Install the kubectl Command Line
In order to start working on a Kubernetes cluster, it is necessary to install the Kubernetes command line (kubectl). Follow these steps to install the kubectl CLI:
Execute the following commands to install the kubectl CLI. OS_DISTRIBUTION is a placeholder for the binary distribution of kubectl, remember to replace it with the corresponding distribution for your Operating System (OS).
$ curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/OS_DISTRIBUTION/amd64/kubectl $ chmod +x ./kubectl $ sudo mv ./kubectl /usr/local/bin/kubectl
TIP: Once the kubectl CLI is installed, you can obtain information about the current version with the kubectl version command.
NOTE: You can also install kubectl by using the sudo apt-get install kubectl command.
Check that kubectl is correctly installed and configured by running the kubectl cluster-info command:
$ kubectl cluster-info
NOTE: The kubectl cluster-info command shows the IP addresses of the Kubernetes node master and its services.
You can also verify the cluster by checking the nodes. Use the following command to list the connected nodes:
$ kubectl get nodes
To get complete information on each node, run the following:
$ kubectl describe node