo-cluster-autoscaler.yml

---
apiVersion: "autoscaling.openshift.io/v1alpha1"
kind: "ClusterAutoscaler"
metadata:
  name: "default"
spec:
  resourceLimits:
    maxNodesTotal: 20
  scaleDown:
    enabled: true
    delayAfterAdd: 10s
    delayAfterDelete: 10s
    delayAfterFailure: 10s

---
apiVersion: "autoscaling.openshift.io/v1alpha1"
kind: "MachineAutoscaler"
metadata:
  name: "default-worker-us-east-2a"
  namespace: "openshift-machine-api"
spec:
  minReplicas: 1
  maxReplicas: 4
  scaleTargetRef:
    apiVersion: "machine.openshift.io/v1beta1"
    kind: "MachineSet"
    name: "ocp4-demo-m8qgl-worker-us-east-2a"
    
---
apiVersion: "autoscaling.openshift.io/v1alpha1"
kind: "MachineAutoscaler"
metadata:
  name: "default-worker-us-east-2b"
  namespace: "openshift-machine-api"
spec:
  minReplicas: 1
  maxReplicas: 4
  scaleTargetRef:
    apiVersion: "machine.openshift.io/v1beta1"
    kind: "MachineSet"
    name: "ocp4-demo-m8qgl-worker-us-east-2b"

---
apiVersion: "autoscaling.openshift.io/v1alpha1"
kind: "MachineAutoscaler"
metadata:
  name: "default-worker-us-east-2c"
  namespace: "openshift-machine-api"
spec:
  minReplicas: 1
  maxReplicas: 4
  scaleTargetRef:
    apiVersion: "machine.openshift.io/v1beta1"
    kind: "MachineSet"
    name: "ocp4-demo-m8qgl-worker-us-east-2c"

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: "demo-loader"
  namespace: "default"
spec:
  replicas: 25
  selector:
    matchLabels:
      app: "demo-loader"
  template:
    metadata:
      labels:
        app: "demo-loader"
    spec:
      containers:
      - name: "helloworld"
        image: "quay.io/dvercill/helloworld:latest"
        ports:
        - containerPort: 8080
        resources:
          requests:
            memory: "1024Mi"
            cpu: "500m"
          limits:
            memory: "1024Mi"
            cpu: "500m"

API vesion has changed
apiVersion: "autoscaling.openshift.io/v1"