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.
Note
If you usekubectlover the network, you need to consider authentication and authorization for the API server.
kubectl
is the only command for Kubernetes clusters, and it controls the Kubernetes cluster manager...