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Which Kubernetes component is responsible for managing the cluster state?etcdkube-apiserverkube-controller-managerkube-scheduler

Question

Which Kubernetes component is responsible for managing the cluster state?etcdkube-apiserverkube-controller-managerkube-scheduler

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Solution

The Kubernetes component responsible for managing the cluster state is etcd.

Here's a brief explanation of the role of each component:

  1. etcd: This is a consistent and highly-available key value store used as Kubernetes' backing store for all cluster data. It manages the cluster state.

  2. kube-apiserver: This component exposes the Kubernetes API. It is the front-end for the Kubernetes control plane.

  3. kube-controller-manager: This component runs controllers, which are the background threads that handle routine tasks in the cluster.

  4. kube-scheduler: This component watches for newly created Pods with no assigned node, and selects a node for them to run on.

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