Kubernetes Vertical Pod Autoscaler

This YAML manifest defines a VerticalPodAutoscaler (VPA) for a Kubernetes Deployment named nginx-deployment. The Vertical Pod Autoscaler automatically adjusts the CPU and memory resource requests and limits of your pods based on observed usage, helping ensure efficient resource utilization.

Here’s a breakdown of the manifest:

YAML Breakdown:

apiVersion: autoscaling.k8s.io/v1
kind: VerticalPodAutoscaler
metadata:
  name: nginx-vpa  # Name of the VerticalPodAutoscaler
spec:
  targetRef:
    apiVersion: "apps/v1"  # API version of the target resource
    kind: Deployment       # Target resource type (in this case, Deployment)
    name: nginx-deployment # Name of the Deployment that the VPA is controlling
  updatePolicy:
    updateMode: "Auto"     # Automatically update the pod resource requests and limits

Explanation of Key Fields:

apiVersion: autoscaling.k8s.io/v1

• The API version for the VerticalPodAutoscaler resource.

kind: VerticalPodAutoscaler

• The kind of resource being defined here is a VerticalPodAutoscaler.

metadata.name: nginx-vpa

• The name of the VerticalPodAutoscaler resource. In this case, it’s called nginx-vpa.