Vertical Pod Autoscaler.md

Vertical Pod Autoscaler (VPA)

Vertical Pod Autoscaler

• 컨테이너에 할당하는 CPU / 메모리 리소스의 할당을 자동으로 스케일링 해주는 오브젝트
• 서비스 적용 전 Pod resource request에 어떤 값이 적정한지 명확하지 않을 때 유용
• VPA > HPA > CA 순으로 스케일링 동작

YAML 구조

• VPA

  apiVersion: autoscaling.k8s.io/v1beta2
  kind: VerticalPodAutoscaler
  metadata:
      name: nginx-vpa
      namespace: vpa
  spec:
      targetRef:
          apiVersion: "apps/v1"
          kind: Deployment
          name: nginx
      updatePolicy:
          updateMode: "Auto"
      resourcePolicy:
          containerPolicies:
          - containerName: "nginx"
              minAllowed:
                  cpu: "250m"
                  memory: "100Mi"
              maxAllowed:
                  cpu: "500m"
                  memory: "600Mi"

• Deployment

  apiVersion: apps/v1
  kind: Deployment
  ...
  spec:
      template:
          metadata:
              name: myapp-deploy
          spec:
              containers:
              - name: nginx
                  image: nginx
                  resources:
                      requests:
                          cpu: "180m"
                          memory: "1Gi"
                      limits:
                          cpu: "600m"
                          memory: "100Mi"
      replicas: 3
      selector:
          matchLabels:
              type: front-end