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我正在使用Istio 1.1.6Prometheus 2.18.1Seldon 1.1.0(用于机器学习);当 Prometheus 尝试抓取端点时,我们对 Istio ConfigMap 进行了以下设置:

outboundTrafficPolicy:
  mode: ALLOW_ANY

根据文档,这应该允许 Prometheus 抓取任何没有关联服务的端点(通过 VirtualServices)。但是,我一直收到以下警报,爆破访问日志:

2020-05-27 12:56:43 
[2020-05-27T16:56:42.448Z] "- - -" 0 - "-" 247 0 0 - "-" "-" "-" "-" "10.51.105.4:6001" PassthroughCluster 10.51.105.4:35708 10.51.105.4:6001 10.51.106.2:51760 -
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2020-05-27 12:56:43 
[2020-05-27T16:56:42.448Z] "- - -" 0 UO "-" 0 0 0 - "-" "-" "-" "-" "-" - - 10.51.105.4:6001 10.51.105.4:35708 -

现在,当我 bash-exec 进入 pod 内的容器时,目的地localhost:6001是可访问的,并且已格式化以供 Prometheus 抓取。

此外,DestinationRule没有短路限制:

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  generation: 1
  name: destination-pod
  ownerReferences:
  - apiVersion: machinelearning.seldon.io/v1
    blockOwnerDeletion: true
    controller: true
    kind: SeldonDeployment
    name: destination
spec:
  host: destination-pod
  subsets:
  - labels:
      version: 41949a6
    name: pod

Istio 似乎阻止了这一点的原因可能是什么?

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