我正在尝试在 kubernetes 环境中为我的 statefulset(for elasticsearch(设置 HPA。我计划使用 CPU 利用率扩展状态集。我从 https://github.com/stefanprodan/k8s-prom-hpa/tree/master/metrics-server 创建了公制服务器。
而我的 HPA yaml 用于有状态集是 folows:
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: dz-es-cluster
spec:
scaleTargetRef:
apiVersion: extensions/v1beta1
kind: StatefulSet
name: dz-es-cluster
minReplicas: 2
maxReplicas: 3
metrics:
- type: Resource
resource:
name: cpu
targetAverageUtilization: 80
但是以 hpa 为单位获得输出,如下所示:
Conditions:
Type Status Reason Message
---- ------ ------ -------
AbleToScale False FailedGetScale the HPA controller was unable to get the target's current scale: the server could not find the requested resource
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedGetScale 1m (x71 over 36m) horizontal-pod-autoscaler the server could not find the requested resource
有人请帮助我..
在 kubernetes 1.9 中添加了对使用 HPA 自动缩放有状态集的支持,因此您的版本不支持它。在 kubernetes 1.9 之后,您可以使用以下方法自动扩展有状态集:
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: YOUR_HPA_NAME
spec:
maxReplicas: 3
minReplicas: 1
scaleTargetRef:
apiVersion: apps/v1
kind: StatefulSet
name: YOUR_STATEFUL_SET_NAME
targetCPUUtilizationPercentage: 80
请参阅以下链接以获取更多信息:
https://github.com/kubernetes/kubernetes/issues/44033