Skip to content

Horizontal Pod Autoscaling

Install the Kubernetes Metrics Server

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml

kubectl get deployment metrics-server -n kube-system

AWS Documentation

Using HPA

autoscaling/v2

hpa.yaml
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: nginx
  namespace: nginx
  labels:
    app: nginx
spec:
  minReplicas: 2
  maxReplicas: 10
  metrics:
    - type: Resource
      resource:
        name: cpu
        target:
          type: Utilization
          averageUtilization: 40
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: nginx

autoscaling/v1

hpa.yaml
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
  name: nginx
  namespace: nginx
  labels:
    app: nginx
spec:
  minReplicas: 2
  maxReplicas: 10
  targetCPUUtilizationPercentage: 40
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: nginx

AWS Documentation

Blog