Istio DestinationRule 在 headers 之前给出上游连接错误或 disconnect/reset

Question

我尝试在部署在 Google Cloud Kubernetes 集群上的 2 个应用程序之间获取一些基本路由，并且我有这个配置：

apiVersion: v1
kind: Service
metadata:
  name: kubeapp
  labels:
    app: kubeapp
spec:
  ports:
  - port: 8080
    name: http
  selector:
    app: kubeapp
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kubeapp-v1
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: kubeapp
        version: kubeapp-v1
    spec:
      containers:
      - name: kubeapp-v1
        image: .......
        ports:
        - name: kubeapp-v1
          containerPort: 8080
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kubeapp-v2
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: kubeapp
        version: kubeapp-v2
    spec:
      containers:
      - name: kubeapp-v2
        image: .......
        ports:
        - name: kubeapp-v2
          containerPort: 8080
---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: kubeapp-gateway
spec:
  selector:
    istio: ingressgateway # use istio default controller
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: kubeapp
spec:
  hosts:
  - "*"
  gateways:
  - kubeapp-gateway
  http:
  - route:
    - destination:
        host: kubeapp
        port: 8080

效果很好，流量达到 50/50，但是当我尝试为 lb 添加一些基本规则时，例如：

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: kubeapp
spec:
  hosts:
  - "*"
  gateways:
  - kubeapp-gateway
  http:
  - route:
    - destination:
        host: kubeapp
        port:
          number: 8080
        subset: kubeapp-v1
      weight: 90
    - destination:
        host: kubeapp
        port:
          number: 8080
        subset: kubeapp-v2
      weight: 10
---
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: kubeapp
spec:
  host: kubeapp
  subsets:
  - name: kubeapp-v1
    labels:
      version: kubeapp-v1
  - name: kubeapp-v2
    labels:
      version: kubeapp-v2

我得到了upstream connect error or disconnect/reset before headers

我尝试在所有 3 种模式下安装 Istio 并将其部署到不同的集群节点大小（我看到 Istio 有时在某些特定的集群大小上有一些错误）但没有成功。

Answer 1

此类问题的一个非常常见的原因是您的 DestinationRule 导致了 mTLS 冲突。该问题记录在案 here。

Istio DestinationRule 在 headers 之前给出上游连接错误或 disconnect/reset

Istio DestinationRule gives upstream connect error or disconnect/reset before headers

kubernetes

google-kubernetes-engine

istio