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) Sat, 13 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle.en https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle.en In an era of cluster sprawl, Cluster API lets you declare Kubernetes clusters themselves as Kubernetes resources and have controllers reconcile them. This deep dive dissects the architecture and core CRD relationships, a CAPD-based local lab, rolling upgrades and ClusterClass, GitOps fleet operations, pivot, and DR — the full cluster lifecycle. Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetescluster-apimulti-clustergitopsinfrastructurelifecycle https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle.ja https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle.ja クラスタ数が爆発的に増える時代、Cluster API は Kubernetes クラスタそのものを Kubernetes リソースとして宣言し、コントローラに reconcile させます。アーキテクチャとコア CRD の関係、CAPD によるローカル実習、ローリングアップグレードと ClusterClass、GitOps によるフリート運用、pivot と DR まで、クラスタライフサイクル全体を深く解剖します。 Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetescluster-apimulti-clustergitopsinfrastructurelifecycle https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle https://www.youngju.dev/blog/kubernetes/2026-06-13-cluster-api-declarative-cluster-lifecycle 클러스터 수가 폭증하는 시대에 Cluster API는 쿠버네티스 클러스터 자체를 쿠버네티스 리소스로 선언하고 컨트롤러가 reconcile하게 만듭니다. 아키텍처와 핵심 CRD 관계, CAPD 기반 로컬 실습, 롤링 업그레이드와 ClusterClass, GitOps 플릿 운영, pivot과 DR까지 클러스터 라이프사이클 전체를 깊이 있게 해부합니다. Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) kubernetescluster-apimulti-clustergitopsinfrastructurelifecycle