How to Check Kubernetes Version Quickly and Easily

To check the Kubernetes version, use the kubectl version --short command to see client and server versions. Alternatively, use kubeadm version to check the kubeadm tool version.

Syntax

The main command to check Kubernetes version is kubectl version. Adding --short shows a concise output. You can also use kubeadm version to check the kubeadm tool version.

• kubectl version [--short]: Shows client and server Kubernetes versions.
• kubeadm version: Shows kubeadm tool version.

bash

kubectl version --short
kubeadm version

Example

This example shows how to run the commands and the typical output you get. It demonstrates checking both the client and server Kubernetes versions.

bash

kubectl version --short
kubeadm version

Output

Client Version: v1.27.3
Server Version: v1.27.3
kubeadm version: &version.Info{Major:"1", Minor:"27", GitVersion:"v1.27.3", GitCommit:"abcdef123456", GitTreeState:"clean", BuildDate:"2024-06-01T12:00:00Z", GoVersion:"go1.20", Compiler:"gc", Platform:"linux/amd64"}

Common Pitfalls

Sometimes users run kubectl version without proper cluster access, so the server version does not show. Also, using kubectl version without --short gives a verbose output that can be confusing.

Make sure your kubectl is configured to connect to your cluster to see the server version.

bash

kubectl version
# This shows a lot of JSON output which can be hard to read

kubectl version --short
# This shows a clean, easy-to-read version output

Quick Reference

Use these commands to quickly check Kubernetes versions:

• kubectl version --short: Check client and server versions.
• kubeadm version: Check kubeadm tool version.
• Ensure kubectl is configured to access your cluster to see server version.

Key Takeaways

Use kubectl version --short to see concise client and server Kubernetes versions.

Ensure your kubectl is connected to the cluster to get the server version.

Use kubeadm version to check the kubeadm tool version separately.

Avoid using kubectl version without --short for easier reading.

Checking versions helps confirm your Kubernetes setup and troubleshoot compatibility.