path Types (PathType:) in K8s Ingress

• https://kubernetes.io/docs/concepts/services-networking/ingress/#path-types

pathType: ImplementationSpecific
pathType: Prefix
pathType: Exact

• strict-validate-path-type enabled by default in https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.12.0

https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#strict-validate-path-type

       paths:
         - path: /(.*)
           pathType: ImplementationSpecific

apiVersion: networking.k8s.io/v1
kind: Ingress 
metadata:
  name: test-ingress
  annotations:
    nginx.ingress.kubernetes.io/use-regex: "true"
spec:
  ingressClassName: nginx
  rules:
  - host: test.com
    http:
      paths:
      - path: /foo/.*
        pathType: ImplementationSpecific
        backend:
          service:
            name: test
            port:
              number: 80

Errors

Admission webhook "validate.nginx.ingress.kubernetes.io" denied the request: ingress contains invalid paths: path /?(.*) cannot be used with pathType Prefix

Solution: disable in nginx strict-validate-path-type or change pathType: ImplementationSpecific in every ingress.

Related

• ingress:
• Nginx Ingress Controller
• Ingress Path Matching

See also

• pathType: ImplementationSpecific, Prefix, Exact, strict-validate-path-type, Ingress Path Matching
• ingress:, pathType:
• NGINX Ingress Controller: ConfigMap ingress-nginx, UnAvailableLoadBalancer, UpdatedLoadBalancer, ingress-nginx-controller, ingress-nginx-controller-controller-admission, nginx.org/ingress-controller, k8s.io/ingress-nginx, PathType, values.yaml