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K3s

As explained in Distributed Machine Learning Patterns

A lightweight Kubernetes distribution designed for resource-constrained or streamlined environments.

K3s is a lightweight, minimal Kubernetes distribution suited to streamlined local clusters. The k3d wrapper runs K3s in Docker and supports single-node or multinode development clusters. section 8.2.1

A practical K3s workflow uses familiar Kubernetes tools:

  • Create a cluster with k3d, inspect its nodes with kubectl, and confirm that the node is Ready. section 8.2.1
  • Create an isolated namespace, then switch contexts and namespaces with kubectx and kubens. section 8.2.1
  • Deploy a Pod from YAML, check its status and logs, and inspect its raw Kubernetes configuration. section 8.2.1
Listing 8.21 Creating a local Kubernetes cluster
> k3d cluster create distml --image rancher/k3s:v1.25.3-rc3-k3s1

Use the cluster-creation command as a compact starting point for a Docker-backed K3s environment. section 8.2.1

How Distributed Machine Learning Patterns covers it

How deep it goes
Explains local cluster creation, node inspection, namespace setup, and basic Pod operations, stopping short of deeper K3s internals.
Examples
Uses a distml cluster, a basics namespace, a whalesay Pod, node listings, logs, and raw Pod YAML.
What it assumes
Assumes familiarity with Docker-backed command-line workflows and Kubernetes concepts such as clusters, namespaces, Pods, and contexts.
What you can do after
Operate a local K3s cluster through k3d and kubectl, then deploy, inspect, and troubleshoot a basic Pod.
How it connects
Connects K3s with Kubernetes, Docker, k3d, kubectl, namespaces, Pods, and context-navigation tools.

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Distributed Machine Learning Patterns. The section links point to the parts of the book it draws on.