| Node role |
|---|
| Master node hosts the Kubernetes Control Plane that controls and manages the whole Kubernetes system |
| Worker nodes run the actual applications from Kubernetes resources |
| Component | Description |
|---|---|
| API Server | Control Plane components and external tools communicate with API Server |
| Scheduler | Scheduler schedules your apps (assigns a worker node to each deployable component of an application) |
| Etcd | Etcd is a reliable distributed data store that persistently stores the cluster configuration |
| Controller Manager | Controller Manager performs cluster-level functions, such as replicating components, keeping track of worker nodes, handling node failures, and so on |
| Kubelet | Kubelet talks to the API server and manages containers on its node |
| kube-proxy | kube-proxy which load-balances network traffic between application components |
| CRI | CRI (container runtime, Docker for ex.) runs your containers |