AI BriefingHow Kubernetes Works Under the Hood: A Developer Who Only Used It Finally Digs In (Part 1)
Key point
The Kubernetes control plane operates the system through the Hub and Spoke pattern and a declarative approach, centered on the API Server.
Details
The core of Kubernetes, the Control Plane, manages all data and has two key characteristics: the Hub and Spoke pattern and the declarative approach.
The Hub and Spoke pattern is a structure in which all components communicate only through the central hub, the API Server. Each component (Spoke), such as the Controller Manager, Scheduler, and Kubelet, does not talk directly to one another and must always go through the API Server. This ensures data consistency and system scalability.
The declarative approach is a method in which the user defines the Desired State, and Kubernetes detects this in real time and maintains the actual state accordingly. This operates efficiently through the Watch mechanism, allowing users to quickly achieve the desired state while reducing management burden.
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