k3s on Ubuntu 24.04 LTS

Azure Application Infrastructure

k3s, a certified Kubernetes distribution packaged as a single binary, running a complete single node cluster the moment it boots.

Base

Hardened build

minimal ports, security patches applied at build time

Access

Unique credentials

generated on first boot, readable only by root

Verified

Boots working

services pass a health gate before release

Support

24/7, 365 days

by email and live chat, 24 hour response SLA

Overview

k3s is a fully conformant, CNCF certified Kubernetes distribution packaged as one self contained binary. It bundles the entire control plane together with the container runtime, cluster networking, in cluster DNS, a metrics pipeline, a local storage provisioner and a service load balancer, so a complete working cluster starts from a single service rather than a stack of separately installed components. Standard kubectl, standard manifests and standard Helm charts all work unchanged, because it is real Kubernetes rather than a lookalike.

It suits teams who want a genuine Kubernetes cluster without the operational weight of a multi node control plane: development and continuous integration clusters, edge and branch deployments, single tenant application hosting, and learning or evaluating Kubernetes on infrastructure you fully own.

Why the cloudimg image

An exposed Kubernetes API server is total cluster compromise, so cloudimg treats the cluster boundary as the headline feature. No cluster credential of any kind ships inside the image: the cluster certificate authority, every client and serving certificate, the service account signing key, the node join token and the kubeconfig are all destroyed before capture and generated fresh on each machine's first boot, and the build refuses to produce an image if any of them survive. The API server is never opened to the network by default, only the secure shell port is, and the guide sets out exactly how to reach the cluster over a tunnel or open the API deliberately to your own address range. Every component that does not need to face the network is bound to loopback, and the default public ingress controller is removed so nothing unexpected listens. The cluster image set is bundled and verified on the image, so the first boot needs no registry access at all, and each release is pinned and checksum verified against the upstream project. The base is fully patched with unattended security upgrades enabled, and every deployment is paired with a step by step deploy guide and backed by 24/7 cloudimg support.

Common uses

A complete single node Kubernetes cluster for development and continuous integration
Edge and branch Kubernetes on modest hardware footprints
Running standard Kubernetes manifests and Helm charts in your own cloud account

Overview

Why the cloudimg image

Common uses

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