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