virtualservice-demoapp.yaml

apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: demoapp
spec:
  hosts:
  - demoapp
  http:
  - name: traffic-mirror
    route:
    - destination:
        host: demoapp
        subset: v10
    mirror:
      host: demoapp
      subset: v11

更新demoapp vs

# kubectl apply -f virtualservice-demoapp.yaml 
virtualservice.networking.istio.io/demoapp configured

访问demoapp

~# while true;do curl app.wgs.com/;sleep 0.5;done
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 8 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 7 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 3 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 7 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 13 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 7 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-kdv4m, ServerIP: 172.20.154.195!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.0 !! ClientIP: 127.0.0.6, ServerName: demoappv10-78b6586d58-hq957, ServerIP: 172.20.44.206!
 - Took 4 milliseconds.

参考文档

https://istio.io/latest/zh/docs/reference/config/networking/virtual-service/#HTTPRoute