Kubernetes is made up of the following components:

• Kubernetes master
• Kubernetes nodes
• etcd
• Kubernetes network

These components are connected via a network, as shown in the following diagram:

The preceding diagram can be summarized as follows:

• Kubernetes master: It connects to etcd via HTTP or HTTPS to store the data
• Kubernetes nodes: It connect to the Kubernetes master via HTTP or HTTPS to get a command and report the status
• Kubernetes network: It L2, L3 or overlay make a connection of their container applications