What are the differences between a master node and a worker node in a cluster architecture?

In a cluster architecture, the master node and worker node perform different roles:

• Master node is responsible for managing the cluster. It controls the cluster's state, distributes tasks, monitors the status of worker nodes, and schedules application execution. Typically, management components such as the API server, scheduler, and controllers run on the master node.

• Worker node is the node where containers or applications are directly run. Worker nodes receive tasks from the master node and execute them, providing computational resources.

Example from Kubernetes:

• The master node contains kube-apiserver, kube-scheduler, kube-controller-manager.
• The worker node contains kubelet and runs pods with containers.

Thus, the master node manages, and the worker node performs tasks.