Question

我正在尝试为启用istio的服务启用速率限制。但这是行不通的。如果我的配置正确，我该如何调试？

apiVersion: config.istio.io/v1alpha2
kind: memquota
metadata:
  name: handler
  namespace: istio-system
spec:
  quotas:
  - name: requestcount.quota.istio-system
    maxAmount: 5
    validDuration: 1s
    overrides:
    - dimensions:
        engine: myEngineValue
      maxAmount: 5
      validDuration: 1s
---
apiVersion: config.istio.io/v1alpha2
kind: quota
metadata:
  name: requestcount
  namespace: istio-system
spec:
  dimensions:
    source: request.headers["x-forwarded-for"] | "unknown"
    destination: destination.labels["app"] | destination.service | "unknown"
    destinationVersion: destination.labels["version"] | "unknown"
    engine: destination.labels["engine"] | "unknown"
---
apiVersion: config.istio.io/v1alpha2
kind: QuotaSpec
metadata:
  name: request-count
  namespace: istio-system
spec:
  rules:
  - quotas:
    - charge: 1
      quota: requestcount
---
apiVersion: config.istio.io/v1alpha2
kind: QuotaSpecBinding
metadata:
  name: request-count
  namespace: istio-system
spec:
  quotaSpecs:
  - name: request-count
    namespace: istio-system
  services:
  # - service: '*' ; I tried with this as well
  - name: my-service
    namespace: default
---
apiVersion: config.istio.io/v1alpha2
kind: rule
metadata:
  name: quota
  namespace: istio-system
spec:
  actions:
  - handler: handler.memquota
    instances:
    - requestcount.quota

我在- service: '*'中也尝试过QuotaSpecBinding；但没有运气。

如何确认我的配置是否正确？ my-service是用于我的部署的kubernetes服务。（是否必须是istio的VirtualService才能使速率限制起作用？编辑：是的，必须！）

除了VirtualService部分，我关注了this doc。

我在命名空间中的某个地方感觉到我做错了。

Answer 1

您必须为服务my-service定义虚拟服务：

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: myservice
spec:
  hosts:
  - myservice
  http:
  - route:
    - destination:
        host: myservice

这样，您可以让Istio知道您要托管的服务。

在调试方面，我知道有一个名为Kiali的项目，旨在利用Istio环境中的可观察性。我知道他们已经对某些Istio和Kubernetes对象进行了验证：Istio configuration browse。

如何在istio中调试QuotaSpecBinding的速率限制？

1 个答案: