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How to Enable Kubectl Bash Completion

How to Enable Kubectl Bash Completion

Kubectl is a command-line tool that is used to interact with Kubernetes clusters. It enables users to manage applications that run on Kubernetes. Bash completion is a feature that allows the shell to automatically complete commands, options, and arguments. Enabling kubectl bash completion can save you a lot of time and effort when working with Kubernetes clusters. In this article, we will discuss how to enable kubectl bash completion in a step-by-step manner.

Table of Contents

  1. Checking kubectl Version

  2. Installing Bash Completion

  3. Configuring Bash Completion

  4. Verifying Bash Completion

  5. More Examples

Checking kubectl Version:

Before we proceed, we need to check the version of kubectl installed on our system. Open a terminal and type the following command:
kubectl version --client

This will display the version of kubectl installed on your system.

Installing Bash Completion:

If you are using a Linux distribution that supports apt, you can install bash completion using the following command:
sudo apt-get install bash-completion

If you are using a Linux distribution that supports yum, you can install bash completion using the following command:

sudo yum install bash-completion

If you are using macOS, you can install bash completion using Homebrew:

brew install bash-completion

Configuring Bash Completion:

Once you have installed bash completion, you need to configure it to work with kubectl. Open your terminal and run the following command to edit the bashrc file:
nano ~/.bashrc

Add the following lines to the end of the file:

source <(kubectl completion bash)
alias k=kubectl
complete -F __start_kubectl k

Save the file and exit the editor.

Verifying Bash Completion:

To verify that bash completion is working, open a new terminal and type the following command:
k run [TAB]

This will display a list of available options for the kubectl run command.

More Examples:

Here are some more examples of how to use bash completion with kubectl:
  • k get [TAB]: This will display a list of available Kubernetes resources.
  • k get pods [TAB]: This will display a list of available pods.
  • k logs [TAB]: This will display a list of available pods to view their logs.
  • k delete [TAB]: This will display a list of available resources that can be deleted.

By following these steps, you can enable kubectl bash completion and save time and effort when working with Kubernetes clusters.

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  • That's it for this post. Keep practicing and have fun. Leave your comments if any.

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