kube-cert-manager is a Kubernetes add-on designed to automate TLS certificate issuance and renewal inside a Kubernetes cluster using Let’s Encrypt via ACME or other certificate authorities. It extends Kubernetes with custom resources (e.g., Certificate) that allow you to declare certificate requests inside the cluster, and the controller handles issuance, renewal, and secret management for you. The tool is built to show how you can write Kubernetes controllers, use third-party resources, and...