No way to configure Ingress Trait with annotations

[xytis]

In many kubernetes deployments, machinery is in place that reacts to Ingress object annotations.

What would be the prefered way to implement passing down these annotations to Ingress Trait object?

Extra: Would it be possible to configure TLS on Ingress Trait object?

[nicolaferraro]

There's currently an easy way to pass labels as:

kamel run ... --label mylabel=avalue -t owner.target-labels=mylabel

The --label flag labels the integration, while the trait owner.target-labels allows to forward them to all sub resources (including the ingress).

Although there's no corresponding --annotation flag (we should add it), if you manually annotate the integration with your annotations, there's a trait option owner.target-annotations to select the annotations to forward to sub resources.

Btw, @xytis can you provide some more references about the way the ingress can be configured via annotations, so we may find a better way to configure it, including TLS support.

[xytis]

In my experience, Ingress objects generally require at least one annotation: kubernetes.io/ingress.class: <ingress-class-name>. Depending on ingress provider, there could be more annotations, that configure the provider. (Examples: Traefik, Nginx, AWS)
Annotations can be complex JSON objects or multiline strings, so passing them through command line is not always viable.

Regarding TLS support, it is a part of current standard Ingress API, but I usually use it in conjunction with certificate manager, which requires even more annotation based configuration.

Overall, for now it seems that the best way to handle these kinds of scenarios would be to create the ingress object externally and use service trait to expose the integration.

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