Cert-Manager Webhook on Ubuntu 24.04

Cert-Manager Webhook is a core component of :contentReference[oaicite:0]{index=0}, responsible for validating and mutating Kubernetes resources such as Certificates, Issuers, and ClusterIssuers. It ensures that certificate requests and configurations comply with expected schemas and security rules before being accepted by the Kubernetes API server.

The webhook plays a critical role in automated certificate lifecycle management by preventing invalid configurations and enabling safe admission control. It works alongside the cert-manager controller and CA injector to deliver reliable, secure, and scalable TLS certificate provisioning within Kubernetes clusters.

Features of Cert-Manager Webhook:

• Validates certificate-related Kubernetes resources before creation or updates.
• Ensures secure and compliant TLS certificate configurations.
• Integrates seamlessly with cert-manager controllers and CA injector.
• Supports ACME, CA, Vault, and self-signed issuers.
• Enhances cluster security through admission control policies.
• Designed for high availability in production Kubernetes environments.

To verify Cert-Manager Webhook installation and status, use the following steps:

 Check cert-manager pods: $ kubectl get pods -n cert-manager Verify webhook deployment: $ kubectl get deployment cert-manager-webhook -n cert-manager Check webhook image version: $ kubectl describe pod -n cert-manager \ | grep cert-manager-webhook 

Disclaimer: Cert-Manager Webhook is provided as part of the open-source cert-manager project. Users are responsible for properly configuring issuers, certificate policies, RBAC permissions, and Kubernetes security settings. It is recommended to follow Kubernetes and cert-manager best practices for production-grade certificate management, monitoring, and upgrades.