What are the components of Kubernetes master and explain each component’s function?

Kubernetes – Master Machine Components

etcd
It stores the configuration information which can be used by each of the nodes in the cluster.It is accessible only by Kubernetes API server 

API Server

Kubernetes is an API server which provides all the operation on cluster using the API. 

Controller Manager

This component is responsible for most of the collectors that regulates the state of cluster and performs a task and is responsible for collecting and sending information to API server.

Scheduler

This is one of the key components of Kubernetes master. It is a service in master responsible for distributing the workload. It is responsible for tracking utilization of working load on cluster nodes and then placing the workload on which resources are available and accept the workload.