[英]Kuberentes HPA change polling interval
I use Horizontal Pod Autoscaler with External
metric based on a value provided by DataDog agent我根据 DataDog 代理提供的值将 Horizontal Pod Autoscaler 与
External
指标一起使用
apiVersion: datadoghq.com/v1alpha1
kind: DatadogMetric
metadata:
name: queue-size
spec:
query: "max:redis.key.length{key:my-tasks}.fill(zero)"
Corresponding HPA configuration对应的 HPA 配置
apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: celery-worker
metrics:
- type: External
external:
metric:
name: "datadogmetric@default:queue-size"
I want workers to be scaled almost immediately as queue grows, so need polling period to be at most 2-5
seconds.我希望随着队列的增长几乎立即扩展工作人员,因此需要轮询周期最多为
2-5
秒。 By default it's 30 seconds ( as per docs )默认情况下是 30 秒( 根据文档)
How do I change poll interval on k8s side?如何更改 k8s 端的轮询间隔? Is there a flag when configuring HPA or should I tune DataDog agent instead?
配置 HPA 时是否有标志,或者我应该调整 DataDog 代理吗?
Kubernetes implements horizontal pod autoscaling as a control loop that runs intermittently (it is not a continuous process). Kubernetes 将 pod 水平自动缩放实现为间歇运行的控制循环(它不是连续过程)。 The interval is set by the --horizontal-pod-autoscaler-sync-period parameter to the kube-controller-manager (and the default interval is 15 seconds).
间隔由kube-controller-manager的--horizontal-pod-autoscaler-sync-period参数设置(默认间隔为 15 秒)。 You should tweak the value as per your requirement
您应该根据您的要求调整值
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