Unused Traefik Service

TraefikService is an abstraction on top of Kubernetes Services to enable advanced routing such as weighted load balancing, mirroring and sticky sessions. This validator detects when a TraefikService is not attached to IngressRoutes. That can be an indication of a typo in the TraefikService name or IngressRoutes reference.

Affected Resources: TraefikService

Examples

apiVersion: traefik.containo.us/v1alpha1
kind: TraefikService
metadata:
    name: weighted              # Different name in IngressRoute
spec:
  weighted:
    services:
    - name: whoamiv1
      port: 80
      weight: 3
    - name: whoamiv2
      weight: 1

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
    name: whoami
spec:
    entryPoints:
    - web
    routes:
    - kind: Rule
      match: Host(`demo.kubevious.io`)
      services:
      - kind: TraefikService
        name: weighted-svc      # TraefikService "weighted" not found
        port: 80

Resolution

Examine IngressRoutes within the namespace and determine if the TraefikService is supposed used in any of them.

If the TraefikService is indeed unused, it may need to be just removed.

Learn More

https://doc.traefik.io/traefik/routing/providers/kubernetes-crd/#kind-ingressroute

https://doc.traefik.io/traefik/routing/services/

https://doc.traefik.io/traefik/routing/providers/kubernetes-crd/#kind-traefikservice

Need other validation rules?

Please let us know if there are other built-in validation rules you would like to see in Kubevious to detect misconfigurations and violations to best practices. Optionally, you can provide your details so we can reach out to you with follow-up questions.

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