istio东西流量管理-VirtualService,如何实现A/B测试和流量分割

2023-05-05 10:28:10 浏览数 (1)

如何实现A/B测试和流量分割

代码语言:javascript复制
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: myapp
spec:
  hosts:
  - myapp.example.com
  http:
  - name: "ab-test"
    match:
    - uri:
        exact: /v1
    route:
    - destination:
        host: myapp
        subset: v1
      weight: 90
    - destination:
        host: myapp
        subset: v2
      weight: 10
  - name: "split-traffic"
    match:
    - uri:
        prefix: /v2
    route:
    - destination:
        host: myapp
        subset: v1
      weight: 50
    - destination:
        host: myapp
        subset: v2
      weight: 50

该示例定义了一个名为“myapp”的VirtualService,它包含两个HTTP路由规则。第一个路由规则用于A/B测试,将来自“/v1”的请求路由到目标服务的v1版本(90%的流量)或v2版本(10%的流量)。第二个路由规则用于流量分割,将来自“/v2”的请求路由到目标服务的v1版本(50%的流量)或v2版本(50%的流量)。

这个示例还使用了DestinationRule对象,它定义了目标服务的两个版本“v1”和“v2”,并指定了它们的流量负载平衡设置和故障转移设置。例如,它使用了subset标签来指定版本,并使用trafficPolicy配置来指定负载均衡和故障转移策略:

代码语言:javascript复制
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: myapp
spec:
  host: myapp
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2
  trafficPolicy:
    loadBalancer:
      simple: ROUND_ROBIN
    outlierDetection:
      consecutiveErrors: 5
      interval: 10s
      baseEjectionTime: 30s
      maxEjectionPercent: 50

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