Kubernetes Concepts

Kubernetes Concepts

• Cluster : A group of machines running Kubernetes
• Master : The system which controls a Kubernetes cluster. You will typically interact with the master when you communicate with a cluster. The master includes an api, scheduler, and management daemon.
• Nodes : The machines in a cluster. These can be virtual, physical, or a combination of both.
• Pods : A deployment of an application. This consists of a container, it’s storage resources, and a unique IP address. Pods are not persistent, and may be brought up and down by the master during scaling.

In order to have a persistent way to communicate with ephemeral pods, a higher-level service abstraction is provided. Additionally, in order to have a persistent way to store data, volumes can be attached to pods.

• Service : An abstraction for communicating with a set of pods

Kubernetes Quiz

Further Research

• General Kubernetes documentation
• Kubernetes volumes documentation