2023-03-16
300 秒 偵測每次加減一個 POD
kubectl apply -f - <<EOF
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: metrics-server-v0.5.2
namespace: kube-system
spec:
behavior:
scaleDown:
policies:
- periodSeconds: 300
type: Percent
value: 1
selectPolicy: Min
scaleUp:
policies:
- periodSeconds: 300
type: Percent
value: 1
selectPolicy: Max
stabilizationWindowSeconds: 0
maxReplicas: 30
metrics:
- resource:
name: cpu
target:
averageUtilization: 80
type: Utilization
type: Resource
minReplicas: 1
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: metrics-server-v0.5.2
EOF
kubectl get events -n kube-system
LAST SEEN TYPE REASON OBJECT MESSAGE
16m Normal Pulled pod/metrics-server-v0.5.2-6bf845b67f-lwqtd Container image "gke.gcr.io/metrics-server:v0.5.2-gke.3" already present on machine
16m Normal Created pod/metrics-server-v0.5.2-6bf845b67f-lwqtd Created container metrics-server
16m Normal Started pod/metrics-server-v0.5.2-6bf845b67f-lwqtd Started container metrics-server
42m Normal Pulled pod/metrics-server-v0.5.2-6bf845b67f-t8dg9 Container image "gke.gcr.io/metrics-server:v0.5.2-gke.3" already present on machine
42m Normal Created pod/metrics-server-v0.5.2-6bf845b67f-t8dg9 Created container metrics-server
42m Normal Started pod/metrics-server-v0.5.2-6bf845b67f-t8dg9 Started container metrics-server
kubectl describe hpa metrics-server-v0.5.2 -n kube-system
Name: metrics-server-v0.5.2
Namespace: kube-system
Labels: <none>
Annotations: <none>
CreationTimestamp: Tue, 14 Mar 2023 15:42:22 +0800
Reference: Deployment/metrics-server-v0.5.2
Metrics: ( current / target )
resource cpu on pods (as a percentage of request): 47% (23m) / 80%
Min replicas: 1
Max replicas: 30
Behavior:
Scale Up:
Stabilization Window: 0 seconds
Select Policy: Max
Policies:
- Type: Percent Value: 1 Period: 300 seconds
Scale Down:
Select Policy: Min
Policies:
- Type: Percent Value: 1 Period: 300 seconds
Deployment pods: 2 current / 2 desired
Conditions:
Type Status Reason Message
---- ------ ------ -------
AbleToScale True ReadyForNewScale recommended size matches current size
ScalingActive True ValidMetricFound the HPA was able to successfully calculate a replica count from cpu resource utilization (percentage of request)
ScalingLimited False DesiredWithinRange the desired count is within the acceptable range
Events: <none>