kube-webhook-wrapper

The kube-webhook-wrapper is a wrapper you can use with your kubebuilder generated project. It is able to register webhooks automatically in an existing Kubernetes cluster.

Ideally, this project will be used along with a k3d or kind environment, so you can run your controller in the host, while webhooks are registered against the containerized Kubernetes cluster in an automatic fashion, for development only. In this mode, the wrapper will take care of:

• Generate a certificate authority and server certificate
• Register the webhook endpoint in the local HTTP server exposed by Kubeuilder (this is done by Kubebuilder by default as well)
• Register webhooks in the API server, so AdmissionRequests will flow from the containerized API server to the controller running in the host (using the defined Host and Port in ctrl.Options).

The development mode is opt-in, and if it's not enabled explicitly, the behavior of kube-webhook-wrapper will be the same as the original code generated by kubebuilder.