Install kubectl On Ubuntu Linux

What is kubectl?

It is the official Kubernetes CLI, and it interacts with your Kubernetes cluster’s API server via its API. It is configured by default using the ~/.kube/config file, which is a YAML file that contains metadata, connection info and authentication tokens or certificates for one or more clusters. Kubectl provides commands to view your configuration and switch between clusters if it contains more than one. You can also point kubectl at a different config file by setting the KUBECONFIG environment variable or passing the –kubeconfig command-line flag.

Below are the simple steps to install,

1.Update the apt package index and install packages needed to use the Kubernetes apt repository:

sudo apt-get update
sudo apt-get install -y ca-certificates curl

2.Download the Google Cloud public signing key:

sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg

3.Add the Kubernetes apt repository:

echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

4.Update apt package index with the new repository and install kubectl:

sudo apt-get update
sudo apt-get install -y kubectl

5. Verify kubectl configuration

kubectl --help