Working with Kubernetes is quite easy, using either a Command Line Interface (CLI) or API (RESTful). This section will describe Kubernetes control by CLI. The CLI we use in this chapter is version 1.10.2.
After you install Kubernetes master, you can run a kubectl command as follows. It shows the kubectl and Kubernetes master versions (both the API Server and CLI are v1.10.2):
$ kubectl version --short
Client Version: v1.10.2
Server Version: v1.10.2
kubectl connects the Kubernetes API server using the RESTful API. By default, it attempts to access the localhost if .kube/config is not configured, otherwise you need to specify the API server address using the --server parameter. Therefore, it is recommended to use kubectl on the API server machine for practice.
If you use kubectl over the network, you need to consider authentication and authorization for...