Istio 流量镜像 Mirror 与百分比策略实战

DestinationRule 定义主/影子子集：apiVersion: networking.istio.io/v1beta1

kind: DestinationRule

metadata:

name: api-dr

spec:

host: api.default.svc.cluster.local

subsets:

- name: v1

labels:

version: v1

- name: shadow

labels:

version: shadow

VirtualService 配置镜像与比例：apiVersion: networking.istio.io/v1beta1

kind: VirtualService

metadata:

name: api-vs

spec:

hosts:

- api.default.svc.cluster.local

http:

- route:

- destination:

host: api.default.svc.cluster.local

subset: v1

weight: 100

mirror:

host: api-shadow.default.svc.cluster.local

mirrorPercentage:

value: 20