Problem on exposing multiple canaries on the same external domain

fluxcd / flagger

Progressive delivery Kubernetes operator (Canary, A/B Testing and Blue/Green deployments)

Apache License 2.0

4.92k stars 737 forks source link

Bro, I'd like to use the same external domain for both frontend and backend app and also want to enable a/b testing feature for both apps, I followed the instructions per https://docs.flagger.app/faq#istio-ingress-gateway ,however, when I added same match conditions in the analysis section for both apps, the api request which should go to the backend went to frontend instead, please advise, thanks.

example yaml:

apiVersion: flagger.app/v1beta1 kind: Canary metadata: name: website spec: service: port: 8080 gateways:

public-gateway.istio-system.svc.cluster.local hosts:
my-site.com match:
- uri: prefix: / analysis: interval: 1m iterations: 12 threshold: 2 match:
- headers: user-agent: regex: ".Firefox." metrics:
name: request-success-rate thresholdRange: min: 99 interval: 1m webhooks:
- name: load-test url: http://flagger-loadtester.test/ timeout: 15s metadata: cmd: "hey -z 1m -q 1 -c 1 -H 'user-agent: Firefox' http://website-canary/"
  
  apiVersion: flagger.app/v1beta1 kind: Canary metadata: name: webapi spec: service: port: 8080 gateways:
public-gateway.istio-system.svc.cluster.local hosts:
my-site.com match:
- uri: prefix: /api analysis: interval: 1m iterations: 12 threshold: 2 match:
- headers: user-agent: regex: ".Firefox." metrics:
name: request-success-rate thresholdRange: min: 99 interval: 1m webhooks:
- name: load-test url: http://flagger-loadtester.test/ timeout: 15s metadata: cmd: "hey -z 1m -q 1 -c 1 -H 'user-agent: Firefox' http://webapi-canary/"

Hello Any update for this issue? I got a similar problem to expose 2 canaries on one ingress resource. My situation: 1) 2 services deployed in two pods, for example, frontend backend 2) 1 ingress resource to expose these two service by virtual path, /fronted ---> frontend-svc /backend ---> backed-svc 3) enable canary release for both frontend and backend, but use one ingress and different svc

issue: During canary analysis {"level":"info","ts":"2023-02-14T08:48:48.246Z","caller":"controller/events.go:45","msg":"ingress xxxx update error Operation cannot be fulfilled on ingresses.networking.k8s.io \"xxx-canary\": the object has been modified; please apply your changes to the latest version and try again","canary":"xxx"}

No analysis --- keep update the ingress resource {"level":"info","ts":"2023-02-14T08:52:46.231Z","caller":"router/ingress.go:118","msg":"Ingress javaweb-alpha-canary updated","canary":"javaweb-alpha-int.cicd-test"} {"level":"info","ts":"2023-02-14T08:52:56.210Z","caller":"router/ingress.go:118","msg":"Ingress javaweb-alpha-canary updated","canary":"javaweb-beta-int.cicd-test"} {"level":"info","ts":"2023-02-14T08:53:06.222Z","caller":"router/ingress.go:118","msg":"Ingress javaweb-alpha-canary updated","canary":"javaweb-alpha-int.cicd-test"} {"level":"info","ts":"2023-02-14T08:53:16.243Z","caller":"router/ingress.go:118","msg":"Ingress javaweb-alpha-canary updated","canary":"javaweb-beta-int.cicd-test"} {"level":"info","ts":"2023-02-14T08:53:26.200Z","caller":"router/ingress.go:118","msg":"Ingress javaweb-alpha-canary updated","canary":"javaweb-alpha-int.cicd-test"

version: k8s 1.22.11 flux 0.25.11(source) flagger 1.26.0

@stefanprodan Any suggestion for this issue? or we can't use canary by this scenario, thanks a lot！

fluxcd / flagger

Problem on exposing multiple canaries on the same external domain #967

name: load-test url: http://flagger-loadtester.test/ timeout: 15s metadata: cmd: "hey -z 1m -q 1 -c 1 -H 'user-agent: Firefox' http://website-canary/"