Setting up K8s Local Cluster

Utilizing Docker Containers for k8s cluster creation

k3d uses the k3s docker image to setup the cluster, so this will run a docker container to setup the kubernetes node, which is not recommended for the production use.

• Install k3d
• Create Cluster

Clear execution steps and output are updated in the gist.

Setting up K8s Local Cluster

Install k3d

I am using mac, here is what I did brew install k3d, follow the official docs for instalaltion of k3d other environments

Create Cluster

Single node cluster

• Create k3d cluster create mycluster and k3d cluster list
• Validate nodes kubectl get nodes
• Delete Cluster k3d cluster delete mycluster

Multi Node cluster

• Create k3d cluster create mycluster --agents 2 --servers 1 and k3d cluster list
• Validate nodes kubectl get nodes
• Delete Cluster k3d cluster delete mycluster

Multi Node cluster with Config

Create the cluster config file k3d-cluster.yml

apiVersion: k3d.io/v1alpha4
kind: Simple
metadata:
  name: dev
servers: 1
agents: 2
image: docker.io/rancher/k3s:v1.30.3-k3s1
ports:
- port: 30000-30100:30000-30100
  nodeFilters:
  - server:*
registries:
  create:
    name: dev
    host: 0.0.0.0
    hostPort: "5000"
options:
  k3s:
    extraArgs:
    - arg: --disable=traefik
      nodeFilters:
      - server:*

• Create k3d cluster create --config k3d-cluster.yml and k3d cluster list
• Validate nodes kubectl get nodes
• Delete Cluster k3d cluster delete mycluster

We now able to execute the k3d commands and setup the cluster, use it for the k8s local cluster practice.