Can I use standard Ingress specification without any route rules?

Simple ingress specifications, with host, TLS, and exact path based matches will work out of the box without the need for route rules. However, note that the path used in the ingress resource should not have any . characters.

For example, the following ingress resource matches requests for the example.com host, with /helloworld as the URL.

{{< text bash >}} $ kubectl create -f - <<EOF apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: simple-ingress annotations: kubernetes.io/ingress.class: istio spec: rules:

• host: example.com http: paths:
  • path: /helloworld pathType: Prefix backend: service: name: myservice port: number: 8000 EOF {{< /text >}}

However, the following rules will not work because they use regular expressions in the path and ingress.kubernetes.io annotations:

{{< text bash >}} $ kubectl create -f - <<EOF apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: this-will-not-work annotations: kubernetes.io/ingress.class: istio # Ingress annotations other than ingress class will not be honored ingress.kubernetes.io/rewrite-target: / spec: rules:

• host: example.com http: paths:
  • path: /hello(.*?)world/ pathType: Prefix backend: service: name: myservice port: number: 8000 EOF {{< /text >}}