How to Build a Kubernetes Admission Controller to Block Namespace Deletion

This article walks through building a custom Kubernetes admission controller in Go that blocks namespace deletion, covering theory of mutating and validating webhooks, detailed code examples, Docker image creation, TLS certificate generation, Kubernetes manifests, deployment steps, and verification of the protection in action.

AdmissionWebhookCloudNativeKubernetes

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How to Build a Kubernetes Admission Controller to Block Namespace Deletion

NetEase Media Technology Team

Sep 24, 2021 · Cloud Native

How to Extend Knative with a Custom Admission Webhook for Volume Injection

This article explains how to create a non‑intrusive Kubernetes admission webhook that injects custom volumes and volume mounts into Knative pods, covering the underlying admission control concepts, Go implementation, TLS setup, deployment manifests, and verification steps.

AdmissionWebhookGoKnative

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How to Extend Knative with a Custom Admission Webhook for Volume Injection

Cloud Native Technology Community

Jun 25, 2019 · Cloud Native

Kubernetes 1.15 Release Highlights: API Extensions, Admission Webhooks, CSI Improvements, and Cluster Lifecycle Enhancements

The Kubernetes 1.15 release introduces 25 enhancements—including stable, beta, and alpha features—focused on sustainability, API extensibility, admission webhook improvements, cluster lifecycle stability, CSI storage advances, and deprecations, providing a comprehensive overview of the new capabilities and updates.

APIAdmissionWebhookCRD

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Kubernetes 1.15 Release Highlights: API Extensions, Admission Webhooks, CSI Improvements, and Cluster Lifecycle Enhancements