Kubernetes Operators

Purpose

Build Kubernetes operators and custom controllers using Kubebuilder, Operator SDK, or raw controller-runtime to automate application management on Kubernetes. Covers CRD design, reconciliation loops, finalizers, webhooks, testing, and deployment.

Agent Protocol

Trigger

Exact user phrases: "Kubernetes operator", "operator", "custom controller", "Kubebuilder", "Operator SDK", "CRD", "Custom Resource Definition", "reconciliation loop", "reconcile", "controller-runtime", "finalizer", "admission webhook", "conversion webhook", "multi-version CRD", "envtest", "OLM", "Operator Lifecycle Manager", "operator pattern".

Input Context

• Go programming experience level
• Kubernetes version targeted
• Operation to automate (backup, deploy, configure, clean up)
• Existing CRD structures (if any)
• Testing framework preference
• Deployment strategy (OLM, Helm, raw manifests)