Add logging message for disabled snippets during upgrades.

[strongjz]

Add an error or warning in creating an ingress object when controller.allowSnippetAnnotations: false and the ingress object contains snippets.

When upgrading ingress, the admission controller is already run for objects deployed, so the admission controller can not check for snippets again. Logs in the controller should warn users about older objects with snippets enabled and controller.allowSnippetAnnotations: false

/kind bugfix

[k8s-ci-robot]

@strongjz: The label(s) kind/bugfix cannot be applied, because the repository doesn't have them.

In response to this:

Add an error or warning in creating an ingress object when controller.allowSnippetAnnotations: false and the ingress object contains snippets.

When upgrading ingress, the admission controller is already run for objects deployed, so the admission controller can not check for snippets again. Logs in the controller should warn users about older objects with snippets enabled and controller.allowSnippetAnnotations: false

/kind bugfix

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[k8s-ci-robot]

This issue is currently awaiting triage.

If Ingress contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[strongjz]

Something similar was asked for but not followed up #7893

[github-actions]

This is stale, but we won't close it automatically, just bare in mind the maintainers may be busy with other tasks and will reach your issue ASAP. If you have any question or request to prioritize this, please reach #ingress-nginx-dev on Kubernetes Slack.