Kubernetes 101 : REST APIs, the API-server and the kubernetes resources

Kubernetes objects are grouped under different API sets.

The are used for interacting with the API-server which is the entry point to the kubernetes cluster.

For example, to check the version of the API-server, we use the below command:

To list the pods in our cluster, we use the below command:

Kubernetes group API based on their function in the kubernetes cluster.

Below we can see examples of API groups:

For the kubernets "intrinsic" functions, we use the following APIs: "/api" and "/apis".

The "/api" represents what is called the core group. It holds all the main functionalities of the kubernetes cluster :

The "/apis" represent what is called the named group. It consists of categories that are given a clear name to differentiate them, for example:

Within each one of these categories we could find our kubernetes objects like - networkingpolicies, deployments, statefulsets - :

Each object, for example "deployment" has a set of "verbs" associated with it - get, update, create, ... -

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