Kubernetes Mutating Webhook: Patch a Kubernetes Pod on the fly - the hard way

6 min read

To be able to modify a request to the Kubernetes API server prior to persist the object (to, for example, inject a sidecar) we can use a Mutating Webhook. The admission controller makes a requests using all the MutatingWebhookConfiguration objects that matches the request and processes them in serial:

apiVersion: admissionregistration.k8s.io/v1
kind: MutatingWebhookConfiguration
(...)

Let's take a look on how to configure a mutating webhook from scratch

12/08/2021