https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Mon, 15 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status.en https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status.en This post covers the three topics that move a Kubernetes Operator from a demo to production: cleaning up external resources with Finalizers, Validating and Mutating Admission Webhooks, and designing the Status subresource with the standard Conditions pattern. It includes hands-on Go code, common pitfalls, and testing strategies based on controller-runtime v0.24.x and the latest Kubebuilder. Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetesoperatorfinalizerwebhookkubebuilder https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status.ja https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status.ja Kubernetes Operator をデモから本番品質へ引き上げる 3 つの中心テーマ、すなわち Finalizer による外部リソースのクリーンアップ、Validating・Mutating Admission Webhook、そして Status サブリソースと Conditions 標準の設計を解説します。controller-runtime v0.24.x と最新の Kubebuilder を前提に、実践的な Go コード、よくある落とし穴、テスト戦略までまとめます。 Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetesoperatorfinalizerwebhookkubebuilder https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status https://www.youngju.dev/blog/kubernetes/2026-06-15-operator-finalizers-webhooks-status Kubernetes Operator를 프로덕션 수준으로 끌어올리는 세 가지 핵심 주제인 Finalizer를 통한 외부 리소스 정리, Validating·Mutating Admission Webhook, 그리고 Status 서브리소스와 Conditions 표준 설계를 다룹니다. controller-runtime v0.24.x와 Kubebuilder 최신 버전 기준의 실전 Go 코드와 함정, 테스트 전략까지 정리합니다. Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetesoperatorfinalizerwebhookkubebuilder