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2025-11-30 08:18:56 +08:00

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YAML

# example_hpa.yaml
# This is an example Kubernetes Horizontal Pod Autoscaler (HPA) configuration file.
# It defines how the number of pods in a deployment or replication controller
# should be automatically scaled based on observed CPU utilization.
apiVersion: autoscaling/v2 # Use autoscaling/v2 for more features (e.g., resource metrics)
kind: HorizontalPodAutoscaler
metadata:
name: example-hpa # The name of the HPA resource
namespace: default # The namespace where the HPA should be deployed (REPLACE_ME if needed)
spec:
scaleTargetRef: # Defines the target resource to scale
apiVersion: apps/v1 # API version of the target resource
kind: Deployment # The type of resource to scale (e.g., Deployment, ReplicationController)
name: example-deployment # The name of the Deployment to scale (REPLACE_ME)
minReplicas: 2 # The minimum number of replicas to maintain
maxReplicas: 10 # The maximum number of replicas to scale to
metrics: # Defines the metrics used to trigger scaling
- type: Resource # Scale based on resource utilization
resource:
name: cpu # The resource to monitor (CPU in this case)
target:
type: Utilization # Target utilization percentage
averageUtilization: 70 # Target CPU utilization percentage (e.g., 70%)
- type: Resource # Scale based on memory utilization
resource:
name: memory # The resource to monitor (Memory in this case)
target:
type: Utilization # Target utilization percentage
averageUtilization: 80 # Target Memory utilization percentage (e.g., 80%)
behavior: # Optional: Define scaling behavior
scaleUp: # Define scale up behavior
stabilizationWindowSeconds: 300 # Delay for scaling up after a scaling event
policies: # Scaling policies (e.g., percentage or fixed number of replicas)
- type: Percent # Scale up by a percentage
value: 20 # Percentage increase
periodSeconds: 60 # Evaluate every 60 seconds
scaleDown: # Define scale down behavior
stabilizationWindowSeconds: 300 # Delay for scaling down after a scaling event
policies: # Scaling policies (e.g., percentage or fixed number of replicas)
- type: Percent # Scale down by a percentage
value: 10 # Percentage decrease
periodSeconds: 60 # Evaluate every 60 seconds