Service weights for ingress objects

Traefik Traefik v2
1

I am using traefik 1.7 and I would like to migrate to traefik 2.x. On my ingress objects I use:

annotations:
  traefik.ingress.kubernetes.io/service-weights: |
    app-prod: 30%
    app-preprod: 70%

I understand that in traefik 2.x I should use TraefikService for this. However, this only works with IngressRoute but I am stuck with Ingress objects. Is there any way to have service weights for Ingress objects and if not, are there any plans to implement such a feature?

2

Hello @paltryeffort

You are right, there is no such annotation available in v2. However, you can use TraefikService and use a weighted load balancer between Kubernetes services. One of my old examples of how to do that you can find here:

Would you please share why Ingress is mandatory - please also note that you can use both: Kubernetes Ingress and Kubernetes IngressRoute with CRD.

Thank you,

3

Hi @jakubhajek ,

Let's say I have defined TraefikService as webapp-v1 weight: 1, webapp-v2 weight: 0,
May I know how it behaves when webapp-v1 down, will it still route the traefik to webapp-v2.

I am using latest traefik v2.10 TraefikProxy. I tried with 1,0 bit its not flipping to second service automatically.

The reason why I am asking in cluster we implemented failover capability from one cluster to another cluster using traefik.ingress.kubernetes.io/service-weights which worked well with k8s ingress annotation.

annotations:
traefik.ingress.kubernetes.io/service-weights: |
app-prod: 100%
failover: 0%