Kubernetes Master-Kubernetes Orchestration Tool

Example

Acts as the front-end for Kubernetes. The API server exposes Kubernetes API; the users, management tools, and other components interact with it to manage the Kubernetes cluster.

Scenario

When you run `kubectl` commands, these commands are converted into API calls handled by the API server.

Example

Assigns work, in the form of pods, to nodes. The scheduler determines which node can run a pod and assigns it accordingly.

Scenario

When you deploy a new application, the scheduler decides which node the application's pods will run on, based on resource availability.

Example

Runs controller processes, which are background threads that handle routine tasks. The most common example is the Node Controller, which is responsible for noticing and responding when nodes go down.

Scenario

If a node fails, the Node Controller in the Controller Manager notices and responds by rescheduling the affected pods onto other operational nodes.

Example

A consistent and highly-available key-value store used as Kubernetes' backing store for all cluster data.

Scenario

When a new pod is scheduled, its configuration and state are stored in etcd, ensuring reliable and consistent cluster state management.